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Proceedings Paper

Characterization of the thermal refraction in ionic liquids induced by a train of femtosecond laser pulses
Author(s): E. López Lago; J. A. Nóvoa; D. Nóvoa; H. Michinel; O. Cabeza; J. R. Rodríguez; L. M. Varela
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Paper Abstract

We investigate the nonlinear refraction induced by a train of ultrashort laser pulses (repetition rate 80.75MHz) in a set of ionic liquids: [EMIM][BF4], [BMIM] [BF4], [HMIM] [BF4], [OMIM] [BF4] and [DMIM] [BF4]. Due to the high repetition rate, linear absorption processes are developed which cause a non local increase of temperature that generates an inhomogeneous and non local spatial variation of the refractive index. This effect is known as thermal refraction. The goal of this work is to characterize by z-scan the induced changes in the refractive index at λ=810nm and to determine the thermooptic coefficient of this liquids at this wavelength

Paper Details

Date Published: 18 November 2013
PDF: 7 pages
Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 87854S (18 November 2013); doi: 10.1117/12.2026234
Show Author Affiliations
E. López Lago, Univ. de Santiago de Compostela (Spain)
J. A. Nóvoa, Univ. de Vigo (Spain)
D. Nóvoa, Ctr. de Láseres Pulsados (Spain)
H. Michinel, Univ. de Vigo (Spain)
O. Cabeza, Univ. da Coruña (Spain)
J. R. Rodríguez, Univ. de Santiago de Compostela (Spain)
L. M. Varela, Univ. de Santiago de Compostela (Spain)


Published in SPIE Proceedings Vol. 8785:
8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications
Manuel Filipe P. C. Martins Costa, Editor(s)

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