Duty ratio adjusting device of two-dimensional (2D) large-scale laser beam array

An adjustment device and large-scale technology, applied in optics, optical components, instruments, etc., can solve the problems of the theoretical limit of the output power of a single fiber laser, and achieve the effects of increased brightness, convenient adjustment, and simple and compact structure

Active Publication Date: 2014-09-03
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, there is a theoretical limit to the output power of a single fiber laser due to thermal effects, nonlinear effects, and end-face damage threshold limitations

Method used

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  • Duty ratio adjusting device of two-dimensional (2D) large-scale laser beam array
  • Duty ratio adjusting device of two-dimensional (2D) large-scale laser beam array

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Embodiment Construction

[0016] 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.

[0017] see first figure 1 , figure 1 It is a schematic diagram of a two-dimensional large-scale laser beam array duty ratio adjustment device of the present invention. As can be seen from the figure, the two-dimensional large-scale laser beam array duty ratio adjustment device of the present invention is composed of a coaxial convex corner cube 1 and a concave corner cube 2, the bottom surface of the convex corner cube 1, the convex corner cube The conical surface of the prism 1, the conical surface of the concave corner cube 2 and the bottom surface of the concave corner cube 2 are arranged in sequence along the optical axis, and the convex corner cube 1 or the concave corner cube 2 are placed in an adjustment device that moves along the optical axis. Institutional.

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Abstract

Provided is a duty ratio adjusting device of a 2D large-scale laser beam array. The device comprises a convex pyramid prism and a concave pyramid prism, wherein the convex pyramid prism and concave pyramid prism are arranged coaxially, the diameters of the two pyramid prisms are the same, the edge thickness of the two pyramid prisms are the same, and conical surfaces of the two pyramid prisms are complementary. The device can adjust the duty ratio of the 2D large-scale laser beam array, and further improve the brightness of far-field Airy points of coherent combination. The device has the advantages including wide duty-ratio adjustment range, convenient adjustment, simple and compact structure and high stability.

Description

technical field [0001] The invention relates to a high-power fiber laser coherent beam combination system, in particular to a two-dimensional large-scale laser beam array duty ratio adjustment device. Background technique [0002] With the development of laser application technology, the fields of space communication, laser weapons, material processing, remote sensing and lidar have put forward an urgent demand for high-power and high-beam quality lasers. Fiber lasers have the characteristics of compact structure, convenient thermal management, good beam quality and high conversion efficiency, and have been widely used in the field of high-power lasers. However, there is a theoretical limit to the output power of a single fiber laser due to thermal effects, nonlinear effects, and end-face damage threshold limitations. Therefore, combining multiple fiber lasers into an array to produce a single beam output can effectively solve the problems existing in single fiber lasers, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09
Inventor 周军杨依枫何兵刘厚康郑也胡曼
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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