Study of all-optical switching properties of zinc phthalocyanine thin film by pump-probe technique
Study of all-optical switching properties of zinc phthalocyanine thin film by pump-probe technique
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DOI：
10.1016/j.optlastec.2017.04.020
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发表时间：
2017-10-01
影响因子：
5
通讯作者：
Kapoor, Kirti
中科院分区：
文献类型：
--
作者：
Kumar, Anil;Punia, Rajesh;Kapoor, Kirti
报道了酞菁锌（Zn（II）Pc）薄膜的非线性光学吸收、折射和开关特性。利用Z扫描技术研究了薄膜对532 nm纳秒脉冲Nd：YAG激光的非线性吸收和非线性折射行为。采用泵浦-探测技术，以波长为532 nm的Nd：YAG激光为泵浦光，波长为632.8nm的连续He-Ne激光为探测光，研究了该染料的光开关特性。染料的开关行为归因于染料分子对探测光束的激发态吸收（ESA）。研究了探测光随抽运光强的变化规律。(C)2017爱思唯尔有限公司版权所有
The nonlinear optical absorption, refraction and switching behavior of Zinc phthalocyanine (Zn(II)Pc) thin films are reported. Z-scan technique is employed to study the nonlinear absorption and nonlinear refraction behavior of the thin films with nanosecond pulses of Nd:YAG laser at 532 nm. Optical switching behavior of the dye is studied using pump-probe technique with similar to 5 ns pulses of Nd:YAG at 532 nm as the pump beam and 632.8 nm cw He-Ne laser as the probe beam. The switching behavior of the dye is attributed to excited state absorption (ESA) of the probe beam by the dye molecules. Probe beam modulation with increasing pump intensity is also investigated. (C) 2017 Elsevier Ltd. All rights reserved.