Efficient dye laser amplification technology

Abstract

The invention relates to the technical field of laser amplification, and discloses a high-efficiency dye laser amplification technology, which comprises the following steps of using high repetition frequency ultrafast laser as a pumping source, and carrying out beam expansion and collimation on pumping light through a telescope system; the dye concentration is adjusted in real time through the microfluidic system, and the dye concentration is monitored in real time through the fluorescence detection system; a photonic crystal frequency doubling crystal is used for frequency doubling conversion; pumping light intensity, dye concentration and output power data are collected and subjected to standardization processing; performing data analysis and system parameter optimization through a deep learning model; and the temperature distribution of the laser amplifier is monitored and adjusted in real time by using an intelligent thermal management system. By integrating the high-repetition-frequency ultrafast laser pumping source and the telescope system, uniform beam expansion and collimation of light beams are realized, and the laser amplification efficiency and stability are remarkably improved. Compared with the prior art, the influence of uneven light spots on the amplification effect is effectively reduced, and the quality and consistency of output light beams are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of laser amplification, in particular to a high-efficiency dye laser amplification technology. Background Art

[0002] High-efficiency dye laser amplification technology is an important optical amplification technology, which is widely used in scientific research, medical diagnosis, industrial processing and other fields. Dye laser amplification technology uses organic dyes as gain media and excites dye molecules through external pump light sources to achieve laser amplification. Due to the diverse energy level structures of dye molecules and their wide tunable range, dye lasers can produce tunable laser outputs from ultraviolet to near-infrared, with the advantages of high efficiency, high beam quality and wide spectral tuning range.

[0003] Existing dye laser amplification technology mainly relies on traditional pump light sources and dye box structures. The pump light source usually uses a continuous wave or pulsed laser, and the pump beam is introduced into the dye box through a focusing optical system to excite the dye molecules to produce stimulated radiation. The dye solution in the dye box maintains a stable concentration and temperature through a circulation system to improve the laser amplification efficiency and output power. By precisely controlling the pump light intensity and dye concentration, the existing technology can achieve higher laser amplification gain and output power.

[0004] Although the existing dye laser amplification technology can achieve higher laser amplification gain and output power, it still has some shortcomings. First, the uneven beam quality leads to low amplification efficiency, which affects the stability and consistency of laser output. Secondly, the existing technology does not accurately control the temperature and dye concentration, resulting in unstable system performance and shortening the service life of the equipment. In addition, the traditional thermal management system has high energy consumption and poor cooling effect, making it difficult to effectively control the temperature of the laser amplifier. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a high-efficiency dye laser amplification technology. The present invention significantly improves the beam quality and stability of the dye laser amplification system by introducing a high-repetition-rate ultrafast laser pump source, an intelligent thermal management system, real-time data monitoring and standardized processing, deep learning model optimization and other measures, accurately controls the temperature and dye concentration, reduces energy consumption and maintenance costs, and extends the service life of the equipment.

[0006] To achieve the above objectives, the present invention is implemented by the following technical solutions: A high-efficiency dye laser amplification technology, comprising the following steps:

[0007] Use high repetition rate ultrafast laser as pump source, and expand and collimate the pump light through a telescope system;

[0008] The dye concentration is adjusted in real time by a microfluidic system and monitored in real time by a fluorescence detection system;

[0009] Use photonic crystal frequency doubling crystal for frequency doubling conversion;

[0010] Collect and normalize data on pump light intensity, dye concentration, and output power;

[0011] Data analysis and system parameter optimization through deep learning models;

[0012] An intelligent thermal management system is used to monitor and adjust the temperature distribution of the laser amplifier in real time.

[0013] Preferably, the intensity signal of the pump light is monitored by a photodiode sensor, and the calculation formula is:

[0014]

[0015] Among them, I pump (t) is the intensity of the spring light, V PD (t) is the photodiode output voltage, R PD is the responsivity of the photodiode, A eff is the effective area.

[0016] Preferably, the dye concentration is measured in real time by a microfluidic chip and a fluorescence detection system, and the calculation formula is:

[0017] C dye (t) = k fluor ×I fluor (t)

[0018] Among them, C dye (t) is the dye concentration, k fluor is the fluorescence detection coefficient, I fluor (t) is the fluorescence intensity.

[0019] Preferably, the output power is monitored in real time by a power meter, and the calculation formula is:

[0020]

[0021] Among them, P out (t) is the output power, V PM (t) is the voltage output of the power meter, G PM is the power meter gain, A cal is the calibration factor.

