Nonlocal Nonlinear Optical Response of Ionic Liquids under Violet Excitation

Author:

Santos Cássio E. A.1,Alencar Márcio A. R. C.1ORCID,Migowski Pedro2,Dupont Jairton2,Hickmann Jandir M.1

Affiliation:

1. Optics and Materials Group (OPTMA), Universidade Federal de Alagoas, P.O. Box 2051, 57061-970 Maceió, AL, Brazil

2. Instituto de Química, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil

Abstract

The nonlocal nonlinearity under violet excitation of ionic liquids was investigated using the Z-scan technique. The bis(trifluoromethylsulfonyl)imide (Tf2N) was employed as anionic part, while the cationic part consisted of four different imidazolium (, with , 6, 8, and 10) derivatives. The thermooptical coefficients, nonlinear refractive indexes of thermal origin, and degree of nonlocality were obtained for laser excitation tuned at 410 nm. Our results indicate that ionic liquids can be exploited as very efficient nonlinear media with large nonlocal character under violet excitation.

Publisher

Hindawi Limited

Subject

General Engineering,General Materials Science

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