A tunable semiconductor laser diode temperature control system

Abstract

The utility model relates to temperature control device technical field discloses a kind of tunable semiconductor laser diode temperature control system, including fixed seat, the right side of the fixed seat is provided with cooling mechanism, the bottom of the fixed seat is provided with temperature measuring mechanism, the temperature measuring mechanism is used to measure the temperature of the object to be measured, the bottom of the fixed seat four corners is provided with air cooling mechanism, the air cooling mechanism is used to use airflow to device cooling, the top of the fixed seat is provided with laser mechanism, the temperature measuring mechanism includes light source board, the top of the light source board is fixedly connected in the bottom of fixed seat, the bottom of the light source board is provided with a plurality of fixed holes, the bottom of the light source board is screw-threaded connection with a plurality of bolts. In the utility model, through the real-time monitoring of temperature sensor, the working temperature can be effectively obtained, the precise temperature control of tunable semiconductor laser diode is realized, and the wavelength and power stability of laser output are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of temperature control device technology, and in particular to a tunable semiconductor laser diode temperature control system. Background Technology

[0002] Semiconductor laser diode temperature control is a technology that maintains a stable operating temperature through a temperature control device. Since temperature affects wavelength, power, and lifespan, thermistors are used to monitor the temperature in real time. Combined with a cooler and heat dissipation structure, precise control is achieved through algorithm adjustment to ensure the stability of the laser output wavelength and the reliability of the power. This technology is used in communication and medical scenarios where laser parameters are critical.

[0003] The wavelength of tunable semiconductor laser diodes is strongly correlated with temperature. Temperature control devices achieve wavelength tuning by precisely adjusting the temperature. Temperature fluctuations can lead to power instability and mode switching. Temperature control can ensure that the output wavelength is continuously adjustable and stable, meeting the requirements of precise wavelength tuning and stable output in spectral analysis, gas detection, and optical communication scenarios.

[0004] When measuring the concentration of dust in a flue using the principle of light scattering, light-emitting diodes (LEDs) are used as the light source. However, LEDs are highly sensitive to temperature. Unstable ambient temperatures can severely affect the stability of the light source, thereby affecting the accuracy of dust measurement and reducing the performance of the equipment. Existing technologies use fans to cool the LEDs and lower their operating temperature to ensure the stability of the laser output wavelength. However, in actual use, fans can only cool the LEDs and cannot control the temperature. Furthermore, they cannot effectively obtain the operating temperature of the LEDs, resulting in unstable wavelength and power of the laser output. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a tunable semiconductor laser diode temperature control system, which aims to improve the problem that in the prior art, fans can only cool but not control the temperature, and cannot effectively obtain the operating temperature of the light-emitting diode, resulting in unstable wavelength and power of laser output.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tunable semiconductor laser diode temperature control system, including a fixed base, a cooling mechanism provided on the right side of the fixed base, a temperature measuring mechanism provided at the bottom of the fixed base for measuring the temperature of the object to be measured, air cooling mechanisms provided at the four corners of the bottom of the fixed base for cooling the device using airflow, and a laser mechanism provided at the top of the fixed base;

[0007] The temperature measuring mechanism includes a light source plate, the top of which is fixedly connected to the bottom of a mounting base. The bottom of the light source plate has multiple fixing holes, and multiple bolts are threadedly connected to the bottom of the light source plate. A temperature sensor is fixedly connected to the top of the light source plate.

[0008] As a further description of the above technical solution:

[0009] The air-cooling mechanism includes a fan frame, which is located at the bottom of the fixed base. Fan blades are rotatably connected to the inner side of the fan frame. Multiple mounting holes are provided at the four corners of the top of the fan frame, and multiple studs are fixedly connected at the four corners of the top of the fan frame.

[0010] As a further description of the above technical solution:

[0011] The cooling mechanism includes a solenoid valve, the left side of which is fixedly connected to the rear right side of the mounting base, an air inlet quick connector is fixedly connected to the rear side of the solenoid valve, and an air outlet quick connector is fixedly connected to the front left side of the mounting base.

