Liquid-crystal blazed-grating beam deflector |
| |
Authors: | Wang X Wilson D Muller R Maker P Psaltis D |
| |
Affiliation: | Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA. |
| |
Abstract: | A transmission-type nonmechanical multiple-angle beam-steering device that uses liquid-crystal blazed grating has been developed. Sixteen steering angles with a contrast ratio of 18 has been demonstrated. A detailed analysis of the liquid-crystal and poly(methyl methacrylate) blazed-grating deflector was carried out to provide guidance during the deflector's development. A manufacturing offset compensation technique is proposed to improve the device's performance greatly. A hybrid approach utilizing electrically generated blazed grating combined with the cascading approach described here yields in excess of 500 deflecting angles. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|