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Adjustment-free cavity-length-variable laser device

A laser and cavity length technology, applied in the field of variable cavity length lasers, can solve problems such as difficult operation of laser parameters, and achieve the effect of ensuring stability

Active Publication Date: 2014-04-16
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that changing the cavity length to improve laser parameters is very difficult to operate, the present invention realizes a laser that can change the cavity length of the laser without readjusting the optical path by using Dove prisms in series and cooperating with the corresponding mechanical structure

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  • Adjustment-free cavity-length-variable laser device
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  • Adjustment-free cavity-length-variable laser device

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Embodiment Construction

[0012] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0013] figure 1 It is a schematic structural diagram of a laser with a variable cavity length according to an embodiment of the present invention. Such as figure 1 As shown, the laser includes: an output mirror 1, a laser rod 2, a total reflection mirror 3 and an optical path turning device 4;

[0014] The output mirror 1 , the laser rod 2 and the total reflection mirror 3 form a laser resonant cavity, and the optical path turning device 4 is placed on the optical path between the laser rod 2 and the total reflection mirror 3 .

[0015] figure 2 It is a schematic structural diagram of an optical path turning device according to an embodiment of the present invention. combine figure 1 and figure 2 As shown, the optical path turning device 4 includes a first...

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Abstract

The invention discloses an adjustment-free cavity-length-variable laser device. The laser device comprises an output mirror, a total-reflection mirror, a laser bar and a light path turning device, wherein the output mirror, the total-reflection mirror and the laser bar form a laser resonant cavity, and the light path turning device is placed on the portion, between the laser bar and the total-reflection mirror, of the light path. The light path turning device comprises a first reversing prism, a second reversing prism and a transversely-moving platform, wherein the first reversing prism and the second reversing prism are fixedly installed on the transversely-moving platform, the first reversing prism is perpendicularly fixed to the transversely-moving platform, the second reversing prism is horizontally and laterally fixed to the transversely-moving platform, and therefore it is ensured that the light entering the first reversing prism is kept parallel to the light leaving the second reversing prism. The cavity length of the laser device is changed by moving the transversely-moving platform, and the light path does not need to be readjusted.

Description

technical field [0001] The invention belongs to the field of solid-state lasers, in particular to an adjustment-free variable cavity length laser. Background technique [0002] In the prior art, Thomas G. Crow of the United States invented a crossed Borro prism resonant cavity in 1974; this technology has attracted the attention of the military of various countries and has been widely used. In 1994, Nobuo Yano of Japan invented a laser oscillator; a right-angle prism (special coating and working state) was used as a tail mirror, and a resonant cavity was formed with a planar output mirror to obtain a high anti-offset stability and a flat-top Gaussian beam output. In 1987, Fan Qikang and others from Zhejiang University designed a stable and collimated linearly polarized output laser; a corner cube was used as a refractor to form a folded cavity. The optical resonator of the laser can always keep collimated in the environment of strong vibration and large temperature change, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08
Inventor 胡文华王燕辛
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST