二芳基乙烯薄膜双稳态全光开关的实验研究

发布时间：2018-01-09 05:33

本文关键词：二芳基乙烯薄膜双稳态全光开关的实验研究　出处：《光电子·激光》2016年01期 　论文类型：期刊论文

【摘要】：采用二芳基乙烯(DA,diarylethene)材料顺-1,2-二氰基-1,2-双(2,4,5-三甲基-3-噻吩基)乙烯cis-1,2-Dicyano-1,2-bis(2,4,5-trimethyl-3-thienyl)ethene掺杂到聚甲基丙烯酸甲酯(PMMA)制成有机掺杂薄膜样品(掺杂质量百分比为10%),基于薄膜光致吸收特性的变化构建了有机掺杂薄膜双稳态全光开关,分别以波长为375nm的紫外激光(CW,40mW)和波长为532nm的可见激光(CW,5 mW)作为激发光,以波长为632.8nm的He-Ne激光(CW,3μW)为探测光,实验研究并获得了薄膜样品的双稳态全光开关实验结果,开关信号的调制深度为8.2%,开关上升时间约为36s,下降时间约为47s。根据光致变色系统二能级理论,对全光开关的实验结果和机理作了较深入分析。本文的双稳态全光开关具有简单容易实现的特点,作为一种低速的双稳态全光开关有潜在应用价值。
[Abstract]:The diarylene-dimethyl-dimethyl-3-thiophenyl (cis-1) was prepared by using the diarylene-2-dicyano-2-dicyano-2-dioxy-2-trimethyl-5-trimethyl-3-thiophene (cis-1). 2-Dicyano-1, 2-bis2, 4. The organic doped films were prepared by doping 5-trimethyl-3-thienylanethene into PMMA (10% doping mass). Based on the change of the photoabsorption characteristics of the films, a bistable all-optical switch with wavelength of 375nm was constructed. 40 MW) and 532 nm visible laser (CWO 5 MW) were used as excitation light and He-Ne laser with wavelength of 632.8 nm as detecting light. The experimental results of bistable all-optical switch of thin film samples are obtained. The modulation depth of switch signal is 8.2 and the rising time of switch is about 36 seconds. According to the two-level theory of photochromic system, the experimental results and mechanism of all-optical switch are deeply analyzed. The bistable all-optical switch in this paper is simple and easy to realize. As a low speed bistable all-optical switch, it has potential application value.
【作者单位】：岭南师范学院信息科学与技术学院;南开大学物理科学学院;
【基金】：国家自然科学基金(11574158) 广东省自然科学基金(S2013010012022) 湛江市科技攻关(2012C3103023)资助项目
【分类号】：TB383.2
【正文快照】： 1引言全光开关是实现全光通信、全光网络和全光计算机必不可少的关键器件,基于有机光色材料的全光开关是研究的热点之一[1~4]。新一代光致变色材料二芳基乙烯(DA,diarylethene)具有光学双稳态、快的光响应速度(ps秒级)及良好的热稳定性和抗疲劳性等优良的光学性质,DA化合物分

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