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Laser amplifier

A laser amplifier and laser amplification technology, applied in the optical field, can solve the problems of complex structure, inconvenient installation and use, and large floor space, and achieve the effects of easy installation and use, reduced structural size, and improved utilization.

Pending Publication Date: 2021-07-30
北京盛镭科技有限公司 +1
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AI Technical Summary

Problems solved by technology

[0006] The structure is complex and occupies a large area, which leads to inconvenient installation and use; the utilization efficiency of pump light is relatively low; the introduction of a large number of lenses and other body structures leads to serious wavefront distortion and affects the output quality of the laser

Method used

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  • Laser amplifier

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Embodiment Construction

[0038]At present, the amplifiers in ultrafast lasers usually need to introduce a large number of lenses, and the convex or concave surfaces realize the bending of the beam. In this way, it is unavoidable to introduce more distortion to the whole structure, which will affect the laser quality of the amplified output. In addition, the structure of the laser amplifier is relatively large, which is inconvenient to install and use. In addition, the utilization rate of the pumping light is relatively low, and the pumping light cannot be fully utilized.

[0039] In view of the above problems, the inventor provides a novel laser amplifier structure after research. Wherein the laser gain medium has a rectangular cross-section and a very thin thickness of 1 mm or less. It has a compact structure and a higher utilization rate of pump light, and at the same time reduces the introduction of wavefront distortion, ensuring the beam quality after laser amplification.

[0040] In order to e...

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Abstract

The invention discloses a laser amplifier. The laser amplifier comprises a pump light path and a laser amplification light path; and the pump light path and the laser amplification light path also comprise a laser gain medium together. A folding light path in the laser amplifier enables the overall structural size of the amplifier to be reduced, and installation and use are convenient. The pump light passes through the laser gain medium twice, so that the utilization rate of the pump light is improved. In addition, a thermal lens imaging system is introduced into the laser amplifier, so that the wavefront distortion influence introduced by the device is reduced, and the beam quality of output laser is improved.

Description

technical field [0001] The present application relates to the field of optical technology, in particular to a laser amplifier. Background technique [0002] With the development of laser processing technology, laser is more and more used in the processing of metal, glass, sapphire, liquid crystal display (Liquid Crystal Display, LCD) panel, organic light-emitting diode (Organic Light-Emitting Diode, OLED) panel and other materials. Compared with traditional mechanical processing, laser processing has the characteristics of strong adaptability, clean processing, higher processing precision, and no contact. The requirements for laser processing technology are getting higher and higher. Compared with traditional nanosecond or even continuous lasers, ultrafast lasers generate less residual heat and are more suitable for fine processing. [0003] The hybrid amplifier based on the fiber seed master oscillator (Master Oscillator Power-Amplifier, MOPA) has been widely used in the i...

Claims

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Application Information

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IPC IPC(8): H01S3/081H01S3/08
CPCH01S3/0813H01S3/08059
Inventor 陆俊张国新袁涛马敬跃黄玉涛黄祝龙
Owner 北京盛镭科技有限公司
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