Solid sum-frequency sodium guide star amplified spontaneous emission light source and sum-frequency light output method

A technology of amplifying spontaneous emission and sodium guide star, applied in the field of laser and astronomical adaptive optics, it can solve the problem of low return light efficiency, and achieve the effect of suppressing saturation effect, high brightness and stable output

Pending Publication Date: 2018-05-18
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, in practical applications, affected by the discrete longitudinal mode spectrum of traditional lasers, time-domain relaxation spikes, and the spatial distribution characteristics of coherent speckle light intensity, the high-power narrow-linewidth sodium guide star laser source resonantly excites atmospheric sodium atoms The light return efficiency of the generated fluorescence is still restricted by the saturation effect, the light return efficiency is low, and there is no complete solution at home and abroad

Method used

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  • Solid sum-frequency sodium guide star amplified spontaneous emission light source and sum-frequency light output method
  • Solid sum-frequency sodium guide star amplified spontaneous emission light source and sum-frequency light output method

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Embodiment 1

[0029] Such as figure 1 As shown, a solid and frequency sodium guide star amplifies spontaneous emission light source, including solid 1064nm fundamental frequency light source 1, solid 1319nm fundamental frequency light source 2, plane high reflection mirror 3, beam combining mirror 4, converging concave high reflection mirror 5, and Frequency crystal 6, collimating concave high reflection mirror 7 and beam splitter 8, wherein the solid 1064nm fundamental frequency light source 1 is used to output 1064nm fundamental frequency light, and the solid 1319nm fundamental frequency light source 2 is used to output transmission optical path parallel to 1064nm fundamental frequency light 1319nm fundamental frequency light, and at least one of the solid 1064nm fundamental frequency light source 1 and the solid 1319nm fundamental frequency light source 2 is an ASE light source. Meanwhile, the solid 1064nm fundamental frequency light source 1 adopts Nd:YAG, Nd:YVO 4Or the optical fiber ...

Embodiment 2

[0041] The same part of this embodiment and Embodiment 1 will not be described again, the difference is:

[0042] The solid 1064nm fundamental frequency light source 1 is a Nd:YAG quasi-continuous 100 μs long pulse ASE light source, which is made by adopting the technical scheme disclosed as a multi-pass amplification super fluorescent light source based on slat angle gating (application number is 201611254891.9), Its line width is 1pm. The solid 1319nm fundamental frequency light source 2 is a Nd:YAG quasi-continuous single longitudinal mode laser light source with a linewidth of 1pm. The incidence angles of the plane high reflection mirror 3, the beam combining mirror 4 and the beam splitting mirror 8 are all 45°, and the angle between the front mirror surface and the rear mirror surface of the three is 5°, so as to eliminate the possible etalon effect. The radius of curvature of the converging concave high-reflection mirror 5 and the collimating concave high-reflection mir...

Embodiment 3

[0045] The same part of this embodiment and embodiment two will not be repeated, the difference is:

[0046] The solid 1064nm fundamental frequency light source 1 and the solid 1319nm fundamental frequency light source 2 are both Nd:YAG quasi-continuous 100μs long pulse ASE light sources with a line width of 1pm, and the output 589nm and frequency light 10 has a continuous spectrum structure.

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Abstract

The invention belongs to the technical field of laser and astronomical self-adaptive optics and relates to a solid sum-frequency sodium guide star amplified spontaneous emission light source and a sum-frequency light output method. The solid sum-frequency sodium guide star amplified spontaneous emission light source comprises a solid 1064nm fundamental-frequency light source, a solid 1319nm fundamental-frequency light source, a planar high-reflectivity mirror, a beam combiner, a convergence concave high-reflectivity mirror, a sum-frequency crystal, a collimation concave high-reflectivity mirror and a beam splitter. By adoption of the solid 1064nm fundamental-frequency light source and the solid 1319nm fundamental-frequency light source, 589nm sum-frequency light is generated through nonlinear sum-frequency generation; in addition, at least one of the solid 1064nm fundamental-frequency light source and the solid 1319nm fundamental-frequency light source is an amplified spontaneous emission light source, the 589nm sum-frequency light is promoted to have advantages of continuous spectrums, freeness of relaxation oscillation, low coherence and stability in output, atmosphere sodium atoms can be excited and used completely, a saturation effect is effectively suppressed, high-brightness high-efficiency sodium guide star light echo can be realized, and accordingly applications of white-light atom cooling, gas detection and the like can be met while development requirements of the astronomical self-adaptive optics are met.

Description

technical field [0001] The invention belongs to the technical field of laser and astronomical adaptive optics, and in particular relates to a solid sum-frequency sodium guide star amplifying spontaneous radiation light source and a sum-frequency light output method. Background technique [0002] With the development of laser technology, since the 1980s, the world's ground-based astronomical telescopes have entered the era of adaptive optics telescopes. The adaptive optics correction of the telescope needs to use the bright star near the observation target as the guide star to obtain the wavefront distortion information caused by the atmosphere, and then control the deformable mirror to compensate the wavefront distortion through real-time feedback, so as to realize the observation of the target near the guide star. high-resolution imaging. The laser guide star technology was first proposed by the United States, that is, the use of high-power lasers to generate high-brightne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02B27/10G02F1/355
CPCG02B27/1006G02F1/3501G02F1/3551G02F2203/18G02F1/3503
Inventor 陈小明鲁燕华许夏飞张雷任怀瑾胡浩童立新庞毓万敏石勇刘芳
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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