nd:ylf laser quadruple frequency device and debugging method

A quadruple frequency and laser technology, applied in the field of quadruple frequency laser, can solve the problems of walk-off effect, phase mismatch, etc., and achieve the effect of avoiding walk-off effect, eliminating central wavelength drift, and high precision

Active Publication Date: 2018-11-20
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the critical phase matching method has high requirements on angle and stability, and has problems such as walk-off effect and phase mismatch caused by input light divergence

Method used

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  • nd:ylf laser quadruple frequency device and debugging method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the examples and accompanying drawings, but the protection scope of the present invention should not be limited thereto.

[0022] see figure 1 , figure 1 It is a schematic diagram of the device for generating quadruple frequency laser in the present invention. It can be seen from the figure that the Nd:YLF laser quadruple frequency device of the present invention includes a Nd:YLF fundamental frequency laser 1, and along the laser output direction of the Nd:YLF fundamental frequency laser 1 are the double frequency crystal 2 and the first double frequency laser successively. Color separation film 3 and second double frequency laser color separation film 4, quadruple frequency crystal 5, first quadruple frequency laser separation film 9 and second quadruple frequency laser separation film 10, the first double frequency The laser color separation film 3, the second double frequency laser separatio...

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Abstract

The invention discloses an Nd:YLF laser frequency quadruplicating device and a debugging method. The Nd:YLF laser frequency quadruplicating device comprises an Nd:YLF fundamental frequency laser, a frequency doubling crystal, a first frequency doubling laser color separation film, a second frequency doubling laser color separation film, a frequency quadruplicating crystal, a first frequency quadruplicating laser color separation film and a second frequency quadruplicating laser color separation film are sequentially arranged along the laser output direction of the Nd:YLF fundamental frequency laser, and the first frequency doubling laser color separation film, the second frequency doubling laser color separation film, the first frequency quadruplicating laser color separation film and the second frequency quadruplicating laser color separation film form 45 degrees of angles with the optical path respectively; temperature of the frequency quadruplicating crystal is controlled by a temperature controller. The Nd:YLF laser frequency quadruplicating device has the advantages of stability, convenience and fastness in the debugging method, and high frequency quadruplicating conversion rate.

Description

technical field [0001] The invention relates to a quadrupling frequency laser, in particular to a Nd:YLF laser quadrupling frequency device and a debugging method, which have the advantages of stable device, convenient and fast debugging, and high quadrupling frequency conversion efficiency. Background technique [0002] Compared with traditional infrared and visible band lasers, the quadrupled frequency laser has a shorter wavelength, not only can obtain a smaller focused spot, but also has a higher absorption coefficient on some special materials, so the quadrupled frequency laser can be used It is used in the processing of silicon and ceramic materials, scribing of sapphire crystals, drilling holes in the copper layer of multi-layer PCB circuit boards, etc. Quadruple frequency laser is widely used in fluorescence detection, fine processing and photolithography due to its advantages such as high single-photon energy and small diffraction effect. In addition, quadruple fre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/109
Inventor 林尊琪姜秀青朱宝强季来林刘栋惠宏超李大为
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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