[0012] As a further description of the above technical solution:

[0013] An air outlet is provided at the front left end of the fixed base, and an air inlet is provided at the rear right end of the fixed base.

[0014] As a further description of the above technical solution:

[0015] The air-cooling mechanism also includes multiple reinforcing ribs, which are fixedly connected to the top of the fan frame at equal intervals.

[0016] As a further description of the above technical solution:

[0017] The laser mechanism includes a laser tube, the bottom of which is fixedly connected to the top of a fixed base, and a protective base is fixedly connected to the top of the fixed base.

[0018] As a further description of the above technical solution:

[0019] The mounting base is chamfered on all four sides, and the top and bottom outer sides of the fan bracket are also chamfered.

[0020] As a further description of the above technical solution:

[0021] All of the studs are hexagonal in design and are arranged at equal intervals.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the light source board increases the contact area with air, thereby improving heat dissipation efficiency and reducing the device temperature. The bottom of the temperature sensor is attached to the light source board. Through real-time monitoring by the temperature sensor, the operation of the air-cooling mechanism and the cooling mechanism can be precisely controlled. The operating temperature of the light-emitting diode can be effectively obtained, and precise temperature control of the tunable semiconductor laser diode can be achieved, ensuring the stability of the wavelength and power of the laser output and ensuring the stable operation of the device.

[0024] 2. In this utility model, the studs at the top corner of the fan frame cooperate with the mounting holes to fix the fan frame to the bottom of the mounting base, ensuring a stable installation. The fan blades are rotatably connected to the inside of the fan frame. When the fan blades rotate, they generate airflow, which blows directly at the light source board, accelerating the airflow around the device, carrying away heat, and assisting in cooling. This achieves stable installation of the fan frame and rotation of the fan blades to deliver air, providing auxiliary heat dissipation for the device and ensuring that the device operates at a suitable temperature. Attached Figure Description

[0025] Figure 1 This is a perspective view of a tunable semiconductor laser diode temperature control system proposed in this utility model;

[0026] Figure 2 This is a bottom view of a tunable semiconductor laser diode temperature control system proposed in this utility model;

[0027] Figure 3 This is an exploded view of the temperature measuring mechanism in a tunable semiconductor laser diode temperature control system proposed in this utility model;

[0028] Figure 4 This is an exploded view of the air-cooling mechanism in a tunable semiconductor laser diode temperature control system proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the cooling mechanism in a tunable semiconductor laser diode temperature control system proposed in this utility model.

[0030] Legend:

[0031] 1. Mounting base; 2. Temperature measuring mechanism; 201. Light source board; 202. Mounting hole; 203. Bolt; 204. Temperature sensor; 3. Air cooling mechanism; 301. Fan bracket; 302. Fan blade; 303. Stud; 304. Mounting hole; 305. Reinforcing rib; 4. Cooling mechanism; 401. Solenoid valve; 402. Quick-connect air inlet; 403. Quick-connect air outlet; 5. Air inlet; 6. Air outlet; 7. Laser mechanism; 701. Laser tube; 702. Protective base. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a tunable semiconductor laser diode temperature control system, including a fixed base 1, an air passage inside the fixed base 1, a cooling mechanism 4 on the right side of the fixed base 1 for cooling a temperature measuring mechanism 2, a temperature measuring mechanism 2 at the bottom of the fixed base 1 for measuring the temperature of the object to be measured, a wind-cooling mechanism 3 at each of the four corners at the bottom of the fixed base 1 for cooling the device using airflow, and a laser mechanism 7 at the top of the fixed base 1.

[0034] The temperature measuring mechanism 2 includes a light source plate 201, which increases the contact area with air and increases the heat dissipation capacity. The top of the light source plate 201 is fixedly connected to the bottom of the mounting base 1. The bottom of the light source plate 201 has multiple fixing holes 202. Bolts 203 fix the light source plate 201 to the bottom of the mounting base 1 through the fixing holes 202. The bottom of the light source plate 201 is threaded with multiple bolts 203. The top of the light source plate 201 is fixedly connected to a temperature sensor 204. The bottom of the temperature sensor 204 is attached to the light source plate 201. The top of the temperature sensor 204 measures the temperature through the center of the mounting base 1.

