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Fabry-Perot (F-P) cavity and laser using same

A technology of F-P and lasers, applied in the field of lasers, can solve the problems of poor stability of F-P cavity, easy to be disturbed by the outside world, too large volume, etc., and achieve the effect of reducing the possibility of mode hopping, not easy to be disturbed by the outside world, and small in size

Inactive Publication Date: 2012-01-11
NAT INST OF METROLOGY CHINA
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  • Abstract
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to propose a F-P cavity and a laser using the F-P cavity to solve the problems of poor stability of the existing folded F-P cavity, easy to be disturbed by the outside world, excessive volume and complex system.

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  • Fabry-Perot (F-P) cavity and laser using same
  • Fabry-Perot (F-P) cavity and laser using same
  • Fabry-Perot (F-P) cavity and laser using same

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0030] The applicant has found in long-term research and practice that the F-P cavity of the discrete component is easily disturbed and affected by external audio, mechanical vibration and temperature changes, the volume of the cavity is relatively large, and the stability of the system is relatively poor. At the same time, non-confocal F-P cavities are more complicated in operation than confocal F-P cavities because they need to perform mode matching for different input beams. When a good match is not achieved, multimode is prone to occur, which increases the possibility of mode hopping and affects the tracking and locking of the laser. The one-time folding confocal cavity needs to process two spherical mirrors to form a...

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Abstract

The invention discloses a Fabry-Perot (F-P) cavity. The F-P cavity is a folded confocal cavity which is integrally formed by a single optical element, wherein the folded confocal cavity is provided with three reflecting surfaces; a first reflecting surface is a plane and is used as an input and output coupled surface; a second reflecting surface is a plane; a third reflecting surface is a spherical surface; and the curvature radius of the spherical surface is half of the geometrical length of a round trip of a light ray in the folded confocal cavity. The invention also discloses a laser based on the F-P cavity. Through the technical scheme, the problems that the conventional F-P cavity has poor stability, is easily interfered by surroundings, has a too large volume and a complicated system and the like are solved.

Description

technical field [0001] The invention relates to laser technology, in particular to a Fabry-Perot (F-P) cavity and a laser using the F-P cavity. Background technique [0002] F-P cavity is an important tool in optics and laser research, and can be applied in optical devices such as external cavity semiconductor lasers and monolithic solid-state lasers. [0003] The back-incident reflected light of the folded F-P cavity has the opposite spectral structure to that of the F-P cavity, which can provide narrow linewidth optical feedback. Folded F-P cavities are currently constructed from discrete components. For example K. The structures proposed by I. Ernsting, R.-H. Rinkleff, S. Schiller, and A. Wicht, such as figure 1 shown. The folded F-P cavity (CAV) consists of a coupling mirror 101 and two mirrors 102,103. Wherein, the coupling mirror 101 is also used as a folding mirror. The incident light enters the folded F-P cavity from the coupling mirror 101, and after being re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/10H01S5/065H01S5/40
Inventor 臧二军赵阳曹建平李烨方占军
Owner NAT INST OF METROLOGY CHINA
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