Package of quantum cascade laser with thermoelectric refrigerator

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...

AI Technical Summary

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 current injection, and the laser will accelerate aging, which seriously affects the reliability and working life of the semiconductor laser.

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