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Dye adulteration nematic liquid crystal tunable laser and preparation method thereof

A technology of chiral nematic phase and tuned lasers, which is applied to lasers, laser components, devices for controlling laser output parameters, etc., can solve the problems of long distances between applications, and achieve reduced light leakage, enhanced laser radiation, and refractive index anisotropy big effect

Inactive Publication Date: 2014-10-01
SHENYANG LIGONG UNIV
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  • Dye adulteration nematic liquid crystal tunable laser and preparation method thereof
  • Dye adulteration nematic liquid crystal tunable laser and preparation method thereof
  • Dye adulteration nematic liquid crystal tunable laser and preparation method thereof

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Embodiment Construction

[0058] A dye-doped chiral nematic liquid crystal tunable laser, comprising an upper glass substrate 1 and a lower glass substrate 2 arranged in parallel, characterized in that:

[0059] The upper glass substrate 1 and the lower glass substrate 2 are transparent glass substrates with a thickness of 1.1 mm and an area of ​​2 cm×2 cm, and the overall flatness is ≥1 / 10 wavelength.

[0060] Eight pairs of titanium dioxide and silicon dioxide dielectric film layers 3 are alternately plated on the inner wall of the upper glass substrate 1 , with thicknesses of 55nm and 80nm respectively. When the incident angle of the 532nm pump laser is 20°, the wavelength of the pump laser is 532nm. Radiation laser wavelength 610-660nm (varies in this range when temperature tuning) is reflected.

[0061] Eight pairs of titanium dioxide and silicon dioxide dielectric film layers 4 are alternately plated on the inner wall of the lower glass substrate 2, with thicknesses of 78nm and 118nm respectively....

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Abstract

The invention discloses a dye adulteration nematic liquid crystal tunable laser and a preparation method thereof. The dye adulteration nematic liquid crystal tunable laser comprises an upper base plate and a lower base plate, wherein the upper base plate and the lower base plate are respectively plated with multiple layers of titanium dioxide and silicon dioxide dielectric films in alternation mode, alignment layers are respectively arranged on the multiple layers of the titanium dioxide and silicon dioxide dielectric films on the upper base plate and the lower base plate, and the alignment layers rub the multiple layers of the titanium dioxide and silicon dioxide dielectric films in anti-parallel mode so as to form a liquid box. The thickness of the liquid box is 4mm, and the liquid box is filled with dye adulteration nematic liquid crystal prepared from nematic liquid crystal SLC12V620, chiral agent S8-11 and dye DCM. Solid Nd:YAG laser light which is 5HZ in pulse frequency and 532nm in wave length is used as a pump light source, and the incidence angle of the laser light is 20 degrees. The dye adulteration nematic liquid crystal tunable laser is small in line width, improves radiation laser intensity, improves pumping efficiency, and saves energy, and especially the dye adulteration nematic liquid crystal tunable laser is stable in work and easy to tune.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic devices, and relates to a dye-doped chiral nematic liquid crystal tunable laser with high radiation intensity and temperature tuning. Background technique [0002] The tunable lasers currently being used and researched mainly include semiconductor tunable lasers and fiber tunable lasers. In order to realize the laser wavelength tuning output, the two involve more devices and more complex structures. [0003] Laser dyes can obtain a broad fluorescence spectrum from ultraviolet to near infrared, so dye lasers can obtain a wide range of emitted laser light. The chiral nematic liquid crystal in the planar alignment state is known as a self-assembled one-dimensional photonic crystal, which has a photon forbidden band (ie, a reflection band). And under the action of external fields (temperature, electric field, pressure, magnetic field, etc.), the position of the photon forbidden band moves. O...

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Application Information

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IPC IPC(8): G02F1/13G02F1/1333G02B5/28H01S3/107H01S5/06
Inventor 乌日娜岱钦
Owner SHENYANG LIGONG UNIV
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