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Single-frequency high-order vortex laser direct generation device

A laser direct and generation device technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problem that there are few methods for effectively generating single-frequency high-order vortex light, so as to ensure single-frequency laser output and output spot good quality effect

Pending Publication Date: 2021-12-31
广东镭泰激光智能装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are already some methods to realize the generation of high-order vortex light, but there are still few methods for effectively generating single-frequency high-order vortex light. to report

Method used

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  • Single-frequency high-order vortex laser direct generation device

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Embodiment

[0026] see figure 1 An embodiment of the present invention provides a device for directly generating single-frequency high-order vortex laser, including a pump source 1 , a coupling fiber 2 , a pump light coupling element 3 and a laser resonator 4 . Wherein, the pump light coupling element 3 is made up of a collimating mirror 31 with a focal length of 50 mm and a focusing mirror 32 with a focal length of 60 mm. The collimating mirror 31 and the focusing mirror 32 are convex mirrors. The collimating mirror 31 and the focusing mirror 32 The relative setting of the plane. The laser resonator 4 is composed of a resonator input mirror 41, a laser crystal 42, a filter element 43 and an output point defect mirror 44. The resonator input mirror 41 is a concave mirror with a radius of curvature of 50mm, and the concave surface of the resonator input mirror 4 faces the laser Crystal 42, and the concave surface is coated with the first dielectric film that is highly transparent (transmi...

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Abstract

The invention discloses a single-frequency high-order vortex laser direct generation device, which comprises a pumping source, a pumping light coupling element and a laser resonant cavity, and is characterized in that the laser resonant cavity is composed of a resonant cavity input mirror, a laser crystal, a filter element and an output point defect mirror; the pumping source is used for providing pumping laser; the pump light coupling element is used for focusing the laser generated by the pump source on the resonant cavity input mirror; the resonant cavity input mirror is used for receiving the light beam from the pump light coupling element and outputting the light beam to the laser crystal. The laser crystal obtains single-frequency laser through the filtering element and outputs the single-frequency laser to the output point defect mirror; and the output point defect mirror is used for generating high-order vortex laser output. By forming a concave-flat laser resonant cavity structure, the quality of output light spots is good, the length of the resonant cavity can be adjusted to a very short size, less longitudinal mode output is ensured, the output point defect mirror can ensure generation of high-order vortex laser, and single-frequency laser output can be ensured by inserting an etalon (filter element) into the laser resonant cavity.

Description

technical field [0001] The invention relates to a vortex laser generating device, in particular to a single-frequency high-order vortex laser direct generating device. Background technique [0002] Vortex lasers are used in optical communication, quantum entanglement, new nonlinear optical effects (such as spin Hall effect, rotating optical Doppler effect, nonlinear topological transformation), micro-nano machining, super-resolution imaging, optical tweezers and high-resolution imaging. High-precision coherent measurement and other fields have important application value; moreover, many applications of vortex light require high-order vortex light sources. On the other hand, compared with multi-longitudinal mode lasers, single-frequency (that is, single longitudinal mode) lasers have better coherence, and the advantages of low noise are also required by many applications. At present, there are already some methods to realize the generation of high-order vortex light, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08
CPCH01S3/08022H01S3/08027H01S3/08031
Inventor 肖磊徐斌周伦滨
Owner 广东镭泰激光智能装备有限公司
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