An adaptive modulation system for a liquid crystal（LC） phase modulator is demonstrated. The phase retardation may be modulated by resetting the driving voltage automatically by matching the measured and ideal transm...An adaptive modulation system for a liquid crystal（LC） phase modulator is demonstrated. The phase retardation may be modulated by resetting the driving voltage automatically by matching the measured and ideal transmittance of an LC cell sandwiched by crossed polarizers. By using this system, an LC phase modulator can get a low error function of 0.25% in a short modulation time, which is less than the 10% obtained using a conventional modulation method.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 60578035 and 50473040, and the Science Foundation of Jilin Province under Grant Nos 20050520 and 20050321-2.
文摘一台单音域的铁电体液体水晶设备(FLCD ) 用一个新奇方法被制作。在这个方法使用的房间是一个不对称的房间，典型地为一底层的极的自我装配的单层(SAM ) 和为另外的底层的磨擦 polyimide 的联合。没有适用，铁电体液体水晶的没有缺点的排列被制作一在层移开退化的电压组织。自我装配的单层和 PI-2942 的接触角度被测量， SAM 的极性比 PI 排列高。自我装配的单层的极性是在 FLC 的单音域的排列的形成的一个关键因素，这被发现。
基金supported by the National Basic Research Program of China(No.2013CB328804)the National High Technology Research and Development Program of China(No.SS2015AA017001)the National Natural Science Foundation of China(No.61275026)
文摘An adaptive modulation system for a liquid crystal（LC） phase modulator is demonstrated. The phase retardation may be modulated by resetting the driving voltage automatically by matching the measured and ideal transmittance of an LC cell sandwiched by crossed polarizers. By using this system, an LC phase modulator can get a low error function of 0.25% in a short modulation time, which is less than the 10% obtained using a conventional modulation method.