[0022] Preferably, the design and manufacturing steps of the photonic crystal frequency doubling crystal include:

[0023] The plane wave expansion method is used to calculate the photonic crystal band gap structure. The calculation formula is:

[0024]

[0025] Where, ω(k): band gap center frequency, k: wave vector, G: reciprocal lattice vector, ∈: dielectric constant, E: electric field component;

[0026] Adjust the period (Λ) and filling rate (f) of the photonic crystal, and the optimization formula is:

[0027]

[0028] n ef =f·n high +(1-f)·n low

[0029] Where, Λ: photonic crystal period: double frequency wavelength, n eff : effective refractive index, f: filling rate of high refractive index material, n high : refractive index of high refractive index material, n low : The refractive index of the low refractive index material.

[0030] Preferably, the standardization processing step includes data cleaning and standardization:

[0031] During data collection, a timestamp is added to each data point to facilitate time alignment during subsequent processing;

[0032] Use median filter or mean filter to smooth the data and remove sudden noise;

[0033] The specific formula for standardization is:

[0034] X clean (t)=median(X(tn / 2),…,X(t),…,X(t+n / 2))

[0035]

[0036] Among them, X clean (t) is the cleaned data, median is the median filter function, n is the window size, Z is the standardized data, X is the original data, μ is the data mean, and σ is the data standard deviation.

[0037] Preferably, the deep learning model performs data processing and system parameter optimization through convolutional neural networks and recurrent neural networks.

[0038] Preferably, the training of the deep learning model uses a mean square error loss function and a regularization term, and the calculation formula is:

[0039]

[0040] Among them, L is the loss function, θ represents the model parameters, and y i and are the actual and predicted system outputs, respectively, N is the total number of samples, and λ is the regularization coefficient.

[0041] Preferably, the intelligent thermal management system uses thermal imaging technology to monitor temperature distribution in real time and adjusts temperature according to the following formula:

[0042] T next =T current -k·(T current -T ambient )

[0043] Among them, T next is the predicted temperature at the next time point, T current is the current temperature, T ambient is the ambient temperature, k is the adjustment coefficient.

[0044] Preferably, the telescope system is composed of a convex lens and a concave lens to achieve beam expansion and collimation, and the magnification formula is:

[0045]

[0046] Where M is the magnification, f 1 and f 2 are the focal lengths of the concave and convex lenses respectively.

[0047] The present invention provides a high-efficiency dye laser amplification technology. It has the following beneficial effects:

[0048] 1. The present invention integrates a high-repetition-rate ultrafast laser pump source and a telescope system to achieve uniform beam expansion and collimation, significantly improving the efficiency and stability of laser amplification. Compared with the prior art, the present invention effectively reduces the impact of uneven light spots on the amplification effect, ensuring the quality and consistency of the output beam.

[0049] 2. The present invention combines a microfluidic system and a fluorescence detection system to monitor and adjust the dye concentration in real time, and cooperates with an intelligent thermal management system to accurately control the temperature using thermal imaging technology. This technology solves the problem of unstable performance caused by temperature and concentration fluctuations in the prior art, and improves the reliability and life of the system.

[0050] 3. The present invention uses standardized processing and deep learning models to perform data analysis and system optimization to achieve dynamic adjustment of laser system parameters. The mean square error loss function and regularization term are used to ensure the prediction accuracy and stability of the model.

[0051] 4. The present invention achieves efficient frequency doubling conversion by optimizing the design of photonic crystal frequency doubling crystal, using the plane wave expansion method to calculate the band gap structure, and adjusting the period and filling rate of the photonic crystal. This technology enhances the adaptability and flexibility of the system, can meet the laser applications with different wavelengths and power requirements, and expands the application range of laser systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Please see attached Figure 1 The embodiment of the present invention provides a high-efficiency dye laser amplification technology, comprising the following steps:

[0055] Use high repetition rate ultrafast laser as pump source, expand and collimate the pump light through telescope system, select femtosecond laser system as pump source, provide continuous high energy input, suitable for efficient light amplification; use beam shaping device, such as telescope system, to expand and collimate the pump light, so as to optimize the beam quality and improve the uniformity and stability of the incident pump light. Through expansion and collimation, the pump light obtains a larger uniform spot before entering the dye box, reducing the uneven energy distribution caused by uneven pump spot, thereby improving the energy conversion efficiency and the quality of the output laser. The expanded and collimated pump light can excite the dye molecules more evenly, enhance the amplification effect of the dye, and improve the overall efficiency of the laser system and the stability of the output laser.

