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Red and green laser based on laser crystal, frequency doubling crystal and self-frequency-doubling crystal

A technology of laser crystals and frequency doubling crystals, applied in the field of lasers, to achieve the effects of compact structure, good stability, and convenient switching

Active Publication Date: 2014-04-30
青岛镭视光电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiency and important demand of current red and green laser, the present invention provides a red and green laser based on laser crystal, frequency doubling crystal and self frequency doubling crystal

Method used

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  • Red and green laser based on laser crystal, frequency doubling crystal and self-frequency-doubling crystal

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Effect test

Embodiment 1

[0033] A red-green laser based on laser crystals, frequency-doubling crystals and self-frequency doubling crystals, including a dual-wavelength pump source 1, a focusing lens 2, a laser crystal 3, a frequency doubling crystal 4 and a self-frequency doubling laser crystal 5, along the optical path Arranged in order. The laser crystal, the frequency doubling crystal, and the self-frequency doubling laser crystal are glued together in sequence. The above gluing method can adopt the existing technology; the ultraviolet glue can be evenly covered on the gluing surface, and after the gluing surface of the laser crystal and the self-frequency doubling laser crystal is bonded, it is cured by ultraviolet light irradiation.

[0034] like figure 1 shown.

[0035] The dual-wavelength pump source 1 is a semiconductor laser (LD) that produces 796nm and 808nm lasers and is placed on the focal length of the focusing lens 2. The focal length of the focusing lens 2 is 5mm. The laser crystal 3...

Embodiment 2

[0042] A red-green laser based on laser crystals, frequency-doubling crystals and self-frequency doubling crystals, including a dual-wavelength pump source 1, a focusing lens 2, a laser crystal 3, a frequency doubling crystal 4 and a self-frequency doubling laser crystal 5, along the optical path Arranged in order.

[0043] like figure 1 shown.

[0044] The dual-wavelength pump source 1 is a semiconductor laser (LD) that produces 796nm and 808nm lasers and is placed on the focal length of the focusing lens 2. The focal length of the focusing lens 2 is 5mm. The laser crystal 3 is placed on the focal length of the focusing lens 2.

[0045]The laser crystal 3 is a neodymium-doped yttrium vanadate crystal (Nd:YVO4); the cutting direction of the laser crystal Nd:YVO4 crystal is along the crystallographic axis a direction, and the length of the light-passing direction is 2mm; the laser crystal The doping concentration of neodymium ions in Nd:YVO4 is 1at%; the laser crystal near th...

Embodiment 3

[0051] A red-green laser based on laser crystals, frequency-doubling crystals and self-frequency doubling crystals, including a dual-wavelength pump source 1, a focusing lens 2, a laser crystal 3, a frequency doubling crystal 4 and a self-frequency doubling laser crystal 5, along the optical path Arranged in order.

[0052] like figure 1 shown.

[0053] The dual-wavelength pump source 1 is a semiconductor laser (LD) that produces 796nm and 808nm lasers and is placed on the focal length of the focusing lens 2. The focal length of the focusing lens 2 is 5mm. The laser crystal 3 is placed on the focal length of the focusing lens 2.

[0054] The laser crystal 3 is a neodymium-doped yttrium vanadate crystal (Nd:YVO4); the cutting direction of the laser crystal Nd:YVO4 crystal is along the crystallographic axis a direction, and the length of the light-passing direction is 1 mm; the laser crystal The doping concentration of neodymium ions in Nd:YVO4 is 2at%; the laser crystal near ...

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Abstract

The invention relates to a red and green laser based on a laser crystal, a frequency doubling crystal and a self-frequency-doubling crystal. The red and green laser comprises a dual-wavelength pumping source, a focusing lens, the laser crystal, the frequency doubling crystal and the self-frequency-doubling crystal, wherein the dual-wavelength pumping source, the focusing lens, the laser crystal, the frequency doubling crystal and the self-frequency-doubling crystal are sequentially arranged along an optical path. The light transmitting surface of the laser crystal, the light transmitting surface of the frequency doubling crystal and the light transmitting surface of the self-frequency-doubling crystal are plated with dielectric films, and the laser crystal, the frequency doubling crystal and the self-frequency-doubling crystal are sequentially combined together through the light transmitting surfaces. The laser crystal is a neodymium-doped yttrium vanadate crystal. The frequency doubling crystal is a potassium titanyl oxygenic phosphate crystal. The self-frequency-doubling crystal is a neodymium-doped yttrium calcium oxyborate crystal or a neodymium-doped gadolinium calcium oxyborate crystal, the self-frequency-doubling crystal is cut in the light transmitting direction, and the cutting direction is a self-frequency-doubling direction where 530 nm or 545 nm laser light is generated. The red and green laser is formed by gluing the dual-wavelength pumping source, the laser crystal, the frequency doubling crystal and the self-frequency-doubling crystal and is compact in structure and good in stability; in the optical path, red laser light and green laser light are output respectively and do not interfere with each other, and switching is convenient.

Description

technical field [0001] The invention belongs to the technical field of lasers, in particular to a red-green laser based on laser crystals, frequency-doubling crystals and self-frequency-doubling crystals. Background technique [0002] In recent years, more and more fields such as interference rainbow holography, fine laser spectroscopy, differential absorption lidar (DIAL), laser medicine, and laser display have shown the demand for dual-wavelength lasers. All-solid-state dual-wavelength lasers have The advantages of compact structure, small size, high power, and the coverage of the wavelength band are particularly important, making all-solid-state dual-wavelength lasers more advantageous than traditional dual-wavelength lasers in some application fields. It has become a popular research topic in the world. 671nm red light and 532nm (or 545nm) green laser are two important wavelength bands in visible light lasers, and their applications in the fields of medical treatment, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/16H01S3/109
Inventor 马长勤于浩海韩学坤张怀金王继扬路庆明严冬
Owner 青岛镭视光电科技有限公司
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