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Temperature compensation type constant temperature laser and constant temperature method

A temperature compensator and temperature compensation technology, applied in lasers, laser components, semiconductor lasers, etc., can solve problems such as low temperature control accuracy, high product cost of lasers, and central wavelength drift

Active Publication Date: 2013-09-04
INNO LASER TECH CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The heat energy generated by the semiconductor laser during the working process will cause the energy efficiency of the laser to decrease, resulting in many problems such as reduced efficiency and reduced life. Among them, the central wavelength of the laser emitted by the laser device is 808nm. In order to avoid the central wavelength of the laser The temperature of the laser device drifts, so the Peltier effect is usually used for semiconductor cooling of the laser device
In the Peltier effect, the charge carrier moves in the conductor to form a current. Since the charge carrier is at different energy levels in different materials, when it moves from a high energy level to a low energy level, it will release excess heat. On the contrary, it needs to absorb heat from the outside, that is, cooling. Among the existing conductive materials, semiconductor materials have extremely high thermoelectric potential, so they are often used to make thermoelectric coolers, and use this thermoelectric cooler to adjust the laser device. However, due to the influence of the cooling and heating capacity of the thermoelectric cooler, it is difficult to realize the temperature tuning of the high-power semiconductor laser
[0003] In order to meet the temperature tuning requirements of high-power semiconductor lasers, constant temperature lasers in the prior art such as Figure 16 As shown, the laser main body 1, the constant temperature heat sink 6 and the temperature control device 7 are stacked in sequence, wherein the temperature control device 7 adjusts the temperature of the constant temperature heat sink 6 through direct heat exchange, and then further adjusts the laser main body 1 through the constant temperature heat sink 6 temperature, the temperature control device 7 can be an electric heater / refrigerator, a plurality of thermoelectric coolers or high-precision water tanks, this temperature control method, since the laser main body 1, the constant temperature heat sink 6 and the temperature control device 7 are passed through The temperature is tuned by heat exchange, so it is prone to temperature delay, drift and other phenomena, resulting in low temperature control accuracy. high product cost

Method used

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  • Temperature compensation type constant temperature laser and constant temperature method

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Effect test

Embodiment 1

[0065] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the laser main body 1 includes a laser head 10 and a laser pumping device 11, the constant temperature heat sink assembly 2 includes a first constant temperature heat sink 200 and a second constant temperature heat sink 201, the temperature compensation device 21 includes at least one first temperature compensator 210 and at least one second temperature compensator 211 , and the constant temperature heat sink temperature acquisition device 22 includes at least one first temperature sensor 220 and at least one second temperature sensor 221 .

[0066] The laser head 10, the first constant temperature heat sink 200 and the fluid heat sink assembly 3 are stacked sequentially, the first temperature compensator 210 and the first temperature sensor 220 are all arranged on the first constant temperature heat sink 200, the laser The pumping device 11, the second constant temperature heat sink 201 and the fluid h...

Embodiment 2

[0071] Such as figure 1 , figure 2 , Figure 5 and Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the fluid heat sink assembly 3 includes a first fluid heat sink 300 and a second fluid heat sink 301, and the fluid heat sink temperature collection device 32 includes At least one third temperature sensor 320 and at least one fourth temperature sensor 321, the third temperature sensor 320 is arranged on the first fluid heat sink 300, and the fourth temperature sensor 321 is arranged on the second fluid heat sink 301, Both the first fluid heat sink 300 and the second fluid heat sink 301 are provided with cavities, each cavity is provided with an inlet and an outlet, and the first fluid heat sink 300 and the second fluid heat sink 301 are sequentially connected in series , and then communicated with the fluid output device 4, the laser head 10, the first constant temperature heat sink 200 and the first fluid heat sink 300 are stacked in seq...

Embodiment 3

[0073] Such as figure 1 , figure 2 , Figure 5 , Image 6 and Figure 7 As shown, the difference between this embodiment and Embodiment 2 is that the first fluid heat sink 300 and the second fluid heat sink 301 are connected in parallel with each other, and then communicate with the fluid output device 4 .

[0074] The above-mentioned embodiment 2 and embodiment 3 are only two forms of composition of the fluid heat sink assembly 3, and are not used to limit the present invention. In other embodiments of the present invention, the first fluid heat sink 300 can be multiple, more The first fluid heat sinks 300 are sequentially connected in series, parallel or mixed, and then stacked with the first constant temperature heat sink 200; the second fluid heat sinks 301 can be multiple, and the multiple second fluid heat sinks 301 are in turn After being connected in series, in parallel or in combination, they are stacked with the second constant temperature heat sink 201 .

[0...

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PUM

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Abstract

The invention discloses a temperature compensation type constant temperature laser, comprising a laser body, a constant temperature heat sink assembly and a fluid heat sink assembly, wherein the constant temperature heat sink assembly is provided with a temperature compensation device and a constant temperature heat sink temperature collecting device; the fluid heat sink assembly is provided with a fluid heat sink temperature collecting device; a cavity is formed in the fluid heat sink assembly and is provided with an inlet and an outlet; the laser also comprises a fluid output device and a data processing unit; and the fluid output device, the temperature compensation device, the constant temperature heat sink temperature collecting device and the fluid heat sink temperature collecting device are electrically connected to the data processing unit. Compared with the prior art, the high precision turning to the laser temperature is realized through a heat balance and temperature compensation mode, and meanwhile, compared with a temperature control mode that a heating device or a refrigeration device is adopted to directly exchange heat with the laser, the lower production cost is realized.

Description

technical field [0001] The invention relates to a constant-temperature laser and a constant-temperature method, in particular to a temperature-compensated constant-temperature laser and a constant-temperature method. Background technique [0002] The heat energy generated by the semiconductor laser during the working process will cause the energy efficiency of the laser to decrease, resulting in many problems such as reduced efficiency and reduced life. Among them, the central wavelength of the laser emitted by the laser device is 808nm. In order to avoid the central wavelength of the laser The temperature of the laser device drifts, so the Peltier effect is usually used for semiconductor cooling of the laser device. In the Peltier effect, the charge carrier moves in the conductor to form a current. Since the charge carrier is at different energy levels in different materials, when it moves from a high energy level to a low energy level, it will release excess heat. On the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/19H01S5/024
Inventor 赵晓杰张立国
Owner INNO LASER TECH CORP LTD