Serak Svetlana V, Hakobyan Rafael S, Nersisyan Sarik R, Tabiryan Nelson V, White Timothy J, Bunning Timothy J, Steeves Diane M, Kimball Brian R
Beam Engineering for Advanced Measurements Co., Winter Park, Florida 32789, USA.
Opt Express. 2012 Feb 27;20(5):5460-9. doi: 10.1364/OE.20.005460.
Pairs of cycloidal diffractive waveplates can be used to doubly diffract or collinearly propagate laser radiation of the appropriate wavelength. The use of a dynamic phase retarder placed in between the pair can be utilized to switch between the two optical states. We present results from the implementation of an azo-based retarder whose optical properties can be modulated using light itself. We show fast and efficient switching between the two states for both CW and single nanosecond laser pulses of green radiation. Contrasts greater than 100:1 were achieved. The temporal response as a function of light intensity is presented and the optical switching is shown to be polarization independent.
成对的摆线衍射波片可用于对适当波长的激光辐射进行双衍射或共线传播。在这对波片之间放置一个动态相位延迟器，可用于在两种光学状态之间切换。我们展示了基于偶氮的延迟器的实验结果，其光学特性可通过光本身进行调制。对于绿色辐射的连续波（CW）和单个纳秒激光脉冲，我们都展示了在两种状态之间的快速高效切换。实现了大于100:1的对比度。给出了作为光强函数的时间响应，并且表明光学切换与偏振无关。
