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Central part reconstruction method and device of unstable resonator laser annular beam

A ring beam and central part technology, applied in the field of reconstruction of the central part of the ring beam output by the unstable cavity laser, can solve the problems of high cost and difficult design of oblique axis reflecting telescope, and achieve low manufacturing cost, simple and convenient processing, The effect of job stability

Inactive Publication Date: 2010-08-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

However, since the output coupling mirror of the cavity is a knife-edge, and the output beam is a solid rectangle, in the transmission of strong infrared laser, it can only be emitted by oblique-axis reflective telescopes; and the design of oblique-axis reflective telescopes is difficult and expensive

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  • Central part reconstruction method and device of unstable resonator laser annular beam
  • Central part reconstruction method and device of unstable resonator laser annular beam
  • Central part reconstruction method and device of unstable resonator laser annular beam

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as figure 1 As shown, the reconstruction device for the central part of the output ring beam of the unstable cavity laser based on the extra-cavity beam shaping technology provided in this embodiment is mainly composed of the unstable cavity laser 1, the right-angled inner circular mesa ring mirror 301, and the right-angled outer conical surface reflector The mirror 501, the precision displacement mechanism 6 of the right-angle inner circular table-top annular reflector and the precision displacement mechanism 7 of the right-angle outer conical surface reflector are composed.

[0041] The right-angle inner circular mesa annular reflector 301 and the right-angle outer conical reflector 501 are metal reflectors with a rotationally symmetrical structure, which are easy to manufacture and can be directly processed by ultra-pre...

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Abstract

The invention provides a central part reconstruction method and a device of an unstable resonator laser annular beam. The method comprises: an annular beam output by an unstable resonator laser is guided by an inner round table surface annular reflecting mirror and is gradually concentrated towards the optical axis position of the laser; the light beam concentrated on the periphery of the optical axis is reguided by utilizing an external cone surface reflecting mirror to obtain a reshaped light beam output along the optical axis direction; and the relative position of the inner round table surface annular reflecting mirror and the external cone surface reflecting mirror along the optical axis direction is precisely adjusted to realize the circular solid reshaping light beam output along the optical axis direction. The device comprises the unstable resonator laser, the inner round table surface annular reflecting mirror, the external cone surface reflecting mirror, a precise displacement mechanism of the inner round table surface annular reflecting mirror and a precise displacement mechanism of the external cone surface reflecting mirror. Compared with the prior art, the method can utilize an extracavity optical element to change the annular beam output by the unstable resonator laser and obtain circular solid light beam output. The provided device has simple structure and stable operation.

Description

technical field [0001] The invention belongs to the technical field of beam shaping of high-power lasers, and in particular relates to a method and a device for reconstructing the central part of a ring beam output by an unstable cavity laser based on extracavity beam shaping technology. Background technique [0002] High power lasers with high beam quality are very important in both industrial and military applications! For high-power lasers, how to obtain the largest possible mode volume and good transverse mode discrimination ability to achieve high-power single-mode operation, so as to extract energy efficiently from the active medium while maintaining high beam quality Laser output is critical! In order to obtain high-power laser output, it is often necessary to use an active medium with a large volume and large lateral size to achieve high-power laser output under the premise of ensuring that the optical components in the cavity are not damaged by the laser. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09
Inventor 王英罗曦陈培锋
Owner HUAZHONG UNIV OF SCI & TECH
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