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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >PCBM:P3HT polymer composites for photonic crystal all-optical switching applications
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PCBM:P3HT polymer composites for photonic crystal all-optical switching applications

机译:PCBM:P3HT聚合物复合材料,用于光子晶体全光开关应用

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摘要

An all-optical switching with an operating pump intensity of 1 MW cm ~(-2) is realized in a one-dimensional nonlinear organic photonic crystal made of poly(3-hexylthiophene) doped with 1-(3-methoxycarbonyl)propyl-1- phenyl-(6,6)C_(61), fabricated by focused ion-beam etching. The femtosecond pump and probe method is adopted to measure the transmittance changes of the probe laser based on the photonic bandgap shift induced by the pump laser. Under resonant excitation, a large nonlinear refractive index of the order of 10~(-9) cm~2 W~(-1) is obtained for the polymer composite. A switching time of 58.9 ps is maintained due to intermolecular charge transfer and exciton-exciton annihilation.
机译:在由1-(3-甲氧基羰基)丙基-1掺杂的聚(3-己基噻吩)制成的一维非线性有机光子晶体中,实现了泵浦强度为1 MW cm〜(-2)的全光开关。 -通过聚焦离子束蚀刻制造的苯基-(6,6)C_(61)。飞秒泵浦探测法是基于泵浦激光器引起的光子带隙位移来测量探测激光器的透射率变化。在共振激发下,聚合物复合材料获得了约10〜(-9)cm〜2 W〜(-1)的大非线性折射率。由于分子间电荷转移和激子-激子an灭,切换时间维持在58.9 ps。

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