scholarly journals 2D scanning system of the acousto-optical deflector with high diffraction efficiency

2021 ◽  
Vol 2091 (1) ◽  
pp. 012013
Author(s):  
Y V Pichugina ◽  
S V Garnov ◽  
Y N Bulkin
Keyword(s):  
Diffraction Efficiency ◽  
Laser Light ◽  
Laser Scanner ◽  
Bragg Diffraction ◽  
Scanning System ◽  
Temporal Control ◽  
Optical Deflector ◽  
Acoustic Transducer ◽  
Paratellurite Crystal ◽  
High Diffraction

Abstract The paper considers advantages and special features of an acousto-optic method for the development of a functional device for spatial and temporal control of laser light and reports results of investigations to create a two-directional acousto-optic laser scanner with diffraction efficiency as high as 80 percent or better. An acousto-optic deflector on a paratellurite crystal operating under the Bragg diffraction condition with a lithium niobate piezoelectric acoustic transducer was developed and tested experimentally. The results of this work can serve as a basis for the development of prototype functional acousto-optic devices for spatial and temporal control of laser light and their application to create laser television images.

scholarly journals Twisting Structures in Liquid Crystal Polarization Gratings and Lenses

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 243
Author(s):  
Shiyuan Zhang ◽  
Wan Chen ◽  
Yang Yu ◽  
Qidong Wang ◽  
Quanquan Mu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Diffraction Efficiency ◽  
Bragg Diffraction ◽  
Phase Compensation ◽  
Research Directions ◽  
Broad Bandwidth ◽  
Polarization Gratings ◽  
Diffraction Angle ◽  
High Diffraction Efficiency ◽  
High Diffraction

Recently, diverse twisting structures have been discovered to be a potential approach to design liquid crystal polarization gratings and lenses (LCPGs and LCPLs) with a high diffraction efficiency, broad bandwidth, wide view, and large diffraction angle. In this review, we divide these twisting structures into two main types, namely, multi-layer twisting structures with phase compensation and twisting structures forming Bragg diffraction. We found that multi-layer twisting structure LCPGs and LCPLs presented a broader bandwidth and a wider view angle by phase compensation. While for transmissive or reflective Bragg LCPGs, a large diffraction angle with high diffraction efficiency could be achieved. Based on the theoretical analysis in the review, potential research directions on novel twisting structures were prospected.

High diffraction efficiency for multi-layer dielectric gratings with rectangular groove

2008 ◽  
Author(s):  
Weijin Kong ◽  
Maojin Yun ◽  
Cuichun Ling ◽  
Xin Sun ◽  
Jianda Shao ◽  
...  
Keyword(s):  
Diffraction Efficiency ◽  
Dielectric Gratings ◽  
High Diffraction Efficiency ◽  
Rectangular Groove ◽  
High Diffraction

Design and Fabrication of Volume Holographic Gratings with Large Angular Bandwidth and High Diffraction Efficiency

2021 ◽  
Vol 41 (2) ◽  
pp. 0205001
Author(s):  
鲁婷婷 Lu Tingting ◽  
冯奇斌 Feng Qibin ◽  
王梓 Wang Zi ◽  
吕国强 Lü Guoqiang
Keyword(s):  
Diffraction Efficiency ◽  
Holographic Gratings ◽  
High Diffraction Efficiency ◽  
High Diffraction
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