[0056] The dye concentration is adjusted in real time by the microfluidic system, the dye concentration is monitored in real time by the fluorescence detection system, the flow and concentration of the dye are precisely controlled by the microfluidic chip and the electric valve, and the fluorescence detector is set to monitor the fluorescence intensity of the dye in the dye box to reflect the concentration state of the dye. The dye concentration is monitored and adjusted in real time to ensure that the optical properties of the dye match the laser amplification requirements and optimize the light energy conversion efficiency. The dye concentration is monitored and adjusted in real time to ensure that the optical properties of the dye match the laser amplification requirements and optimize the light energy conversion efficiency. The real-time adjustment of the dye concentration can cope with the dynamic changes in the laser amplification process, maintain the continuity and stability of the laser output, and improve the response speed and adaptability of the system;

[0057] Use photonic crystal frequency doubling crystals for frequency doubling conversion, design and manufacture photonic crystals with a specific periodic structure, which can produce strong local field enhancement at a specific wavelength to improve the frequency doubling efficiency. Pass the adjusted dye laser through the photonic crystal frequency doubling crystal, and use the nonlinear optical properties of the crystal to convert the wavelength of the pump light into the required output wavelength. The photonic crystal generates an optical band gap through its periodic structure, which strengthens the local enhancement effect of the light field at a specific wavelength, making the nonlinear frequency doubling process more efficient, significantly improving the efficiency of frequency doubling conversion, reducing energy loss, and obtaining a higher intensity laser output;

[0058] Collect and standardize data on pump light intensity, dye concentration, and output power. Use sensors and measuring equipment to collect data on pump light intensity, dye concentration, and laser output power in real time. De-noise, standardize, and synchronize the collected data to ensure data quality and provide accurate input for data analysis. This improves the training effect and prediction accuracy of subsequent deep learning models and ensures that laser system tuning is based on accurate real-time data.

[0059] Through the deep learning model, data analysis and system parameter optimization are carried out. The deep learning model can learn the relationship between pump light, dye and output power from complex data, automatically find the optimal parameter combination to improve laser performance, realize the self-optimization of the laser system, significantly improve the stability and efficiency of laser output, and reduce the need and time for manual adjustment;

[0060] The intelligent thermal management system is used to monitor and adjust the temperature distribution of the laser amplifier in real time. Thermal sensors and thermal imagers are installed to monitor the temperature distribution of the laser amplifier. The internal temperature is adjusted in real time through the cooling system. The cooling system is automatically adjusted according to the real-time temperature data to maintain the optimal operating temperature. Through real-time thermal management, performance degradation or damage caused by temperature increase during the laser amplification process is avoided, and the optimal working state of the laser equipment is maintained. The intelligent thermal management system ensures that the laser amplifier operates at the optimal temperature, extends the equipment life, maintains efficient output performance, and avoids equipment failure due to overheating.

[0061] Please see attached Figure 1 In a preferred embodiment of the present invention, the pump light is monitored by a photodiode sensor and its intensity signal is calculated as follows:

[0062]

[0063] Among them, I pump (t) is the pump light intensity, V PD (t) is the photodiode output voltage, R PD is the responsivity of the photodiode, A effFor the effective area, a high-response photodiode suitable for the wavelength of the pump laser is selected. When the pump light is irradiated on the photodiode, the photoelectric effect causes the electrons to be excited and generate current, which is converted into a voltage signal through the circuit. The magnitude of the voltage is proportional to the intensity of the irradiated light. Through the known photodiode responsivity and effective area, the voltage signal can be converted into an accurate light intensity value. By real-time monitoring of the light intensity of the pump light, it can be ensured that the laser amplification system operates under the optimal optical input conditions, thereby improving the efficiency of laser amplification and the quality of the output beam. The light intensity data supports the real-time feedback adjustment of the system. When the pump light intensity changes, the system can automatically adjust the corresponding parameters, such as the dye concentration and the position of the frequency doubling crystal, to maintain the stability of the laser output. Real-time monitoring of the pump light intensity also helps to identify signs of laser performance degradation or failure at an early stage. Preventive maintenance can avoid greater equipment failures and downtime, and reduce maintenance costs.

