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Ring traveling-wave cavity multi-output light beam coherence synthesizing device

A technology of coherent synthesis and traveling wave cavity, used in laser devices, optics, light guides, etc., can solve the problems of small beam spot, high processing cost, complex structure, etc., and achieve the effect of reducing loss and increasing stability.

Inactive Publication Date: 2006-10-11
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

In this prior art, there are forward mode and reverse mode at the same time, the fatal flaw is that the coherence of the output laser is strictly limited by the "lock length", and the range of cavity length misalignment is only 1 / 6 wavelength at most, and this structure The beam spot injected into another laser medium is small, which is not suitable for solid-state lasers, and the structure is quite complicated. It is difficult to add more laser media to increase multiple outputs.
In short, the existing technology has strict requirements on the change of cavity length, it is difficult to add more output beams, the process is complex, the processing cost is high, and the level of practicality is low

Method used

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  • Ring traveling-wave cavity multi-output light beam coherence synthesizing device
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  • Ring traveling-wave cavity multi-output light beam coherence synthesizing device

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention should not be limited thereby.

[0023] see first figure 1 , as can be seen from the figure, embodiment 1 of the multi-output beam coherent combination device of the annular traveling wave cavity of the present invention includes two Nd:YAG slab laser media 2, 6, which are pumped perpendicular to the side of the media after passing through the shaping system with the LD array , the other two sides conduct heat through a copper block with cooling water; two output mirrors 4 and 10 are placed perpendicular to the optical axis at 45°, one side of the output mirror is coated with a 1064nm anti-reflective coating, and the other side is coated with a 1064nm reflective coating, which is opposite to the 45° The reflectivity is 60%; two compression mirrors 5 and 11 are placed in the direction opposite to the output beam and perpendicular...

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Abstract

The disclosed ring traveling-wave cavity multiple output beam coherent synthesis device comprises: arranging multiple laser units in one ring cavity as one laser maser, forcing by compress mirror the laser unidirectional transmitting and forming the traveling-wave cavity; outputting the laser beam with multiple outgoing mirrors. This invention is convenient to adjustment and process, and can satisfy requirement in industry and scientific research.

Description

technical field [0001] The invention relates to a laser coherent beam combining device, in particular to a ring traveling wave cavity multi-output beam coherent combining device. Background technique [0002] High-power and high-beam-quality laser sources have important applications in industry and scientific research. However, due to the limitations of crystal size, thermal effects, saturation effects, and damage thresholds, the two conditions of high power and high beam quality must be met at the same time. very difficult. Laser coherent combining provides the possibility to solve this problem. Theoretically speaking, if N lasers with the same power are coherently combined, the far-field peak intensity of a single N 2 , the far-field divergence angle is 1 / N of a beam. Therefore, coherent beam combining can not only improve the far-field power density but also maintain high beam quality, it is an effective way to solve the limitations of current laser sources. There are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00B23K26/064G02B6/00G02F1/35H01S3/067H01S3/083H01S3/23
Inventor 唐前进胡企铨
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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