Medium wave infrared laser power stabilization system

Abstract

The invention discloses a medium wave infrared laser power stabilization system which mainly solves the problem that an existing system is not strong in stability and low in precision. The whole system comprises a medium wave infrared laser light source system (1), an infrared environment control chamber (2), an acoustic optical modulator (3), a spatial filter (4), a medium wave infrared thin film beam splitter (5), an optical chopper (6), a photoelectricity front-placing module (7), a feedback control module (8), an acoustic optical modulator driver (9) and a laser power detector (10). The medium wave infrared laser light source system outputs medium wave infrared lasers with power to be stabilized, and the infrared lasers pass through the acoustic optical modulator, the spacial filter, the medium wave infrared thin film beam splitter and the optical chopper and then irradiate a photoelectric detector to generate electric signals. The feedback control module processes the electric signals to obtain feedback information, and the acoustic optical modulator driver is controlled to adjust the acoustic optical modulator so as to stabilize the medium infrared laser power. The medium wave stimulate infrared laser power stabilization system has the advantages of being good in stability and high in precision and is suitable for stabilizing the medium wave infrared laser power with the wave band of 2.5 microns to 5 microns.

Description

technical field [0001] The invention belongs to the field of laser technology, and specifically relates to a photoelectric system for realizing stable control of output mid-wave infrared laser power according to a signal feedback mechanism, and is mainly used to realize high-precision stability of mid-infrared laser power. technical background [0002] Mid-wave infrared laser technology has a wide range of applications in scientific research, industry, military, medical and many other fields. The stability of mid-wave infrared laser power is a key factor in these applications. In actual use, when the mid-wave infrared laser is affected by small current and temperature changes, it will lead to fluctuations in the output power of the mid-wave infrared laser, that is, the instability of the output power of the mid-wave infrared laser. Therefore, as the mid-wave infrared laser is an important light source in these fields, it is especially important to maintain its power stabilit...

AI Technical Summary

Problems solved by technology

However, the above-mentioned device has the following deficiencies: it fails to effectively control the ambient temperature, making the measurement inaccurate, dark current, noise, etc. are greatly affected by the environment; the detection range is too wide and not targeted; the electrical signal processing process It is cumbersome, and the current noise is too large; when the laser is transmitted in space, it is often scattered due to flaws on the optical components or dust in the air, and the details of the optical path are not rigorous enough to effectively deal with the scattering

These deficiencies have seriously affected the accuracy and stability of the mid-wave infrared laser power stabilization system

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