Laser Emitter Temperature Extrapolation for Stable Output Intensity
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Solution Overview
Problem
Laser devices face challenges in accurately maintaining target laser intensity due to temperature variations in the emission region, leading to deviations in intensity and wavelength without frequent temperature measurements.
Innovation Solution
A method involving a calibration phase to measure and extrapolate the temperature of the emitter structure, allowing for precise adjustment of power supply to maintain target intensity by using pre-recorded data and algorithms, even between temperature measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequent temperature measurements are performed to maintain accurate laser intensity, then measurement precision is improved, but productivity deteriorates due to increased measurement time and frequency requirements
Solution Approach 1:
The patent applies preliminary action by performing temperature measurements only during calibration phases before actual laser operation, and using extrapolation algorithms to predict temperature during operation. This eliminates the need for frequent temperature measurements during laser operation, thereby maintaining measurement accuracy while improving productivity.
Solution Approach 2:
The patent implements feedback through extrapolation algorithms that continuously predict temperature based on initial calibration data and operational parameters. This feedback mechanism allows the system to maintain accurate temperature compensation without requiring direct frequent measurements, thus resolving the contradiction between measurement precision and productivity.
2Manufacturing precision
If temperature compensation is applied to maintain target intensity, then manufacturing precision is improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent replaces complex real-time temperature measurement and mechanical adjustment systems with computational methods. By using extrapolation algorithms and pre-stored calibration data, the system achieves temperature compensation through software-based calculations rather than hardware-based real-time measurement and adjustment mechanisms, thereby reducing device complexity while maintaining manufacturing precision.
Solution Approach 2:
The patent uses copying by storing calibration data obtained during calibration phases and replicating its use during operation through extrapolation. Instead of requiring complex real-time measurement systems, the system copies the calibration approach to operational conditions via algorithmic prediction, simplifying the control system while maintaining intensity accuracy.
3Reliability
If real-time temperature monitoring is implemented to prevent intensity deviations, then reliability is improved, but loss of time increases due to continuous measurement and adjustment cycles
Solution Approach 1:
The patent applies preliminary action by completing temperature calibration before operation and using extrapolation to maintain reliability during operation without continuous measurements. This preliminary calibration combined with predictive extrapolation ensures laser intensity stability while eliminating time-consuming continuous measurement and adjustment cycles during operation.
Solution Approach 2:
The patent implements periodic action by performing temperature measurements only during calibration phases rather than continuously during operation. This periodic measurement approach, combined with extrapolation for real-time compensation, maintains laser reliability while significantly reducing the time lost to measurement and adjustment activities.
Data Source
AI summary
A method for operating a laser device is provided, the method comprising providing an emitter structure of the laser device with a first amount of power by a driving circuit of the laser device. The emitter structure is configured to emit laser radiation during operation, extrapolating the temperature of the emitter structure. Extrapolating the temperature of the emitter structure includes receiving a temperature value measured for the emitter structure provided with the first amount of power during a calibration phase and providing the emitter structure with a second amount of power by the driving circuit. The second amount of power corresponds to the power required for the emitter structure emitting a target intensity of laser radiation at the extrapolated temperature. Furthermore, a laser device is provided.