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A solid-state laser with adjustable laser output state

A solid-state laser and output state technology, applied in the laser field, can solve the problem that the laser cannot be effectively controlled actively, and achieve the effect of increasing the pump light, reducing the processing cost, and overcoming the weak absorption.

Active Publication Date: 2021-08-03
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a solid-state laser with adjustable laser output state, the purpose of which is to change the absorption capacity of the gain medium for laser light by controlling the loss in the resonant cavity, and then control the laser Output lasers in different states, thereby solving the technical problem that the laser cannot be effectively actively controlled in the prior art

Method used

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  • A solid-state laser with adjustable laser output state
  • A solid-state laser with adjustable laser output state
  • A solid-state laser with adjustable laser output state

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Experimental program
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Effect test

Embodiment 1

[0085] In this embodiment, the disk laser is taken as an example for illustration, as figure 2 As shown, the loss modulation module 9 is an acousto-optic modulator, and the acousto-optic modulator is arranged in the 1030nm laser optical path 10 . Both the first gain medium 2 and the second gain medium 6 are Yb:YAG discs with a thickness of 200um, and the first output mirror 3 has a reflectivity of 99% for 1030nm laser, but a low reflectivity for 1048nm laser. The second output mirror 7 has a reflectivity of 99% for 1048nm laser light and a low reflectivity for 1030nm laser light. Both the first reflection mirror 5 and the second reflection mirror 8 are high reflection mirrors.

[0086] In the test, the pumping light emitted by the 940nm pumping light source 1 is incident on the first gain medium 2 after passing through the multi-pass pumping system to generate 1030nm laser and start to oscillate in the first resonant cavity. Then the second gain medium 6 absorbs the high-po...

Embodiment 2

[0090] In this embodiment, the disk laser is taken as an example for illustration, as Figure 6 As shown, the loss modulation module 9 is an acousto-optic modulator, and the acousto-optic modulator is arranged in the 1048nm laser optical path 10 . Both the first gain medium 2 and the second gain medium 6 are Yb:YAG discs with a thickness of 200um, and the first output mirror 3 has a reflectivity of 99% for 1030nm laser, but a low reflectivity for 1048nm laser. The second output mirror 7 has a reflectivity of 99% for 1048nm laser light and a low reflectivity for 1030nm laser light. Both the first reflection mirror 5 and the second reflection mirror 8 are high reflection mirrors.

[0091] In the test, the pumping light emitted by the 940nm pumping light source 1 is incident on the first gain medium 2 after passing through the multi-pass pumping system to generate 1030nm laser and start to oscillate in the first resonant cavity. Then the second gain medium 6 absorbs the high-po...

Embodiment 3

[0095] In this embodiment, a disk laser is taken as an example for illustration, the loss modulation module 9 is an electro-optic modulator, and the electro-optic modulator is arranged in the 1030nm laser optical path 10 . Both the first gain medium 2 and the second gain medium 6 are Yb:YAG discs with a thickness of 200um, and the first output mirror 3 has a reflectivity of 99% for 1030nm laser, but a low reflectivity for 1048nm laser. The second output mirror 7 has a reflectivity of 99% for 1048nm laser light and a low reflectivity for 1030nm laser light. Both the first reflection mirror 5 and the second reflection mirror 8 are high reflection mirrors.

[0096] In the test, the pumping light emitted by the 940nm pumping light source 1 is incident on the first gain medium 2 after passing through the multi-pass pumping system to generate 1030nm laser and start to oscillate in the first resonant cavity. Then the second gain medium 6 absorbs the high-power 1030nm laser in the ca...

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Abstract

The invention discloses a solid-state laser with adjustable laser output state, which belongs to the field of laser technology and includes a first resonant cavity, a first gain medium, a second resonant cavity, a second gain medium, a pump light source and a resonant cavity loss modulation module The resonator loss modulation module is used to adjust the resonator loss; reduce the second resonator loss, the second gain medium increases the absorption capacity of the first laser, so that the gain of the second gain medium quickly reaches the threshold and generates the second laser, Realize that both the first laser and the second laser are pulsed output lasers; increase the loss of the second resonator, and the second gain medium reduces the absorption capacity of the first laser, slowing down the gain speed of the second gain medium, and realizing the first laser Both the second laser and the second laser are continuous output lasers. The invention controls the laser to work in the state of continuous, stable pulse, stable multi-pulse and chaotic pulse by controlling the absorption bleaching characteristic of the laser crystal with saturated absorption characteristic in the built sub-cavity.

Description

technical field [0001] The invention belongs to the field of laser technology, and more specifically relates to a solid-state laser with adjustable laser output state. Background technique [0002] With the rapid development of laser technology, lasers are playing an increasingly important role in the fields of industry, medical treatment, communication, and national defense. In practical applications, it is often required that a laser can work in a variety of different states (stable continuous, stable pulse) and can achieve fast switching. This puts forward higher requirements for the design of the laser. [0003] In general, as a dynamic system, the laser usually works in a stable state in design, either a stable continuous state, or a stable laser output state. These two states can be effectively switched in actively Q-switched lasers. However, for the passively Q-switched lasers implemented by saturable absorbers, effective active control cannot be performed because ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08H01S3/081H01S3/082H01S3/102H01S3/131
CPCH01S3/08H01S3/0813H01S3/082H01S3/102H01S3/131
Inventor 朱广志吴明朗钱烨烽宋恩茂龙少杰彭煜
Owner HUAZHONG UNIV OF SCI & TECH