Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers
Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers
复制标题
聚二乙炔定向耦合器中非线性光传输和开关现象的观察
DOI：
10.1063/1.102179
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发表时间：
1989
影响因子：
4
通讯作者：
S. Etemad
中科院分区：
文献类型：
--
作者：
P. Townsend;J. Jackel;G. Baker;J. A. Shelburne;S. Etemad
在可溶聚二乙炔制备的定向耦合器器件中观察到非线性光传输和开关现象。确定了慢热非线性和超快（皮秒）电子非线性的影响。在1.06 μm的工作波长下，由于双光子吸收效应，折射率虚部发生了强度相关的变化，从而产生了超快电子非线性现象。
Nonlinear optical transmission and switching phenomena have been observed in directional coupler devices fabricated from soluble polydiacetylenes. Effects due to both slow thermal nonlinearities and ultrafast (picosecond) electronic nonlinearities were identified. At the operating wavelength of 1.06 μm used here, the ultrafast electronic nonlinear phenomena originated from intensity‐dependent changes in the imaginary part of the refractive index due to two‐photon absorption effects.