Ultrafast all-optical spatial light modulation based on complex refractive index changes of copper phthalocyanine-doped polymer film upon photoexcitation in guided mode geometry
Ultrafast all-optical spatial light modulation based on complex refractive index changes of copper phthalocyanine-doped polymer film upon photoexcitation in guided mode geometry
复制标题
基于导模几何光激发时铜酞菁掺杂聚合物薄膜的复杂折射率变化的超快全光空间光调制
DOI：
10.1016/s0030-4018(02)01312-3
复制
发表时间：
2002
影响因子：
2.4
通讯作者：
Iori Yoshida
中科院分区：
文献类型：
--
作者：
T. Nagamura;Kyoichi Sasaki;Futoshi Iizuka;Tatsuo Adachi;Iori Yoshida
利用纳秒脉冲激光作为写入光束，在入射角对应于尖锐导模共振的条件下，在含有水溶性酞菁的聚乙烯醇（PVA）薄膜中，通过光致复折射率变化实现了超快全光反射控制.反射率的上升时间小于20 ns，下降时间由受激三重态酞菁的寿命控制，对于铜酞菁（CuPcS）为31 ns。通过使用光致变色染料，确定空间分辨率优于约3 μm。基于CuPcS的光激发的本系统将允许高达约30 MHz的全光空间光调制。
Ultrafast all-optical reflectance control was achieved by photoinduced complex refractive index changes in thin poly(vinyl alcohol) (PVA) films containing water-soluble phthalocyanine at the incident angle corresponding to a sharp guided mode resonance upon excitation with a ns pulsed laser as a writing beam. The rise time of reflectance was less than 20 ns and the fall time was controlled by the lifetime of the excited triplet phthalocyanine, 31 ns for copper phthalocyanine (CuPcS). The spatial resolution was determined to be better than about 3 μm by using a photochromic dye. The present system based on photoexcitation of CuPcS will allow all-optical spatial light modulation upto about 30 MHz.
影响因子：
4
作者：
Kyoichi Sasaki;T. Nagamura
通讯作者：
Kyoichi Sasaki;T. Nagamura