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Multi-wavelength all-solid-state yellow-light laser

A multi-wavelength, all-solid-state technology, used in lasers, laser parts, phonon exciters, etc., can solve problems such as single wavelength, and achieve the effect of compact structure

Inactive Publication Date: 2016-06-01
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the shortcoming of the single wavelength of the current yellow Raman laser, and provides a compact, efficient and stable multi-wavelength all-solid-state yellow laser

Method used

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  • Multi-wavelength all-solid-state yellow-light laser

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Embodiment 1

[0011] Such as figure 1 As shown, the all-solid-state Raman frequency-doubled yellow laser of the present invention includes a pumping light source 1, an optical coupling system 2, an input mirror 3, a dual-polarization dual-wavelength Yb:GdAl 3 (BO 3 ) 4 Laser crystal 4, Q-switching element 5, KGd (WO 4 ) 2 Raman crystal 6, LBO nonlinear optical crystal 7, output mirror 8.

[0012] The pump light source is a semiconductor laser with a wavelength of 976nm. The coupling parameter of the optical coupling system is 1:1. The input mirror coating is 950-980 high-transparency film, 1040-1200nm and 550-600nm high-reflection film, Yb:GdAl 3 (BO 3 ) 4 The light transmission direction of the crystal is the b direction, and the c axis is placed in the horizontal direction. The Q-switching element can use electro-optic Q-switching, acousto-optic Q-switching or passive Q-switching, etc. Raman KGd(WO 4 ) 2 The crystal is placed such that the light-transmitting direction is the Np ax...

Embodiment 2

[0018] The optical path setting of the present embodiment is the same as embodiment 1, only by Yb:GdAl 3 (BO 3 ) 4 crystal or KGd(WO 4 ) 2 The crystal is rotated 90° about the axis of the light passing direction.

[0019] In this embodiment, the semiconductor pump spectrum light passes through the optical coupling system and then is focused inside the crystal through the input mirror to realize dual-polarization and dual-wavelength fundamental-frequency light with wavelengths near 1042nm and 1047nm. KGd(WO 4 ) 2 The crystals form Raman lasers with wavelengths of 1150nm and 1138nm respectively, and the laser outputs of 575nm, 569nm and sum frequency light 572nm are realized through nonlinear LBO crystals.

[0020] When the pumping energy of the above laser is 2W, the laser output of 142mW at 575nm, 189mW at 569nm and 54mW at 572nm is obtained.

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Abstract

The invention provides a multi-wavelength all-solid-state yellow-light laser. The multi-wavelength all-solid-state Raman frequency multiplication yellow-light laser comprises a pumping source, an optical coupling system and a resonant cavity, wherein the resonant cavity comprises an input mirror, a Yb:GdAl3(BO3)4 crystal, an Q-switched element, a KGd(WO4)2 Raman crystal, a nonlinear crystal and an output mirror arranged in sequence. The pumping source is used for pumping the dual-wavelength laser crystal Yb:GdAl3(BO3)4 and the Q-switched element to generate short-pulse dual-wavelength fundamental frequency optical oscillation, and then two kinds of multi-wavelength yellow-light laser output schemes are realized based on the characteristic that the KGd(WO4)2 crystal has two Raman displacement spectral lines; according to the first scheme, frequency multiplication lights with output wavelengths of 566nm, 578nm and 572nm are output; and according to the second scheme, frequency multiplication lights with output wavelengths of 575nm, 569nm and 572nm are output. The laser has the advantages of compact structure, stability and high efficiency, so that the shortcoming that the existing yellow-light laser has a single wavelength is overcome.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a first-order Stokes laser crystal that realizes two fundamental waves in the same cavity and outputs four wavelengths from a Raman crystal with two gain lines. Raman light, and the frequency-doubled light and sum-frequency light in the yellow band generated by the four-wavelength laser through the nonlinear crystal, realize the multi-wavelength laser with multi-wavelength yellow laser output. Background technique [0002] The laser in the yellow band is close to the most sensitive wavelength of the human eye (555nm). The laser radiation in this band has broad application prospects in biomedicine, space target detection and recognition, radar, laser display, chemistry and other fields. However, there is currently no suitable laser gain medium that can directly generate yellow laser light, so it can be seen that the generation of yellow laser light is a difficult problem in the laser field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/108H01S3/109H01S3/16H01S3/30
CPCH01S3/1086H01S3/109H01S3/1666H01S3/30
Inventor 游振宇孙益坚涂朝阳徐金龙朱昭捷王燕
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI