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Intracavity frequency doubling ultraviolet laser with fixed pulse width and operating method

An ultraviolet laser and intracavity frequency doubling technology, applied in the field of lasers, can solve the problems of low pump power and low light output energy, and achieve the effect of high energy output

Pending Publication Date: 2018-08-31
国科世纪激光技术(天津)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the biggest problem with doing this is that the pump power is low at low repetition frequency, and the output light energy is low, so it becomes meaningless

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  • Intracavity frequency doubling ultraviolet laser with fixed pulse width and operating method

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0016] The end-pumped ultraviolet laser with constant pulse width provided by this application uses intracavity frequency doubling as the frequency doubling method. The overall design scheme is as follows figure 1 shown.

[0017] The present invention provides a fixed pulse width intracavity frequency doubling ultraviolet laser, including a first dual-wavelength reflector A1, a second dual-wavelength reflector A2, a plano-convex lens B, an acousto-optic Q switch C, a first laser cavity mirror D, Laser crystal E,...

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Abstract

The invention discloses an intracavity frequency doubling ultraviolet laser with fixed pulse width and an operating method. The intracavity frequency doubling ultraviolet laser with fixed pulse widthcomprises a first dual-wavelength mirror, a second dual-wavelength mirror, a plano-convex lens, an acousto-optic switch, a first laser endoscope, a laser crystal, a second laser endoscope, a laser mirror, a two-frequency doubling crystal and a three-frequency doubling crystal, wherein the first dual-wavelength mirror is placed on an electric moving platform; and the cavity length of the laser is changed by changing the position of the first dual-wavelength mirror. The pulse width is constant, namely the constantness of the pulse width can be guaranteed within a certain frequency range, and simultaneously the highest pumping power can be used no matter under low repetition frequency or high repetition frequency, so that the highest energy output can be realized no matter under low repetition frequency or high repetition frequency.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an intracavity frequency-doubling ultraviolet laser with a fixed pulse width and an operation method. Background technique [0002] In recent years, the application of high-power and high-beam-quality lasers in various material processing industries has developed rapidly. There are many types of lasers: according to different structures, they are divided into gas lasers, solid-state lasers, fiber lasers, and semiconductor lasers, which have become the mainstream of supporting material processing industries; Its wavelength range can cover from far infrared to deep ultraviolet (200nm~20um). Different industries will also use different power ranges, different beam qualities, different laser output methods, etc. In the fields of processing thin film non-metallic materials, semiconductor wafer cutting, plexiglass cutting, drilling, marking and other fields, in order to reduce the influ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/109H01S3/117
CPCH01S3/109H01S3/117
Inventor 朱光王家赞
Owner 国科世纪激光技术(天津)有限公司