Laser unstable resonator capable of outputting solid light beam and application of laser unstable resonator

An unsteady cavity and beam technology, applied in the field of laser unsteady cavity, can solve the problems of difficult design and high cost of oblique axis reflecting telescope, and achieve the effect of simple and convenient processing, low manufacturing cost and stable work

Inactive Publication Date: 2013-07-10
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Laser unstable resonator capable of outputting solid light beam and application of laser unstable resonator
  • Laser unstable resonator capable of outputting solid light beam and application of laser unstable resonator
  • Laser unstable resonator capable of outputting solid light beam and application of laser unstable resonator

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Effect test

Embodiment 1

[0057] like figure 1 As shown, the unstable cavity laser based on laser unstable cavity technology outputting a solid beam provided in this embodiment includes a laser body 1 , an inner conical annular reflector 501 , an outer conical reflector 601 and a precision displacement mechanism 7 . The laser body 1 includes a positive branch virtual confocal unstable cavity composed of a convex mirror 4 and a concave mirror 3 arranged oppositely.

[0058] Wherein, between the convex mirror 4 and the concave mirror 3 of the positive branch virtual confocal unstable cavity, an inner conical annular reflector 501 with an axial section vertex angle θ is provided, and the mirror surface of the inner conical annular reflector 501 is concave inward Conical shape, and the middle part of the mirror body is hollow, in the form of a hollow ring, so that when the light beam is transmitted from the convex mirror 4 to the concave mirror 3 in the resonant cavity, the edge of the light beam can pass ...

Embodiment 2

[0069] like figure 2 As shown, the unstable cavity laser based on laser unstable cavity technology outputting a solid beam provided in this embodiment includes a laser body 1 , an outer conical lens 502 , an inner conical lens 602 and a precision displacement mechanism 7 . The laser body 1 includes a positive branch virtual confocal unstable cavity composed of a convex mirror 4 and a concave mirror 3 arranged oppositely.

[0070] In this embodiment, the outer conical surface lens 502 is arranged behind the convex mirror 4. The mirror body of the lens 502 is columnar. One end face of the mirror body is a plane, and the other end face is an outwardly protruding conical surface. The vertex angle is θ', and its axis of rotational symmetry is on the same line as the optical axis of the unstable cavity. When the light beam is reflected outward by the concave mirror 3 in the resonant cavity, part of it is emitted to the convex mirror 4 and continues to oscillate in the resonant cav...

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Abstract

The invention discloses a laser unstable resonator capable of outputting a solid light beam. The laser unstable resonator comprises a laser body, an internal cone annular reflecting mirror and an external cone annular reflecting mirror, wherein the laser body comprises a convex mirror and a concave mirror, which are opposite to each other; the internal cone annular reflecting mirror is arranged between the convex mirror and the concave mirror; a reflecting mirror surface of the internal cone annular reflecting mirror is a concave conical surface; a mirror body of the internal cone annular reflecting mirror is a hollow annular body; the external cone annular reflecting mirror is arranged below an optical axis of the unstable resonator and opposite to the internal cone annular reflecting mirror; the reflecting mirror surface of the external cone annular reflecting mirror is a convex conical surface; and a connecting line of the center Q of the reflecting mirror surface of the external cone annular reflecting mirror and the center P of the reflecting mirror surface of the internal cone annular reflecting mirror is perpendicular to the optical axis of the unstable resonator. The invention also discloses application of the laser unstable resonator. By a device and a method provided by the invention, conversion of an annular light beam which is output by an unstable resonator laser can be realized by using reflecting optical elements, and a circular solid light beam can be output. The device provided by the invention is simple in structure and stable in operation.

Description

technical field [0001] The invention belongs to the technical field of high-power lasers, and in particular relates to a laser unstable cavity outputting a solid beam based on an extracavity beam shaping technology and an application thereof. Background technique [0002] High power lasers with high beam quality are very important in both industrial and military applications. For high-power lasers, the most important thing is 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 Laser output with high beam quality. 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 ensure that the optical components in the cavity can achieve high-power laser output without laser damage. [0003] The stable cavity can only be operated in the funda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/081
Inventor 陈培锋王英罗曦
Owner HUAZHONG UNIV OF SCI & TECH
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