[0035] Specifically, the mounting base 1 has an internal ventilation channel providing a compressed gas flow path for the cooling mechanism 4. The cooling mechanism 4 is located on the right side of the mounting base 1, used to cool the temperature measuring mechanism 2, achieving temperature control. The temperature measuring mechanism 2 is located at the bottom of the mounting base 1, used to measure the temperature of the object being measured and collect temperature data. Air-cooling mechanisms 3 are located at the four corners of the bottom of the mounting base 1, used to cool the device using airflow, assisting in heat dissipation. A laser mechanism 7 is located at the top of the mounting base 1. The temperature measuring mechanism 2 includes a light source plate 201, which increases the contact area with air, increasing heat dissipation capacity and improving heat dissipation. For efficiency, the top of the light source board 201 is fixedly connected to the bottom of the fixing base 1, realizing the connection and fixation between the light source board 201 and the fixing base 1. The bottom of the light source board 201 has multiple fixing holes 202. Bolts 203 fix the light source board 201 to the bottom of the fixing base 1 through the fixing holes 202, which facilitates the installation and fixation of the light source board 201. The bottom of the light source board 201 is threaded with multiple bolts 203. The top of the light source board 201 is fixedly connected to a temperature sensor 204. The bottom of the temperature sensor 204 is attached to the light source board 201. The top of the temperature sensor 204 measures the temperature through the center of the fixing base 1, realizing the accurate measurement of the temperature of the object to be measured, thereby controlling the air cooling mechanism 3 and the cooling mechanism 4.

[0036] Reference Figure 1 , Figure 2 and Figure 4 The air-cooling mechanism 3 includes a fan frame 301, which is fixed to the bottom of the fixed base 1 by studs 303. The fan frame 301 is located at the bottom of the fixed base 1. The fan blades 302 are rotatably connected to the inner side of the fan frame 301. The fan blades 302 rotate inside the fan frame 301 to provide airflow and blow directly at the light source board 201. Multiple mounting holes 304 are provided at the four corners of the top of the fan frame 301. The studs 303 can pass through the mounting holes 304. Multiple studs 303 are fixedly connected to the four corners of the top of the fan frame 301.

[0037] Specifically, the fan bracket 301 is fixed to the bottom of the mounting base 1 by studs 303. The fan bracket 301 is set at the bottom of the mounting base 1 to achieve the installation and fixation of the fan bracket 301 at the bottom of the mounting base 1. The fan blades 302 are rotatably connected to the inner side of the fan bracket 301. The fan blades 302 rotate inside the fan bracket 301 to provide airflow and accelerate the airflow around the device to assist in cooling. Multiple mounting holes 304 are provided at the four corners of the top of the fan bracket 301. The studs 303 can pass through the mounting holes 304 to facilitate the installation and cooperation between the studs 303 and the fan bracket 301. Multiple studs 303 are fixedly connected at the four corners of the top of the fan bracket 301 to provide fixing components for the connection between the fan bracket 301 and the mounting base 1.

[0038] Reference Figure 1 , Figure 2 and Figure 5 The cooling mechanism 4 includes a solenoid valve 401. The flow rate of the compressed gas inside the fixed seat 1 is controlled by the solenoid valve 401. The left side of the solenoid valve 401 is fixedly connected to the rear right side of the fixed seat 1. An air inlet quick connector 402 is fixedly connected to the rear side of the solenoid valve 401. The air inlet quick connector 402 is connected to the solenoid valve 401 and is used for the entry of compressed gas. An air outlet quick connector 403 is fixedly connected to the front left side of the fixed seat 1 and is used for the release of compressed gas. An air outlet 6 is opened at the front left side of the fixed seat 1, and an air inlet 5 is opened at the rear right side of the fixed seat 1. Compressed gas enters from the air inlet 5 and exits from the air outlet 6, carrying away the heat of the temperature sensor 204.

