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Liquid crystal optical phased-array angular amplifier

A technology of liquid crystal optics and angle magnification, applied in optics, nonlinear optics, instruments, etc., can solve problems such as difficult control and small mechanical control range, and achieve broad application prospects and optimal diffraction efficiency

Inactive Publication Date: 2016-07-06
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0003] The purpose of the present invention is to provide a liquid crystal optical phased array angle amplifier, which solves the problem of small mechanical control range and difficult control in the liquid crystal optical phased array in the prior art

Method used

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  • Liquid crystal optical phased-array angular amplifier
  • Liquid crystal optical phased-array angular amplifier
  • Liquid crystal optical phased-array angular amplifier

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Embodiment

[0030] like figure 1 As shown, a liquid crystal optical phased array angle amplifier of the present invention includes liquid crystal polarization gratings 31-34 in the X direction, liquid crystal wave plates 21-24 for its polarization state control, and a liquid crystal polarization grating 51 in the Y direction -54, and the liquid crystal wave plate 41-44 for its polarization state control, the liquid crystal wave plate controller 1 and the output beam polarization state conversion wave plate 6, wherein the grating vector of the cascaded liquid crystal polarization grating 31-34 on the X direction The directions are parallel to each other, the grating vector directions of the cascaded liquid crystal polarization gratings 51-54 in the Y direction are parallel to each other, and in space, the grating vector directions of the cascaded liquid crystal polarization gratings in the X direction The vector directions of the gratings are perpendicular to each other, and the angle ampl...

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Abstract

The invention discloses a liquid crystal optical phased array angle amplifier, which comprises a cascaded liquid crystal polarization grating in the X direction, a cascaded liquid crystal polarization grating in the Y direction, a liquid crystal wave plate driver, and an outgoing light beam polarization state conversion wave plate. The present invention realizes the uniform discrete distribution of pointing angles in two-dimensional space by setting the period of the liquid crystal polarization grating, and makes the interval between adjacent pointing angles the same as the scanning range of the liquid crystal optical phased array itself; structure, to avoid the influence of oblique incident laser beam on the efficiency dissipation, so that the angle amplifier has the best diffraction efficiency; by optimizing the loading voltage on each level of liquid crystal wave plate, the polarization state of each level of liquid crystal polarization grating can be precisely controlled , so that the diffraction efficiency of each order is optimized.

Description

technical field [0001] The invention relates to the field of non-mechanical scanning control of a laser beam liquid crystal optical phased array in an active photoelectric system, in particular to a liquid crystal optical phased array angle amplifier. Background technique [0002] Liquid crystal optical phased array technology is a new technology for non-mechanical scanning control of laser beams in active optoelectronic systems, which can be used for laser beam emission, tracking and other applications of such active optoelectronic systems. The scanning range of the laser beam is a key index to characterize the application performance of the liquid crystal optical phased array. In practice, it is necessary to cascade an angle amplification device in the liquid crystal optical phased array to increase the scanning range of the laser beam. Contents of the invention [0003] The purpose of the present invention is to provide a liquid crystal optical phased array angle amplif...

Claims

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Application Information

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IPC IPC(8): G02F1/29
CPCG02F1/292
Inventor 赵祥杰段佳著曾建成储松南胡奇琪乔冉
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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