Title :
The state of the art for liquid crystal adaptive optics in astronomical applications
Author :
Lifa Hu ; Li Xuan ; Zhaoliang Cao ; Quanquan Mu ; Zenghui Peng ; Yonggang Liu ; Lishuang Yao ; Chengliang Yang ; Xinghai Lu ; Dayu Li ; Mingliang Xia
Author_Institution :
State Key Lab. of Appl. Opt., Changchun Inst. of Opt., Fine Mech. & Phys., Changchun, China
Abstract :
In this paper, we summarize the researches of liquid crystal (LC) adaptive optics(AO) in astronomical applications. Dual frequency and nematic LC materials were reported to be used in astronomical observations. However, nematic LC with its simple producing and driving method and multi-gray-level is promising in the application. We have investigated the nematic LC AO system and promoted its application for nearly ten years. Here, we reported our newest nematic LC AO system with bandwidth result of -3dB is 54.4 Hz, 0 dB bandwidth is 79.1Hz.
Keywords :
adaptive optics; astronomical techniques; liquid crystal devices; nematic liquid crystals; wavefront sensors; astronomical applications; dual frequency LC materials; liquid crystal adaptive optics; nematic LC AO system; nematic LC materials; Adaptive optics; Bandwidth; Materials; Phase modulation; Telescopes; Time factors; GPU; adaptive optics; astronomical telescope; liquid crystal; wavefront sensor;
Conference_Titel :
Optoelectronics and Microelectronics (ICOM), 2012 International Conference on
Conference_Location :
Changchun, Jilin
Print_ISBN :
978-1-4673-2638-4
DOI :
10.1109/ICoOM.2012.6316307
