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Cross-polarization dual laser for green wave band

A dual-wavelength laser, dual-wavelength laser technology, applied in the field of lasers, can solve the problems of low THz wave power and efficiency, and achieve the effect of improving power and efficiency

Inactive Publication Date: 2013-04-03
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

The present invention aims at the above problems existing in the prior art, and provides a high-power, simple-structured orthogonally polarized dual-wavelength laser with a dual-wavelength difference close to 10 nm, so as to solve the low power and efficiency when the difference-frequency technology generates THz waves question

Method used

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  • Cross-polarization dual laser for green wave band
  • Cross-polarization dual laser for green wave band

Examples

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example 1

[0015] figure 1 A first embodiment of the present invention is shown. The pump source 1 is a semiconductor laser with an output wavelength of 976nm. The pump source focusing system 2 uses two plano-convex mirrors to focus the laser light onto the laser crystal 4, which is doped with Yb 3+ Ionic 10% concentration of YCaO (BO 3 ) 3 The crystal is used as the laser gain medium, and the cut size is 3×3×3mm 3 crystal, the y-tangential direction of the crystal direction, the light-passing direction parallel to the b-axis, device polishing is performed on both sides of the light-passing direction, the laser crystal 4 is wrapped with indium foil, placed in a red copper block, and cooling water is passed through the red copper block. The water temperature is kept at 15-18°C. The input mirror 3 is a flat mirror, coated with an input film, and the film parameters are R>99.99 (1060-1090nm, 530-550nm) & T>95%976nm; the fundamental frequency light is cut by a non-critical matching angl...

example 2

[0017] figure 2 The second embodiment of the present invention is shown. Compared with the device of the first experimental mode, the plane output mirror is placed at the position of 5, and its film parameters are unchanged, while the LBO second-order nonlinear optical crystal device is placed at the position of 6 position, and the rest of the parameters remain unchanged.

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Abstract

The invention provides a cross-polarization dual laser for green wave band and relates to the field of lasers. The laser adopts a Yb:YCaO(BO3)3 crystal as a laser gain medium; a semiconductor laser or other light sources is / are taken as a pumping source; an LBO (lithium triborate) with the non-critical phase matching angle is taken as a frequency multiplication material; and the green wave band dual laser output is obtained by the frequency multiplied Yb:YCaO(BO3)3 crystal cross-polarization dual lasers generated in a cavity and out of the cavity.

Description

technical field [0001] The invention relates to the field of lasers. Background technique [0002] Dual-wavelength laser can be widely used in optical communication, photodynamic medical treatment, optical computing, nonlinear frequency conversion, environmental monitoring, laser remote sensing, lidar and spectroscopy, etc. Linear optical difference frequency technology performs difference frequency on dual-wavelength lasers to generate terahertz waves. The interaction between terahertz waves and matter contains rich physical and chemical information, and has unique and excellent characteristics such as coherence, low energy, high penetration, and no damage. Basic and applied research fields such as inspection, medical imaging, environmental monitoring, food inspection, radio astronomy, satellite communication, and weapon guidance all have great scientific research value and broad application prospects, but are still an area of ​​electromagnetic radiation that has not yet b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/109
Inventor 涂朝阳游振宇朱昭捷王燕李坚富
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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