[0039] Specifically, the solenoid valve 401 controls the flow rate of compressed gas inside the fixed seat 1 according to the control signal, thereby achieving precise adjustment of the cooling gas flow rate. The left side of the solenoid valve 401 is fixedly connected to the rear right end of the fixed seat 1, enabling the solenoid valve 401 to be positioned and installed on the fixed seat 1. An inlet quick connector 402 is fixedly connected to the rear side of the solenoid valve 401, which connects to the solenoid valve 401 and is used for the entry of compressed gas, providing a gas input interface for the cooling system. An outlet quick connector is fixedly connected to the front left end of the fixed seat 1. 403, the quick-release valve 403 is used to release compressed gas and provide a discharge channel for compressed gas. The front left end of the fixed base 1 has an air outlet 6, which provides a discharge channel for compressed gas and ensures the integrity of gas flow. The rear right end of the fixed base 1 has an air inlet 5, which is used to introduce compressed gas and provide a gas source for the cooling process. The compressed gas enters from the air inlet 5 and exits from the air outlet 6, carrying away the heat of the temperature sensor 204, thereby cooling the temperature sensor 204 and ensuring the accuracy of temperature measurement.

[0040] Reference Figure 1 , Figure 4 and Figure 5 The air-cooling mechanism 3 also includes multiple reinforcing ribs 305, which reinforce the fan frame 301. The multiple reinforcing ribs 305 are all fixedly connected to the top of the fan frame 301 at equal intervals. The laser mechanism 7 includes a laser tube 701, which is used to emit light waves. The bottom of the laser tube 701 is fixedly connected to the top of the fixed base 1. The top of the fixed base 1 is fixedly connected to a protective base 702, which protects the laser tube 701 from impact. The fixed base 1 has a chamfered design on all four sides. The top outer side and bottom outer side of the fan frame 301 also have a chamfered design. The multiple studs 303 are all hexagonal in design, which makes it easy to install and disassemble with a hex wrench. The multiple studs 303 are all arranged at equal intervals to evenly distribute the force.

[0041] Specifically, reinforcing ribs 305 strengthen the fan frame 301, improving its structural strength and stability. Multiple reinforcing ribs 305 are equidistantly fixed to the top of the fan frame 301, achieving uniform reinforcement. The laser mechanism 7 includes a laser tube 701, which emits light waves to achieve laser emission. The bottom of the laser tube 701 is fixedly connected to the top of the mounting base 1, enabling its installation and fixation. A protective base 702 is fixedly connected to the top of the mounting base 1 to protect the laser tube. To prevent impact and damage to the laser tube 701, the mounting base 1 is chamfered on all four sides to reduce the sharpness of its corners and lower the risk of damage during collisions. The top and bottom outer sides of the fan bracket 301 are also chamfered to reduce safety hazards and collision damage caused by the corners of the fan bracket 301. Multiple studs 303 are hexagonal in design to facilitate installation and removal with a hex wrench, improving the ease of installation and removal of studs 303. Multiple studs 303 are arranged at equal intervals to evenly distribute the force and ensure the stability of the connection structure.

[0042] Working principle: Temperature sensor 204 starts working, with its bottom tightly attached to the light source plate 201 and its top passing through the center of the fixing base 1 to measure the temperature of the semiconductor laser diode in real time. Temperature sensor 204 transmits the collected temperature data to the system control unit. The control unit analyzes and processes the data according to the preset temperature threshold. If the measured temperature exceeds the set threshold, the control unit immediately activates the air cooling mechanism 3 and the cooling mechanism 4. In the air cooling mechanism 3, the fan blade 302 rotates inside the fan frame 301, and the generated airflow blows directly onto the light source plate 201. The fan frame 301 is firmly fixed to the bottom of the fixing base 1 by the studs 303 passing through the mounting holes 304. The reinforcing ribs 305 further reinforce the fan frame 301 to ensure stable operation and accelerate the airflow around the device to remove some heat.

[0043] When the cooling mechanism 4 is running, the quick-connect air inlet 402 connects to an external air source to introduce compressed gas. The solenoid valve 401, based on signals from the control unit, precisely regulates the flow rate of compressed gas entering the ventilation channel inside the mounting base 1. The compressed gas enters from the air inlet 5 on the rear right side of the mounting base 1, flows within the ventilation channel, exchanges heat with the temperature sensor 204 and surrounding components, absorbs heat, and is then discharged from the air outlet 6 on the front left side of the mounting base 1, exiting through the quick-connect air outlet 403. This effectively removes heat from the temperature sensor 204 and other components, achieving rapid cooling. The light source board 201 passes through the mounting hole 203 via bolts 203. 2. Fixed to the bottom of the mounting base 1, the larger surface area increases the contact area with air, which helps to improve heat dissipation efficiency. The laser tube 701 is fixed to the top of the mounting base 1 and emits light waves normally under the protection of the protective base 702. The chamfered design of the mounting base 1 and the fan bracket 301 reduces the risk of collision damage. The hexagonal design of the stud 303 facilitates installation and disassembly. The equidistant arrangement makes the force uniform. As the temperature drops, the temperature sensor 204 continuously monitors and feeds back data. Based on the feedback information, the speed of the solenoid valve 401 and the fan blade 302 is dynamically adjusted to keep the device temperature stable within the preset range, so as to achieve stable operation and precise temperature control of the device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tunable semiconductor laser diode temperature control system, comprising a mounting base (1), characterized in that: A cooling mechanism (4) is provided on the right side of the fixed base (1), a temperature measuring mechanism (2) is provided at the bottom of the fixed base (1), the temperature measuring mechanism (2) is used to measure the temperature of the object to be measured, a wind-cooling mechanism (3) is provided at each of the four corners of the bottom of the fixed base (1), the wind-cooling mechanism (3) is used to cool the device with airflow, and a laser mechanism (7) is provided at the top of the fixed base (1). The temperature measuring mechanism (2) includes a light source plate (201), the top of which is fixedly connected to the bottom of the fixing base (1). The bottom of the light source plate (201) has multiple fixing holes (202), and the bottom of the light source plate (201) is threaded with multiple bolts (203). The top of the light source plate (201) is fixedly connected with a temperature sensor (204).

2. The tunable semiconductor laser diode temperature control system according to claim 1, characterized in that: The air-cooling mechanism (3) includes a fan frame (301), which is located at the bottom of the fixed base (1). The fan frame (301) is rotatably connected to the inner side of the fan frame (301). Multiple mounting holes (304) are provided at the four corners of the top of the fan frame (301), and multiple studs (303) are fixedly connected at the four corners of the top of the fan frame (301).

3. The tunable semiconductor laser diode temperature control system according to claim 1, characterized in that: The cooling mechanism (4) includes a solenoid valve (401), the left side of which is fixedly connected to the rear right side of the fixed base (1), the rear side of which is fixedly connected to an air inlet quick connector (402), and the front left side of the fixed base (1) is fixedly connected to an air outlet quick connector (403).

4. The tunable semiconductor laser diode temperature control system according to claim 1, characterized in that: An air outlet (6) is provided on the left front side of the fixed base (1), and an air inlet (5) is provided on the rear right side of the fixed base (1).

5. The tunable semiconductor laser diode temperature control system according to claim 1, characterized in that: The air-cooling mechanism (3) also includes a plurality of reinforcing ribs (305), which are all fixedly connected at equal intervals to the top of the fan frame (301).

6. The tunable semiconductor laser diode temperature control system according to claim 1, characterized in that: The laser mechanism (7) includes a laser tube (701), the bottom of which is fixedly connected to the top of the fixed base (1), and a protective base (702) is fixedly connected to the top of the fixed base (1).

7. The tunable semiconductor laser diode temperature control system according to claim 2, characterized in that: The mounting base (1) has chamfered edges on all four sides, and the fan bracket (301) has chamfered edges on the top and bottom outer sides.

8. The tunable semiconductor laser diode temperature control system according to claim 2, characterized in that: All of the studs (303) are hexagonal in design and are arranged at equal intervals.

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