[0064] Please see attached Figure 1 In a preferred embodiment of the present invention, the dye concentration is measured in real time by a microfluidic chip and a fluorescence detection system, and the calculation formula is:

[0065] C dye (t) = k fluor ×I fluor (t)

[0066] Among them, C dye (t) is the dye concentration, k fluor is the fluorescence detection coefficient, I fluor (t) is the fluorescence intensity. A microfluidic chip is designed to accurately control the flow of the dye solution. The fluorescence detector is installed in the detection area of ​​the microfluidic chip to ensure that the dye solution can be accurately detected when it flows through the detection area. When the pump light excites the dye molecules, the dye molecules emit fluorescence. The fluorescence intensity is proportional to the dye concentration. The dye concentration can be indirectly measured by detecting the fluorescence intensity. The fluorescence detector converts the fluorescence signal into an electrical signal, and the electrical signal is converted into a dye concentration value through a pre-calibrated detection coefficient. Through the fluorescence detection system, high-precision real-time monitoring of the dye concentration can be achieved to ensure that the dye concentration is always in the best amplification state and optimize the laser output. The dye concentration data can be fed back to the control system in real time. When the dye concentration changes, the system can automatically adjust the flow of the microfluidic chip to maintain the stability of the dye concentration. Real-time monitoring and adjustment of the dye concentration can prevent the instability of the laser output caused by the fluctuation of the dye concentration, and ensure the continuity and consistency of the laser output. At the same time, by accurately controlling the amount of dye used, the waste of dye is avoided, the operating cost is reduced, and the pollution to the environment is reduced.

[0067] Please see attached Figure 1In a preferred embodiment of the present invention, the output power is monitored in real time by a power meter, and the calculation formula is:

[0068]

[0069] Among them, P out (t) is the output power, V PM (t) is the voltage output of the power meter, G PM is the power meter gain, A cal For the calibration factor, select a high-precision laser power meter suitable for the laser wavelength and power range. The power meter should be installed at the end of the laser output optical path to measure the power of the output laser in real time. The electrical signal output by the power meter is connected to the data acquisition system to record and process the output power data in real time. The power meter converts the laser power into an electrical signal through photoelectric conversion, and the size of the electrical signal is proportional to the laser power. Through the known calibration factor, the electrical signal can be converted into the actual output power value, and the laser output power can be monitored in real time to ensure that the output power is always within the preset range, thereby improving the stability and reliability of the system. The output power data can be used for feedback control of the system. When the output power fluctuates, the system can automatically adjust the pump light intensity and dye concentration to maintain stable laser output.

[0070] Please see attached Figure 1 In a preferred embodiment of the present invention, the design and manufacturing steps of the photonic crystal frequency doubling crystal include:

[0071] The plane wave expansion method is used to calculate the photonic crystal band gap structure. The calculation formula is:

[0072]

[0073] Among them, ω(k): band gap center frequency, k: wave vector, G: reciprocal lattice vector, ∈: dielectric constant, E: electric field component. This method is used to calculate the band gap structure of photonic crystals composed of materials with periodic dielectric constant distribution. The plane wave expansion method calculates the propagation characteristics of electromagnetic waves in periodic media by expanding the Bloch-Floquet wave function of the electromagnetic field into a plane wave basis set. The calculated band gap can clearly indicate the area where light wave propagation is prohibited in certain frequency ranges, which is crucial for designing structures with specific optical effects.

[0074] Adjust the period (Λ) and filling rate (f) of the photonic crystal, and the optimization formula is:

[0075]

[0076] Where, Λ: photonic crystal period, λ: double frequency wavelength, n eff : effective refractive index, f: filling rate of high refractive index material, n high: refractive index of high refractive index material, n low :The refractive index of the low-refractive-index material, according to the bandgap calculation results, adjust the period and filling rate of the photonic crystal to achieve the desired frequency doubling effect. The period determines the scale of the crystal structure, and the filling rate affects the ratio of high and low refractive index materials in the crystal, which in turn affects the effective refractive index of the entire structure. By accurately calculating and designing the bandgap structure of the photonic crystal, the local enhancement of light waves of a specific wavelength in the crystal can be achieved, thereby effectively improving the frequency doubling conversion efficiency. This allows low-energy pump light to be effectively converted into high-energy output light, enhancing the application range and flexibility of the laser system. The optimized photonic crystal not only improves the frequency doubling efficiency, but also improves the performance and reliability of the entire laser system by reducing light loss and improving light stability.

