Direct investigation and accurate control of phase profile in liquid-crystal optical-phased array for beam steering

2013 ◽  
Vol 52 (29) ◽  
pp. 7109 ◽  
Author(s):  
Xiangjie Zhao ◽  
Cangli Liu ◽  
Dayong Zhang ◽  
Yongquan Luo
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Beam Steering ◽  
Phase Profile ◽  
Optical Phased Array ◽  
Direct Investigation

Beam Pointing Precision Control by Using a Liquid Crystal Optical Phased Array

2010 ◽  
Vol 437 ◽  
pp. 344-348 ◽  
Author(s):  
Li Ying Wu ◽  
Jian Zhang ◽  
Yun Fang
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Beam Steering ◽  
Incident Beam ◽  
Electric System ◽  
New Device ◽  
Energy Consuming ◽  
Extraordinary Refractive Index ◽  
Optical Phased Array ◽  
Pointing Precision

For laser beam steering, a pure optical-electric system without mechanical or inertial parts is used. The new device is a Liquid Crystal Optical Phased Array (LCOPA). Supplying electric field to liquid crystal cell with electrodes, the extraordinary refractive index changes, which results in phase shift that modulates the direction of incident beam. The advantages of this device are small size, less energy consuming, programmable and addressable control. A one dimensional device is designed and tested. The resolution of the steering angle is 20 μrad, the range is ±2o. The effect of flyback region and phase valley on diffraction efficiency is also discussed briefly.

Fast beam steering with a ferroelectric-liquid-crystal optical phased array

2009 ◽  
Vol 48 (9) ◽  
pp. 1721 ◽  
Author(s):  
David Engström ◽  
Michael J. O'Callaghan ◽  
Chris Walker ◽  
Mark A. Handschy
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Beam Steering ◽  
Ferroelectric Liquid Crystal ◽  
Optical Phased Array

Improved high order grating method to realize wide angle beam steering on liquid crystal optical phased array

2015 ◽  
Author(s):  
Liang Wu ◽  
Xiangru Wang ◽  
Caidong Xiong ◽  
Ziqiang Huang ◽  
Jing Du ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Beam Steering ◽  
High Order ◽  
Wide Angle ◽  
Optical Phased Array

Theoretical Study on Beam Steering Efficiency of Liquid Crystal Optical Phased Array

2011 ◽  
Vol 48 (6) ◽  
pp. 061402
Author(s):  
邹永超 Zou Yongchao ◽  
周朴 Zhou Pu ◽  
司磊 Si Lei ◽  
马浩统 Ma Haotong ◽  
陶汝茂 Tao Rumao
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Theoretical Study ◽  
Beam Steering ◽  
Optical Phased Array
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