Electrically controlled optical choppers based on holographic polymer dispersed liquid crystal gratings

An electrically controlled optical chopper based on switchable holographic polymer dispersed liquid crystal （H-PDLC） gratings is demonstrated through a programmable, adjustable, and periodic external driving source. Compared with traditional mechanical optical choppers, the H-PDLC chopper exhibits many advantages, including faster response time, less waveform deformation, as well as easier integration, control, and fabrication, to name a few. Its excellent performance makes the device potentially useful in frequency modulation optical systems, such as frequency division multiplexed microscopy system.     

电控全息聚合物分散液晶斩光器的设计与研究

根据全息聚合物分散液晶(H-PDLC)的电光特性,即在电场的作用下对通过H-PDLC的光束呈现“开”和“关”两种状态.设计了方波及正旋波调制的单通道及双通道H-PDLC斩光器.实验表明,H-PDLC斩光器频率稳定,响应速度快(最快可达微秒级),体积小易于集成,无噪音,同时通过计算机可灵活控制电场的频率,占空比,波形,达...