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Measuring device and method for phase control characteristics of liquid crystal device

A liquid crystal device and phase technology, which is applied in the field of measuring devices for phase regulation characteristics of liquid crystal devices under continuous laser irradiation, and can solve problems such as heating liquid crystal devices and affecting the phase regulation function of liquid crystal devices

Active Publication Date: 2020-08-28
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Laser irradiation will heat the liquid crystal device, especially high-power continuous laser irradiation, which will cause the liquid crystal device to show obvious thermal effects, thus affecting the phase adjustment function of the liquid crystal device

Method used

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  • Measuring device and method for phase control characteristics of liquid crystal device
  • Measuring device and method for phase control characteristics of liquid crystal device
  • Measuring device and method for phase control characteristics of liquid crystal device

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with example and accompanying drawing, but should not limit the protection scope of the invention with this.

[0021] see figure 1 . figure 1 It is a schematic diagram of a measuring device for phase regulation characteristics of a liquid crystal device of the present invention. As can be seen from the figure, the measuring device of the phase control characteristic of the liquid crystal device of the present invention comprises a detection laser 102, a first polarizing beam splitter 103, a first half-wave plate 104, a focusing lens 105, a sample stage 107, a second half-wave plate 108, a first Two polarization beam splitters 109, power meter 110 and computer 111, the relation of above-mentioned parts is as follows:

[0022] The liquid crystal device 106 to be tested is placed on the sample stage 107, and the detection laser 102 outputs a detection laser light and irradiates the first polarization be...

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Abstract

The invention discloses a liquid crystal device phase control characteristic measuring device under continuous laser irradiation and measuring method. The measuring device comprises a detection laser,a first polarizing spectroscope, a first half-wave plate, a focusing lens, a sample table, a second half-wave plate, a second polarizing spectroscope, a power meter and a computer. The liquid crystaldevice phase control characteristic changes under effects of continuous laser can be measured in an online and real-time mode though detecting the power change of the laser. The method is simple andfeasible, and can accurately evaluate the effects of different laser parameters on the liquid crystal device phase control characteristics.

Description

technical field [0001] The invention relates to a liquid crystal device, in particular to a measuring device and method for measuring phase regulation characteristics of a liquid crystal device under continuous laser irradiation. Background technique [0002] Liquid crystal devices have a phase control function, and have a wide range of applications in beam spatial shaping, coherent wavefront correction, dynamic holography, optical tweezers, adaptive optics, and beam deflection. Laser irradiation will heat the liquid crystal device, especially high-power continuous laser irradiation, which will cause the liquid crystal device to show obvious thermal effects, thereby affecting the phase adjustment function of the liquid crystal device. It is of great scientific significance and practical value for the application of liquid crystal devices in continuous laser to measure the change of phase regulation characteristics of liquid crystal devices under continuous laser irradiation....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 刘晓凤彭丽萍赵元安李大伟胡国行朱美萍邵建达
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI