Optical nonlinearity of organic dyes as studied by Z-scan and transient grating techniques

Journal of Chemical Sciences

Prem B Bisht1¹  R Justin Rajesh¹  Umakanta Tripathy¹  A Subrahamanyam¹ 

[1] Department of Physics, Indian Institute of Technology - Madras, Chennai 600 036, India$$

关键词: Excited state absorption;    Z-scan;    nonlinear refractive index;    excited state relaxation;    transient grating.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The excited state absorption cross-section of 5,5′-dichloro-11-diphenylamino- 3,3′-diethyl-10,12-ethylinethiatricarbocyanine perchlorate (IR140) have been measured by using a single beam transmission technique. Z-scan experiments have been used to find out a few nonlinear parameters. The excited state relaxation times have also been measured by using laser induced transient grating (LITG) technique.

【 授权许可】

Unknown