The nature of excited-state absorption in polymethine and squarylium molecules

Subpicosecond transient absorption measurements were performed for several polymethine and squarylium dyes in ethanol solution and a polymeric host over the spectral range 400-1500 nm. A variety of nonlinear effects including saturable absorption, reverse saturable absorption, and gain were observed...

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Veröffentlicht in:	IEEE journal of selected topics in quantum electronics 2001-09, Vol.7 (5), p.849-863
Hauptverfasser:	Negres, R.A., Przhonska, O.V., Hagan, D.J., Van Stryland, E.W., Bondar, M.V., Slominsky, Y.L., Kachkovski, A.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Anisotropic magnetoresistance Bands Bonding Chemicals Dyes Ethyl alcohol Excitation Femtosecond Laser theory Mathematical analysis Nonlinear optics Optical pumping Performance evaluation Physics education Quantum chemistry Spectra Ultrafast optics
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