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Multi-wavelength narrow-linewidth all-solid-state laser used for ocean exploration

A laser and multi-wavelength technology, applied in the direction of lasers, laser parts, phonon exciters, etc., can solve the problems of low power and single output wavelength, achieve high conversion efficiency, high output pulse energy, and improve conversion efficiency.

Active Publication Date: 2018-04-27
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of single output wavelength and low power of the existing lasers used in the field of ocean detection, and provide a narrow line width all-solid-state laser that simultaneously includes 1064nm infrared light, 532nm green light, 355nm ultraviolet light and 486.1nm blue light Laser, and through the method of seed injection into the optical parametric oscillator, the spectral width of the blue light is controlled to less than 0.1nm, the structure is compact, the output energy is high, and it can meet various ocean detection needs

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  • Multi-wavelength narrow-linewidth all-solid-state laser used for ocean exploration

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[0023] The technology of the present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0024] figure 2 It is a schematic diagram of the optical path of the multi-wavelength narrow-linewidth all-solid-state laser used for ocean detection in the present invention, consisting of figure 2 It can be seen that the multi-wavelength narrow-linewidth all-solid-state laser used for ocean detection in the present invention consists of a fundamental frequency laser 1, a beam reduction lens assembly 2, a frequency doubling crystal 3, a dual-wavelength wave plate 4, a sum frequency crystal 5, a first light splitting mirror 6, second beam splitter 7, first beam expander lens assembly 8, half-wave plate 9, DFB seed laser 10, isolator 11, second beam expander lens assembly 12, dichroic mirror 13, first cavity mirror 14, second A parametric crystal 15, a s...

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Abstract

The invention provides a multi-wavelength narrow-linewidth all-solid-state laser used for ocean exploration, and belongs to the technical field of lasers. The output energy of the 1064nm pulse laser is fully utilized, and simultaneous output of infrared light, green light, ultraviolet light and blue light can be realized through the nonlinear crystal frequency conversion technology. The multi-wavelength narrow-linewidth all-solid-state laser has the characteristics of being multi-wavelength, narrow in linewidth, compact in structure, high in efficiency and high in energy and is particularly suitable for the field of ocean wind field measurement, ocean plotting, underwater target detection and underwater communication; and the output wavelength of the blue light is within the Fraunholer line (486.1nm) of the solar spectrum so that the performance of the application system can be effectively enhanced.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to a multi-wavelength narrow-linewidth all-solid-state laser for ocean exploration, the output laser includes 1064nm infrared light, 532nm green light, 355nm ultraviolet light and 486.1 wavelength at the Fraunhofer dark line wavelength of the sun nm blue light. Background technique [0002] Marine research is of great significance to human development. The seawater light transmission window is in the blue-green band of 450nm to 550nm. Therefore, using the blue-green laser in this band as a light source is an important means of existing ocean laser detection technology and underwater laser communication technology. At present, the most widely used laser light source for ocean exploration is the neodymium-doped yttrium aluminum garnet Nd:YAG laser with an output wavelength of 532nm, and the wavelength is relatively single. The study found that in the deep sea, the attenuation coefficient ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/109H01S3/108H01S3/08
CPCH01S3/08013H01S3/08086H01S3/1083H01S3/109
Inventor 马剑朱小磊陆婷婷
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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