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Pulsed laser induced birefringence switching in a biopolymer matrix containing azo-dye molecules

机译:含偶氮染料分子的生物聚合物基质中的脉冲激光诱导双折射转换

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摘要

All optical switching has been studied using the Optical Kerr Effect (OKE) configuration in a biopolymer matrix containing an azo-dye: the Disperse Orange 3 (D03). The biopolymer system consisted of a deoxy-ribonucleic acid blended with cationic surfactant molecule cetyltrimethyl-ammonium chloride is suitable for optical quality thin film fabrication. The excitation beams inducing birefringence were delivered from a continuous wave laser at 532 nm and another nanosecond pulsed Nd: YAG laser. The birefringence was instantaneously monitored under crossed polarizer system by a weak non-absorbed light from a cw He-Ne laser working at 632.8 nm. Fast all optical switching process (in the range of microseconds) and excellent reversibility have been observed.
机译:已经使用光学克尔效应(OKE)配置在包含偶氮染料的生物聚合物基质中对所有光学开关进行了研究:分散橙3(D03)。由脱氧核糖核酸与阳离子表面活性剂分子十六烷基三甲基氯化铵混合而成的生物聚合物系统适用于光学质量的薄膜制造。激发双折射的激发光束是从532 nm的连续波激光器和另一纳秒脉冲Nd:YAG激光器发出的。在交叉偏振器系统下,通过来自工作在632.8 nm的He-Ne连续激光器的微弱吸收光,瞬时监控双折射。已经观察到快速的全光切换过程(在微秒范围内)和出色的可逆性。

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