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29 May 2002 Investigation of relaxation times of polymethine dyes absorbing in 750-850 nm spectral range
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Proceedings Volume 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields; (2002) https://doi.org/10.1117/12.469097
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus
Abstract
The relaxation times ((tau) ) of the first excited state of cationic symmetric polymethine dyes absorbing in the spectral range of 750 - 850 nm have been determined by a direct pump and probe method. The influence of the dye structure and solvent nature on the value of (tau) is discussed. The role of different intra- and intermolecular interactions in deactivation of the excited state of the dyes is considered. The perspective polymethine dyes ((tau) equals 11 - 75 ps) for passive mode locking of lasers on LiGaAlF6:Cr3+, KZnF3:Cr3+, and LiSrAlF6:Cr3+ crystals are proposed from the analysis of relaxation times.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
N. Derevyanko, Rimantas Grigonis, Alexander Ishchenko, and Valdas Sirutkaitis "Investigation of relaxation times of polymethine dyes absorbing in 750-850 nm spectral range", Proc. SPIE 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields, (29 May 2002); https://doi.org/10.1117/12.469097
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