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Electro-optic Q-switched pulse laser device with repeat frequency being variable in wide range

A repetition rate and laser technology, applied in the field of lasers, can solve the problem of low repetition rate of laser pulses

Active Publication Date: 2012-10-10
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that in the output laser pulse sequence of the existing electro-optic Q-switched pulsed laser, especially the pulsed Q-switched laser with high energy and high peak power, the repetition frequency of the laser pulse is low

Method used

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  • Electro-optic Q-switched pulse laser device with repeat frequency being variable in wide range
  • Electro-optic Q-switched pulse laser device with repeat frequency being variable in wide range
  • Electro-optic Q-switched pulse laser device with repeat frequency being variable in wide range

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] The electro-optic Q-switched laser with wide range adjustable repetition rate proposed by the present invention can be implemented in the same laser pulse sequence, including both high repetition frequency laser pulses and low repetition frequency laser pulses, and high repetition frequency and low repetition frequency laser pulses It has considerable single pulse energy and peak power; when the repetition frequency of the high repetition frequency laser pulse is greater than the upper limit of the laser pulse repetition frequency determined by the laser medium, the single pulse energy of the high repetition frequency laser pulse output from the laser will decrease, and...

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Abstract

The invention relates to laser technology field and discloses an electro-optic Q-switched pulse laser device with repeat frequencies being variable in a wide range. The electro-optic Q-switched pulse laser device comprises a total reflection mirror, a Q-switched unit, a laser gain unit and an output unit which are connected successively. An electro-optic Q-switched crystal in the Q-switched unit can work in a high-frequency state and can realize output of laser Q-switched pulses with various repeat frequencies through controlling pump pulses applied on the gain unit and Q-switched pulses applied on the Q-switched unit. Compared with the prior-art electro-optic Q-switched laser devices that can only work in a low repeat frequency state, the electro-optic Q-switched pulse laser device in the invention can not only work in a low repeat frequency state, but also can work in a high repeat frequency state in a short period of time; and the repeat frequencies are in a large range and can be adjusted.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an electro-optic Q-switched pulse laser with a variable repetition rate in a large range. Background technique [0002] Laser Q-switched laser technology has developed extremely rapidly since it was proposed in 1961. This technology is an important technology that compresses the entire energy of the laser into a very narrow pulse and emits it, thereby increasing the peak power of the laser by several orders of magnitude. Electro-optic Q-switching is to use the electro-optic effect of certain crystals to make electro-optic Q-switching switching devices. Electro-optic Q-switching has a short switching time (about 10 -9 s), high efficiency, precise control of Q-switching time, narrow output pulse width (10-20ns), high peak power (above tens of MW), etc., is a widely used Q-switching technology at present. When electro-optic Q-switching is used, polarizers and The function of the w...

Claims

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Application Information

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IPC IPC(8): H01S3/11
Inventor 巩马理王涛柳强闫平黄磊张海涛刘欢
Owner TSINGHUA UNIV
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