A light beam conversion device based on optical microcavity regulation
An optical microcavity and beam conversion technology, applied in the optical field, can solve the problems of difficult miniaturization, weak controllability, poor adjustment flexibility, etc., and achieve the effects of enhanced controllability, high adjustment flexibility, and poor adjustment flexibility
Active Publication Date: 2018-04-27
HANGZHOU DIANZI UNIV
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Problems solved by technology
In the prior art, there is a beam conversion method, see the paper "Creation of a needle of longitudinally polarized light in vacuum using binary optics" on the 2008 volume 501-505 pages of the "Nature Photonics" journal, this method has certain Advantages, but there are still essential deficiencies, the optical frequency change cannot be realized, the system is complex, and the integration level is low, it is difficult to miniaturize, it is not easy to realize, the controllability is not strong, and the degree of modularization is not high
There is also a light field distribution conversion device in the prior art, see the invention patent "A Vector Circular Beam Shaping Device", the patent number is ZL200810122104.4, the date of authorization announcement: September 29, 2010, although this invention It has certain advantages, but there are essential deficiencies: using the principle of conical surface reflection and polarizing devices to regulate the polarization distribution of incident light, the system structure is complex, the adjustment flexibility is poor, the function is not easy to expand, and the phase adjustment cannot be realized fundamentally. field frequency control
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[0020] The present invention will be further described below in conjunction with drawings and embodiments.
[0021] Such as figure 1 As shown, a light beam conversion device based on optical microcavity control includes: a first optical reflection element 2, a hollow photonic crystal fiber 3, a second optical reflection element 6, an optical microcavity 4, an optical gain medium 5, and a hollow photonic crystal fiber The two ends of 3 are respectively provided with a first optical reflection element 2 and a second optical reflection element 6; the hollow photonic crystal fiber 3 contains a section of near-field light exposure area 301, and the optical microcavity 4 is arranged in the near-field light exposure area 301, with and There is a mutual optical field coupling effect in the hollow-core photonic crystal fiber 3; the optical gain medium 5 is arranged at the inner hollow of the hollow-core photonic crystal fiber 3, such as figure 2 shown.
[0022] In this embodiment, t...
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The invention relates to a light beam conversion device based on optical microcavity control. The prior art has complex structure, weak controllability, and difficult expansion of functions. The present invention is based on the principle of mutual coupling between the optical microcavity and the hollow photonic crystal fiber. The inner hollow of the hollow photonic crystal fiber is provided with an optical gain medium, and optical reflection elements are provided at both ends to form a return cavity. The hollow photonic crystal fiber contains a section of near-field light The exposed area; the optical microcavity is set in the exposed area of near-field light; the incident light field is incident through one end of the hollow photonic crystal fiber, and the beam conversion is realized due to the comprehensive effect of the optical gain medium, the hollow photonic crystal fiber, and the optical microcavity on the incident light field , the output beam emerges from the other end of the hollow-core photonic crystal fiber. The invention has the characteristics of simple system, easy realization, high integration, easy miniaturization, adjustable multi-optical parameters, strong adjustability, high adjustment flexibility, easy function expansion and the like.
Description
technical field [0001] The invention belongs to the field of optical technology, and relates to a beam conversion device, in particular to a beam conversion device based on optical microcavity control, which is mainly used in material analysis, optical processing, optical microscopy, optical manipulation, photoelectric detection, information communication, Beam switching in environmental monitoring, process control, etc. Background technique [0002] Beam conversion requirements widely exist in the fields of material analysis, optical processing, optical microscopy, optical manipulation, photoelectric detection, information communication, environmental monitoring, process control, etc. For example, in the field of optical processing, the wavefront phase of the incident beam can be changed In the field of photoelectric detection, the frequency doubling crystal can be used to change the optical frequency to achieve specific frequency spectrum detection and analysis. In the pr...
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IPC IPC(8): H01S3/10H01S3/08
Inventor 逯鑫淼林君辛青张辉朝
Owner HANGZHOU DIANZI UNIV