Self-stabilization passively Q-switched laser

A laser and self-stabilizing technology, which is applied in the direction of lasers, laser components, laser components, etc., can solve the problems of stable pump light intensity fluctuations and other issues, achieve pulse time interval and energy stability, and expand the scope of application Effect

Active Publication Date: 2017-02-15
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0005] The technical problem solved by the present invention is to overcome the deficiencies of the prior art, provide a passive Q-switched laser that relies on its own pulse regulation to improve output stability, and solve the problem that the stability of traditional passive Q-switched lasers is easily affected by the gain medium spontaneous emission noise Problems related to pump light intensity fluctuations

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  • Self-stabilization passively Q-switched laser

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0020] figure 1 The structure of the self-stabilizing passive Q-switched laser proposed by the present invention is shown. Such as figure 1 As shown, the laser includes: a laser pump source 1 , a gain medium 2 , a saturable absorber 3 , an output cavity mirror 4 , a beam splitter 5 , an attenuator 6 , a fiber retarder 7 and a total reflection mirror 8 .

[0021] Among them, the laser pump source 1 is located on one side of the gain medium 2, and injects pump light with a certain spatial distribution and a specific wavelength into the gain medium to provide excitation energy to the gain medium and maintain the operation of the laser. The spectrum of the pump light It needs to match the absorption spectrum of the gain med...

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Abstract

The invention discloses a self-stabilization passively Q-switched laser. The self-stabilization passively Q-switched laser comprises a resonant cavity and a laser pulse feedback device; the resonant cavity is composed of a gain medium, a saturable absorber and an output cavity mirror; the resonant cavity absorbs energy provided by a laser pumping source, and is used for generating and outputting passively Q-switched pulse laser; the laser pulse feedback device is composed of an attenuator, an optical fibre delayer and a total-reflection mirror; and the laser pulse feedback device is used for feeding back the resonant cavity output laser pulse intercepted by a spectroscope to the resonant cavity after delaying the resonant cavity output laser pulse for a certain time and attenuating a certain energy. The self-stabilization passively Q-switched laser disclosed by the invention has the advantages that: the passively Q-switched pulse output by the laser is difficultly influenced by spontaneous radiation noise of the gain medium and pump light intensity fluctuation; and the pulse time interval and the energy stability can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of Q-switched lasers, in particular to a self-stabilized passive Q-switched laser. Background technique [0002] In order to meet the needs of narrow pulse width and high peak power pulse laser in the fields of industrial production, laser medical treatment, military application and basic scientific research, Q-switching technology came into being. By controlling the loss factor (or Q value) of the resonator to change according to a certain rule, at the beginning of the pump excitation, the resonator has high loss (low Q value), so that the laser has a high threshold and cannot generate laser oscillation. The energy gradually accumulates to a higher level. Then at the right moment, the loss factor of the cavity is suddenly reduced (high Q value), and the threshold value is lowered to a lower level. At this time, the accumulated energy will be converted into laser energy in a very short time, forming a narro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11H01S3/10H01S3/02H01S3/08
CPCH01S3/02H01S3/08H01S3/10H01S3/11
Inventor 李梦龙陶宇亮彭欢颜凡江蒙裴贝李旭
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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