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Liquid-crystal tunable laser with echo wall mode and distribution feedback emission and preparing method thereof

A technology of whispering gallery mode and laser tuning, which is applied to lasers, laser parts, phonon exciters, etc., can solve the problems of difficulty in practicality, unstable droplet structure, low emission output efficiency, etc., and achieves the characteristics of temperature tuning, Easy temperature tuning characteristics, effect of improving emission efficiency

Active Publication Date: 2017-10-27
HARBIN ENG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the dye-doped cholesteric liquid crystal laser emission output efficiency is low based on the glass substrate structure and the liquid crystal droplet structure, and the droplet structure is not stable enough, making it difficult to be practical

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  • Liquid-crystal tunable laser with echo wall mode and distribution feedback emission and preparing method thereof
  • Liquid-crystal tunable laser with echo wall mode and distribution feedback emission and preparing method thereof

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following implementation.

[0020] The invention provides a liquid crystal tunable laser with both whispering gallery mode and distributed feedback emission and a preparation method thereof, belonging to the technical field of tunable lasers. A liquid crystal tunable laser with whispering gallery mode and distributed feedback emission according to the present invention includes a capillary glass substrate 1 , an optically controlled alignment film 2 , a cholesteric liquid crystal 3 , and a laser material 4 . The photo-control alignment film 2 is distributed axially symmetrically and uniformly, and the space surrounded by the photo-control alignment...

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Abstract

The invention provides a liquid-crystal tunable laser with echo wall mode and distribution feedback emission and a preparing method thereof, and belongs to the technical field of tunable lasers. The liquid-crystal tunable laser with echo wall mode and distribution feedback emission comprises a capillary tube glass matrix, light-control alignment films, cholesteric liquid crystals and laser materials. The light-control alignment films are arranged on the inner side of the capillary tube glass matrix and are arranged in an axial-symmetry mode, and the cholesteric liquid crystals and the laser materials are arranged in defined space. According to the liquid-crystal tunable laser, laser emission of dye-doped cholesteric liquid crystals is achieved in the capillary tube glass matrix, and emission considers distribution feedback laser emission and echo wall mode laser emission at the same time; structural parameters such as the inner diameter of a capillary tube, the thickness of the light-control alignment films and the dye-doped cholesteric liquid crystals are optimized, the emission efficiency of the cholesteric liquid crystal laser can be improved, and the liquid-crystal tunable laser has the quite-good temperature-tunable characteristics.

Description

technical field [0001] The invention relates to a liquid crystal tunable laser with whispering gallery mode and distributed feedback emission and a preparation method thereof, belonging to the technical field of tunable lasers. Background technique [0002] Tunable lasers can continuously change the laser output wavelength within a certain range, and are widely used in fields such as spectroscopy, medicine, information processing and communication. Solid-state tunable lasers have the advantages of compact structure and durability, but the tuning time is long; semiconductor lasers have the advantages of high conversion efficiency, small size, light weight, and direct modulation, but the laser performance is greatly affected by temperature. The chromaticity and coherence are poor; the fiber tunable laser output laser has a large tuning range, but the temperature stability is poor. Liquid crystal tunable lasers have the characteristics of wide wavelength tuning range from near...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/137G02F1/1337H01S3/106
CPCG02F1/132G02F1/133788G02F1/13718H01S3/1065
Inventor 刘永军尹向宝徐勇龙思邦侯天文孙伟民
Owner HARBIN ENG UNIV
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