Intermediate and far infrared two-waveband laser

Abstract

The invention discloses an intermediate and far infrared two-waveband laser, comprising a CO2 laser gain module and a DF laser gain module, wherein the CO2 laser gain module comprises a CO2 laser discharge tube, a CO2 laser gain generator and a CO2 laser heat exchanging pipe which are in a sequential connection; the DF laser gain module comprises a DF laser discharge tube, a DF laser gain generator and a DF laser heat exchanging pipe in a sequential connection; the two heat exchanging pipes are connected with a vacuum system; the two laser gain modules are arranged side by side; the adjacent inner sides of the CO2 laser gain generator and the DF laser gain generator are mutually communicated to form a gain medium zone of the two-waveband laser; two sides of the gain medium zone are respectively connected with a two-waveband full-reflecting mirror and a two-waveband output mirror by pipelines; and the two-waveband full-reflecting mirror and the two-waveband output mirror form a laser resonant cavity which can extract two types of gain media. The laser is convenient to operate, stable in work and simple in adjustment of the light path, and can realize composite light emission of the intermediate and far infrared two-waveband lasers effectively.

Description

technical field [0001] The invention relates to a laser, in particular to a laser capable of realizing dual-band laser composite output. Background technique [0002] From the point of view of physics, all objects with a temperature higher than absolute 0K have infrared heat radiation. For an object at a certain temperature, the wavelength position of the maximum radiation follows Wien's law. Most of the infrared radiation of an object can only reach the optical system through the atmosphere. Certain wavelength bands with less attenuation are called atmospheric windows. The three most commonly used infrared atmospheric windows are: 1-3 microns, 3-5 microns and 8-12 microns . The exhaust temperature of engines equipped with various aircraft and motor vehicles is distributed in the range of 600K to 1000K, the temperature of various organisms is distributed in the range of 250K to 350K, and the corresponding peak wavelength ranges of infrared heat radiation are 3 to 5 microns...

AI Technical Summary

Problems solved by technology

[0008] (3) Multiple lenses in the optical path need to be coated with an infrared dual-band coating, and the process of coating a dual-band coating is complicated and expensive;

However, the optical axes of the guide light and the infrared laser cannot completely coincide, and auxiliary means such as thermal imaging cameras can only be used to observe the position of the spot. degree is not high

[0010] In addition to the above technical solutions, there is currently no high-performance mid (3-5 micron), far (8-12 micron) infrared dual-band laser device that can meet the needs of practical applications

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