曙红Y/酞菁锌复合薄膜的非线性光学吸收  

Nonlinear Optical Absorption of Eosin Y and Zinc Phthalocyanine Composite Films

作　　者：陈刚 张震 杨洪伟 孙旭 彭进 Chen Gang;Zhang Zhen;Yang Hongwei;Sun Xu;Peng Jin(School of Information,Southwest Petroleum University,Nanchong 637001,Sichuan,China;College of Physics,Sichuan University,Chengdu 610064,Sichuan,China)

机构地区：[1]西南石油大学信息学院,四川南充637001 [2]四川大学物理学院,四川成都610064

出　　处：《光学学报》2022年第22期135-141,共7页Acta Optica Sinica

基　　金：中国工程物理研究院等离子体物理重点实验室基金(6142A04180309);南充市市校科技战略合作专项(18SX⁃HZ0026)。

摘　　要：利用Z扫描技术研究了曙红Y、酞菁锌、曙红Y/酞菁锌复合薄膜的非线性吸收特性。在脉冲能量为130μJ、脉宽为4 ns、波长为532 nm的激光作用下,实验显示曙红Y具有较强的饱和吸收,酞菁锌具有较强的反饱和吸收,吸收特性随着质量分数的增加而增强,重复测试表明两者都具有良好的稳定性。曙红Y/酞菁锌复合的聚乙烯醇(PVA)薄膜兼备饱和吸收与反饱和吸收特性,通过调整质量分数配比可调控透过率,调节材料的非线性吸收系数,实现材料限幅特性的“加法”。此种复合材料可用于新型光限幅器和光开关等光学器件。The nonlinear absorption properties of eosin Y(EY),zinc phthalocyanine(ZnPc),and EY/ZnPc composite films are investigated by the Zscan technique using laser with a pulse energy of 130µJ,a pulse width of 4 ns,and a wavelength of 532 nm.The experimental results show that EY has intense saturable absorption(SA)while ZnPc has strong reverse saturable absorption(RSA).The absorption properties enhance with the rising mass concentration,and both EY and ZnPc exhibit good stability in repeated tests.EY/ZnPc composite polyvinyl alcohol(PVA)films possess both SA and RSA characteristics.The transmittance of composite films can be adjusted by the mass fraction ratio change of EY and ZnPc.Moreover,the nonlinear absorption coefficient of the material can be adjusted,and the"addition"of material limiting properties is achieved.The composite materials can be used in new types of optical devices,such as optical limiters and optical switches.

关 键 词：非线性光学 曙红Y/酞菁锌复合薄膜 可调节非线性吸收 Z扫描技术 

分 类 号：O437.5[机械工程—光学工程]