Device and method for emitting double-faced random lasers with different polarization directions

A technology of random laser and polarization direction, applied in the field of random laser, can solve problems such as energy loss, and achieve the effect of reducing energy loss, easy implementation, and no loss of random laser energy.

Inactive Publication Date: 2014-05-28
SOUTHEAST UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, the more the beam passes through the external device, the more energy loss may be accompanied, and a polarizing device can only act on one beam of light at the same time.

Method used

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  • Device and method for emitting double-faced random lasers with different polarization directions
  • Device and method for emitting double-faced random lasers with different polarization directions

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and embodiment mode, the patent of the present invention is described in further detail:

[0020] The double-sided random laser emission device with different polarization directions of the present invention includes a box-like structure made of two ITO glass substrates, gaskets, and thermosetting resin, and laser dyes and laser dyes poured into the box-like structure. A mixture of nematic liquid crystals. In the present invention, firstly, a liquid crystal alignment agent is coated on one side of two glass substrates to form a uniform alignment film. Then, perform orientation treatment on the oriented film, there are many orientation methods, such as rubbing orientation method, laser-induced orientation method and so on. According to the actual requirement for the polarization direction of the outgoing random laser, it is determined that the alignment films on the two glass substrates are aligned in the corresponding dire...

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Abstract

The invention discloses a device and a method for emitting double-faced random lasers with different polarization directions. The device comprise a box-packed structure prepared from two glass substrates, as well as liquid crystal and a laser dye filled in the box-packed structure, wherein a liquid crystal orientation agent is coated on the inner surfaces of the two glass substrates to form an orientation film, and the orientation film is orientated to enable the orientations on the two glass substrates to be different; when a pump light is irradiated on one surface of the box at a certain angle, random lasers capable of carrying out linear polarization on the both surfaces of the box are emitted vertically to the surfaces of the box, and the polarization directions and the orientations of the emission surfaces are the same. The device and method disclosed by the invention have the advantages of being simple and convenient, easy to realize, and low in energy loss.

Description

technical field [0001] The invention relates to random lasers, in particular to a device and method for emitting double-sided random lasers with different polarization directions. Background technique [0002] Polarization is one of the main characteristics of light, and its application has important practical significance: for example, the surface properties (such as surface roughness) of the optical medium can be obtained according to the polarization characteristics of reflected and transmitted light: the internal structure and material properties of the optical medium can be peeked out; In particular, the research on the polarization properties of scattered light has wider application prospects and scientific value: according to the different polarization characteristics of medium scattering and target reflected light, polarization technology can be used to eliminate the interference of particle scattering light and improve the clarity of underwater images; Using laser p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06
Inventor 叶莉华赵翀顾兵刘波王雁崔一平
Owner SOUTHEAST UNIV
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