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Liquid crystal spatial light modulator

A spatial light modulator and liquid crystal technology, applied in optics, instruments, nonlinear optics, etc., can solve problems affecting the resolution of liquid crystal spatial light modulators, low carrier mobility, and long photoresponse time, and achieve improved Imaging quality and image resolution, process parameters are controllable, and the effect of simple preparation process

Active Publication Date: 2017-07-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned traditional photosensitive layer materials have disadvantages such as long photoresponse time and low carrier mobility, which affect the resolution of liquid crystal spatial light modulators and severely limit their practical applications.

Method used

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Embodiment Construction

[0030] Embodiments of the present invention are described below in conjunction with the accompanying drawings:

[0031] like figure 1 Shown is the liquid crystal spatial light modulator provided by the present invention, which includes: a first transparent substrate 2 and a second transparent substrate 12 arranged in parallel, and the opposite sides of the first transparent substrate 2 and the second transparent substrate 12 are respectively deposited There is a first transparent conductive film layer 3 and a second transparent conductive film layer 11, and then a first transparent electrode and a second transparent electrode are formed, and a photosensitive layer 4 and an electrode layer 5 are sequentially arranged between the first transparent electrode and the second transparent electrode , the light blocking layer 6, the dielectric mirror 7, the first alignment layer 8, the liquid crystal layer 9 and the second alignment layer 10, combined figure 2 It can be seen that th...

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Abstract

The invention provides a liquid crystal spatial light modulator, belongs to the technical field of liquid crystal devices. According to the liquid crystal spatial light modulator, on the basis of the original photovoltaic and reflective type liquid crystal spatial light modulator, the traditional photosensitive layer is upgraded into a novel photosensitive layer of a composite thin film structure formed by an amorphous silicon thin film and a tin silicon alloy thin film deposited on the amorphous silicon thin film, and the spectral response range through the voltage regulating devices on the two ends of the photosensitive layer is achieved, and on the basis that the tin silicon alloy thin film has the property that when the tin content reaches a certain value the film can be transformed into a direct band-gap semiconductor from an indirect band-gap semiconductor, the image resolution and light sensitivity and responsiveness of the device can be improved. In addition, the liquid crystal spatial light modulator is simple in preparation process, easy to operate, controllable in process parameters, and favorable to industrial production manufacturing.

Description

technical field [0001] The invention belongs to the field of liquid crystal devices, in particular to a liquid crystal spatial light modulator. Background technique [0002] A spatial light modulator (Spatial Light Modulator-SLM) is a component that modulates the light field distribution of light waves. This type of component can change the spatial light distribution under the control of an electrical drive signal or other signals that change over time. Amplitude or intensity, phase, polarization state and wavelength, or convert incoherent light to coherent light. Based on the above properties, spatial light modulators can be used as structural units or key devices in systems such as real-time optical information processing, optical computing, and optical neural networks. [0003] Optically Addressable Spatial Light Modulator (OASLM) is a photoelectric conversion device that can modulate the characteristics of the read beam according to the written image. As a key device in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/1337
CPCG02F1/1335G02F1/133723
Inventor 蒋向东明洋舟王继岷高升旭
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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