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Proceedings Paper

Optical limiting and photoprocesses of new indotricarbocyanine dye
Author(s): M. P. Samtsov; O. K. Bazyl; O. V. Smirnov; D. G. Melnikov; A. P. Lugovskiy
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Paper Abstract

The results of experimental and theoretical studies into the optical characteristics of a new indotricarbocyanine dye are presented indicating that this dye shows much promise as an effective (nonlinear) power limiter for laser radiation in the visible. The luminescent and energy characteristics of the dye molecules are experimentally studied, and the absorption spectra are given with nanosecond resolution. The electronic absorption spectra for the ground (S0→Sn) and excited (S1→Sn) states are calculated using the quantum-chemical methods. A nature of the electronic state of the molecule under study is established, and a rate constant of the intramolecular processes is determined. The theoretical results coordinate well with the experimental data. The investigated dye reveals singlet-singlet absorption in the region 400-600 nm. Excitation of the dye is realized by the second harmonic radiation of a Nd-YAG laser. The Z-scan method with the open diaphragm is used to determine the absorption cross-section of indotricarbocyanine dye upon 532 nm excitation. The nonlinear absorption characteristics of the given molecule are compared to the earlier results obtained for other polymethine dyes.

Paper Details

Date Published: 31 July 2007
PDF: 9 pages
Proc. SPIE 6728, ICONO 2007: Novel Photonics Materials; Optics and Optical Diagnostics of Nanostructures, 67283M (31 July 2007); doi: 10.1117/12.752479
Show Author Affiliations
M. P. Samtsov, Belarusian State Univ. (Belarus)
O. K. Bazyl, Tomsk State Univ. (Russia)
O. V. Smirnov, Tomsk State Univ. (Russia)
D. G. Melnikov, Belarusian State Univ. (Belarus)
A. P. Lugovskiy, Belarusian State Univ. (Belarus)


Published in SPIE Proceedings Vol. 6728:
ICONO 2007: Novel Photonics Materials; Optics and Optical Diagnostics of Nanostructures

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