[0077] Please see attached Figure 1 In a preferred embodiment of the present invention, the standardization processing step includes data cleaning and standardization:

[0078] During the data collection process, a timestamp is added to each data point to facilitate time alignment during subsequent processing. The purpose of adding a timestamp is to ensure that all data points can be accurately matched during subsequent processing and analysis, thereby ensuring the consistency and accuracy of data processing. Accurate timestamps ensure that data from different sources can be seamlessly integrated, improve the accuracy and reliability of data analysis, and reduce data errors caused by time misalignment.

[0079] Use median filter or mean filter to smooth data and remove sudden noise. Use median filter or mean filter to smooth data and remove sudden noise. Median filter has good suppression effect on sudden noise and is suitable for data processing containing spike noise. Data cleaning effectively removes sudden noise and high-frequency noise in the data, improves the smoothness and continuity of the data, and provides higher quality data input for subsequent standardization and analysis.

[0080] The specific formula for standardization is:

[0081] X clean (t)=median(X(tn / 2),…,X(t),…,X(t+n / 2))

[0082]

[0083] Among them, X clean(t) is the cleaned data, median is the median filter function, n is the window size, Z is the standardized data, X is the original data, μ is the data mean, σ is the data standard deviation. The standardization process adjusts the data to a standard normal distribution with zero mean and unit standard deviation by subtracting the mean and dividing by the standard deviation, eliminating the dimensional differences between the data. The standardized data has a unified scale, which improves the comparability between different data and provides more consistent and reliable data input for the training and data analysis of deep learning models.

[0084] Please see attached Figure 1 In a preferred embodiment of the present invention, the deep learning model performs data processing and system parameter optimization through convolutional neural networks and recurrent neural networks. The combination of convolutional neural networks and recurrent neural networks can simultaneously process multidimensional data and time series data in the laser system, realize comprehensive data analysis and system optimization, and improve the overall performance and stability of the laser system.

[0085] Please see attached Figure 1 In a preferred embodiment of the present invention, the training of the deep learning model uses a mean square error loss function and a regularization term, and the calculation formula is:

[0086]

[0087] Among them, L is the loss function, θ represents the model parameters, and y i and are the actual and predicted system outputs respectively, N is the total number of samples, λ is the regularization coefficient, and the mean square error loss function guides the update of model parameters by minimizing the square difference between the predicted value and the actual value, so that the predicted value is as close to the actual value as possible. The regularization term prevents the model from overfitting the training data and improves the generalization ability of the model by penalizing the model parameters. The use of the mean square error loss function and the regularization term can effectively guide model training, balance the fitting ability and generalization ability of the model, avoid overfitting, and improve the prediction accuracy and stability of the model.

[0088] Please see attached Figure 1 In a preferred embodiment of the present invention, the intelligent thermal management system uses thermal imaging technology to monitor temperature distribution in real time and adjusts the temperature according to the following formula:

[0089] T next =T current -k·(T current -T ambient )

[0090] Among them, T next is the predicted temperature at the next time point, T current is the current temperature, T ambientis the ambient temperature, k is the adjustment coefficient, and a high-resolution, high-precision thermal imaging camera is selected to capture the temperature distribution inside the laser amplifier in real time. The thermal imaging camera is calibrated to ensure that the temperature it measures is accurate. The thermal imaging camera collects temperature data inside the laser amplifier in real time and generates a thermal image, and transmits the thermal image data to the data processing system through the data interface for subsequent analysis and processing. Thermal imaging technology uses the principle of infrared radiation to convert the temperature distribution on the surface of an object into a visual thermal image, which can accurately and real-time reflect the temperature changes inside the laser amplifier. Real-time monitoring of temperature distribution can timely detect abnormal temperature areas to prevent the laser amplifier from overheating and causing performance degradation or damage, thereby improving the reliability and safety of the system. At the same time, according to the predicted results of the temperature adjustment formula, the intelligent cooling system automatically adjusts cooling parameters such as coolant flow rate, cooling fan speed, etc. to achieve precise temperature control. The cooling system continuously receives the latest temperature data and dynamically adjusts the cooling strategy to ensure that the temperature remains within the ideal range. The intelligent thermal management system can effectively control the temperature of the laser amplifier, avoid performance problems caused by excessively high or low temperatures, extend the life of the equipment, reduce maintenance and replacement costs, and ensure the stability and efficiency of the system.

