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Opt Express. 2011 Sep 12;19(19):18253-9. doi: 10.1364/OE.19.018253.

Experimental retrieval of the kinetic parameters of a dye in a solid film.

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1
Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue University, West Lafayette 47907, USA. jan.trieschmann@rub.de

Abstract

Effects of a solid matrix on the dye kinetic parameters for Rh800 were experimentally studied. Saturation intensity dependencies were measured with a seeding pulse amplification method using a picosecond and a femtosecond white light supercontinuum source. The kinetic parameters were obtained by fitting experimental dependencies with Yee's finite-difference time-domain model coupled to the rate equations of the 4-level Rh800-system. The comparison of these parameters (Rh800-solid host) with liquid host parameters revealed a slight change of the radiative lifetime and a strong change of the non-radiative decay rate. This experimentally determined model enables predictive simulations of time-domain responses of active metamaterials.

PMID:
21935192
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