Acousto-optic Q-adjusting airflow chemical laser apparatus

A chemical laser, acousto-optic tuning technology, used in lasers, phonon exciters, laser parts and other directions, can solve the problem of not being able to fully meet high repetition frequency and high peak power gas flow chemical lasers, difficult to obtain pulsed lasers, and assembly processes. Advanced problems, to achieve the effect of good pulse stability and reliability, high repetition frequency, and easy adjustment

Inactive Publication Date: 2014-09-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

The use of rotating mirror Q-switching can obtain pulsed laser output under certain conditions, but it is subject to the influence of multiple output pulses, and the noise is large, the life of the shaft is short, and the assembly process is high, and it is difficult to obtain dozens of Pulsed lasers with repetition rates in the order of thousands or even hundreds of kilohertz
Therefore, the mechanical Q-switching method cannot fully satisfy the operation of high repetition rate and high peak power gas flow chemical lasers.

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  • Acousto-optic Q-adjusting airflow chemical laser apparatus
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Embodiment Construction

[0021] The following non-limiting examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way. The acousto-optic Q switch that uses described in the present invention is the MQS027-7C2B41 type TeO that British Gucci company produces 2 Sound and light Q switch.

[0022] as attached figure 1 As shown, the structure of an acousto-optic Q-switched airflow chemical laser device includes a kind of acousto-optic Q-switched airflow chemical laser device, including a vacuum chamber 5 and an optical resonant cavity 7, and the optical resonant cavity 7 is arranged in the vacuum chamber 5 The optical resonant cavity 7 includes: a gain medium area 6 for generating stimulated radiation light; a film polarizer 12 for changing the radiation light produced by the gain medium area 6 into linearly polarized light; an acousto-optic Q switch 10 , used to control whether the linearly polarized light output by the f...

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Abstract

The invention relates to an acousto-optic Q-adjusting airflow chemical laser apparatus. A resonant cavity of the apparatus employs a folded stable cavity structure. A blazed grating, an acousto-optic Q switch, a film Polaroid, a gain medium, a planar mirror 1, a planar mirror 2 and a plane concave front cavity mirror are successively arranged along the forward direction of output laser. According to the invention, the laser apparatus carries out Q adjustment by use of an acousto-optic effect of an acousto-optic medium, and through applying modulation signals to driving power supply signals, realizes periodical abrupt change of a high-Q value and a low-Q value of the resonant cavity so as to realize Q-adjusting pulse output of an airflow chemical laser. The apparatus has the advantages of compact structure, low power consumption, good pulse stability and reliability, capability of realizing high-repetition-rate and high-peak-power output, and the like, thereby being widely applied to such fields as photoelectric confrontation, laser remote sensing, laser detection and the like.

Description

technical field [0001] The invention belongs to the field of chemical laser devices, in particular to an acousto-optic Q-switched gas flow chemical laser device. Background technique [0002] Strongly coherent light sources in the mid-infrared band have important applications in the fields of photoelectric countermeasures, laser remote sensing, laser detection and component analysis, industrial processing, and medical treatment. Pneumatic chemical lasers work in the mid-infrared spectral range and have the advantages of high power, high efficiency, and good engineering amplification, and are expected to be practical coherent light sources. At present, most jet chemical lasers operate in continuous wave. If the laser can operate at high repetition rate and high peak power, its working efficiency can be increased by dozens of times, which makes the pulsed continuous wave chemical laser become an interesting problem. [0003] At present, most of the methods to realize the Q-sw...

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Application Information

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IPC IPC(8): H01S3/117H01S3/086H01S3/081
Inventor 王元虎多丽萍金玉奇唐书凯李国富李留成于海军汪健曹靖康元福
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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