[0091] Please see attached Figure 1 In a preferred embodiment of the present invention, the telescope system is composed of a convex lens and a concave lens to achieve beam expansion and collimation. The magnification formula is:

[0092]

[0093] Where M is the magnification, f 1 and f 2 The focal lengths of the concave lens and convex lens are respectively selected. High-quality convex and concave lenses are selected to ensure that the focal length of the lens is accurate, the material transparency is high, and the optical loss is reduced. The concave lens and convex lens are installed in the beam expansion system according to the designed optical path to ensure that the center of the lens is aligned with the center of the laser beam. The laser beam is expanded through the concave lens, and then the expanded beam is collimated through the convex lens. The function of the concave lens is to diverge the beam, and the function of the convex lens is to re-collimate the divergent beam to make it a parallel beam. Through the expansion and collimation of the telescope system, the uniformity of the laser beam is significantly improved, and the influence of uneven spot on the laser amplification effect is reduced. The uniform beam distribution improves the efficiency of dye laser amplification and makes the energy of the output laser more stable and consistent. Through the combination of convex and concave lenses, efficient beam expansion and collimation are achieved, the performance of the laser system is optimized, the efficiency of laser amplification and the quality of the output beam are improved, and the efficient and stable operation of the system in various applications is ensured.

[0094] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency dye laser amplification technology, characterized in that: The following steps are involved: Use high repetition rate ultrafast laser as pump source, and expand and collimate the pump light through a telescope system; The dye concentration is adjusted in real time by a microfluidic system and monitored in real time by a fluorescence detection system; Use photonic crystal frequency doubling crystal for frequency doubling conversion; Collect and normalize data on pump light intensity, dye concentration, and output power; Data analysis and system parameter optimization through deep learning models; An intelligent thermal management system is used to monitor and adjust the temperature distribution of the laser amplifier in real time.

2. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The pump light is monitored by a photodiode sensor and its intensity signal is calculated as follows: Among them, I pump (t) is the intensity of the spring light, V PD (t) is the photodiode output voltage, R PD is the responsivity of the photodiode, A eff is the effective area.

3. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The dye concentration is measured in real time by a microfluidic chip and a fluorescence detection system, and the calculation formula is: C dye (t)=k fluor ×I fluor (t) Among them, C dye (t) is the dye concentration, k fluor is the fluorescence detection coefficient, I fluor (t) is the fluorescence intensity.

4. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The output power is monitored in real time by a power meter, and the calculation formula is: Among them, P out (t) is the output power, V PM (t) is the voltage output of the power meter, G PM is the power meter gain, A cal is the calibration factor.

5. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The design and manufacturing steps of the photonic crystal frequency doubling crystal include: The plane wave expansion method is used to calculate the photonic crystal band gap structure. The calculation formula is: Where, ω(k): band gap center frequency, k: wave vector, G: reciprocal lattice vector, ∈: dielectric constant, E: electric field component; Adjust the period (Λ) and filling rate (f) of the photonic crystal, and the optimization formula is: n eff =f·n high +(1-f)·n low Where, Λ: photonic crystal period: double frequency wavelength, n eff : effective refractive index, f: filling rate of high refractive index material, n high : refractive index of high refractive index material, n low : The refractive index of the low refractive index material.

6. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The standardization process includes data cleaning and standardization: During data collection, a timestamp is added to each data point to facilitate time alignment during subsequent processing; Use median filter or mean filter to smooth the data and remove sudden noise; The specific formula for standardization is: X clean (t)=median(X(t-n / 2),...,X(t),...,X(t+n / 2)) Among them, X clean (t) is the cleaned data, median is the median filter function, n is the window size, Z is the standardized data, X is the original data, μ is the data mean, and σ is the data standard deviation.

7. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The deep learning model performs data processing and system parameter optimization through convolutional neural networks and recurrent neural networks.

8. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The training of the deep learning model uses the mean square error loss function and regularization term, and the calculation formula is: Among them, L is the loss function, θ represents the model parameters, and y i and are the actual and predicted system outputs, respectively, N is the total number of samples, and λ is the regularization coefficient.

9. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The intelligent thermal management system uses thermal imaging technology to monitor temperature distribution in real time and adjusts temperature according to the following formula: T next =T current -k·(T current -T ambient ) Among them, T next is the predicted temperature at the next time point, T current is the current temperature, T ambient is the ambient temperature, k is the adjustment coefficient.

10. The high-efficiency dye laser amplification technology according to claim 1, characterized in that: The telescope system is composed of a convex lens and a concave lens to achieve beam expansion and collimation. The magnification formula is: Where M is the magnification, f1 and f2 are the focal lengths of the concave lens and the convex lens respectively.

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