Scattering-based hole burning through volume speckles in a random medium with tunable diffusion constant
Scattering-based hole burning through volume speckles in a random medium with tunable diffusion constant
复制标题
DOI：
10.1063/1.2955830
复制
发表时间：
2008-10
影响因子：
4
通讯作者：
S. Murai;K. Fujita;Takayuki Hirao;K. Nakanishi;K. Hirao;Katsuhisa Tanaka
中科院分区：
文献类型：
--
作者：
S. Murai;K. Fujita;Takayuki Hirao;K. Nakanishi;K. Hirao;Katsuhisa Tanaka
通过在大孔铝硅酸盐玻璃中渗透液晶，制备了扩散常数D可调的光敏无规介质。时间分辨透射实验表明，在LC渗透样品中的D在约35°C处突然变化，这是由于LC在双折射和各向同性之间的相变。研究了基于多次散射光干涉的烧孔效应，其目的是通过温度来控制烧孔特性。我们证明，孔分别登记在每个LC阶段，并可以根据温度选择性地检测。
A photoreactive random medium with tunable diffusion constant D is fabricated by infiltrating Sm2+-doped macroporous aluminosilicate glass with liquid crystal (LC). Time-resolved transmission experiment reveals that D in the LC-infiltrated sample changes abruptly at around 35°C due to the phase transition of LC between nematic and isotropic. The hole burning effect based on the interference of multiply scattered light is investigated with a particular motivation of controlling hole burning properties externally via temperature. We demonstrate that the holes are separately registered in each LC phase and can be detected selectively depending on the temperature.