Package of quantum cascade laser with thermoelectric refrigerator

A thermoelectric cooler and quantum cascade technology, applied in lasers, laser components, semiconductor lasers, etc., can solve problems that affect the reliability and working life of semiconductor lasers, high laser temperature, and laser aging

Inactive Publication Date: 2012-11-28
无锡沃浦光电传感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for semiconductor lasers with higher power, the biggest problem is that the temperature of the laser is too high under high cur

Method used

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  • Package of quantum cascade laser with thermoelectric refrigerator
  • Package of quantum cascade laser with thermoelectric refrigerator
  • Package of quantum cascade laser with thermoelectric refrigerator

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Experimental program
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Embodiment Construction

[0029] Figure 1a and Figure 1b It shows a schematic diagram of the packaging structure of the quantum cascade laser with a thermoelectric cooler of the present invention ( Figure 1a For air-cooled type, Figure 1b water-cooled), adopt the following structure:

[0030] The heat dissipation device 1 arranged outside the package shell, such as an air-cooled heat sink or a water-cooled micro-channel tube, is used to absorb all the heat conducted from the hot end of the thermoelectric cooler through the bottom layer of the shell, and generally adopts a forced convection type with an external fan and water-cooled heat dissipation methods. However, since the cooling capacity of the thermoelectric cooler decreases with the increase of the temperature difference, it is necessary to minimize the temperature increase of the radiator during design. In order to meet the required thermal performance, the flatness should be higher than 1mm / m, so additional polishing, flying knife cuttin...

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Abstract

The invention discloses a package of a quantum cascade laser with a thermoelectric refrigerator, which comprises a heat radiating device arranged outside a package tube shell, an HHL (High Heat Load) tube shell assembly and a laser tube core assembly, wherein the heat radiating device is used for absorbing all heat conducted from the hot end of the thermoelectric refrigerator via the bottom layer of the tube shell; the HHL tube shell assembly is used for reducing the influence of accumulated internal space heat on a detector tube core, and the internal part comprises the packaged thermoelectric refrigerator, an optical transmission window and a detector tube core assembly; and the laser tube core assembly comprises a laser tube core, an L-shaped transition heat sink and a thermistor and is used for transferring the heat of a detector chip to the cold end of the thermoelectric refrigerator. According to the invention, the double heat sink structure of high-heat-conductivity transition heat sink and heat sink combination is adopted, the heat radiating capability of the laser tube core can be effectively enhanced, and the deterioration of the internal working environment due to the heat radiation problem is reduced; and meanwhile, the working temperature can be controlled by using the thermoelectric refrigerator, and the package has the advantages of controllable temperature and reliability.

Description

technical field [0001] The invention relates to a package of a semiconductor device, in particular to a package of an HHL of a quantum cascade laser with a thermoelectric cooler (TEC). Background technique [0002] Compared with gas lasers and other solid-state lasers, semiconductor lasers have the advantages of simple structure, small size, low power consumption, low cost, and adjustable work, and become the pumping of solid-state lasers, laser printing, scanning, display, data An important light source for access, remote sensing, optical communication, etc. Since the output power of the current semiconductor laser is relatively small, the general package can meet the needs of users. However, for semiconductor lasers with higher power, the biggest problem is that the temperature of the laser is too high under high current injection, and the laser will accelerate aging, which seriously affects the reliability and working life of the semiconductor laser. Therefore, effectiv...

Claims

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Application Information

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IPC IPC(8): H01S5/024H01S5/022
Inventor 刘惠春马陆海
Owner 无锡沃浦光电传感科技有限公司
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