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two-photon absorption dynamics of rhodamine dyes |
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Authors: | P Sperber A Penzkofer |
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Institution: | (1) Naturwissenschaftliche Fakultät II - Physik, Universität Regensburg, 8400 Regensburg, Germany |
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Abstract: | The intensity-dependent transmission of picosecond ruby laser pulses of different duration through methanolic and ethanolic solutions of rhodamine B and rhodamine 6G is analysed. The transmission is affected by S0-S
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two-photon absorption, by stimulated emission at the pump-laser frequency, by amplified spontaneous emission and by excited-state absorption. Various parameters involving the two-photon absorption dynamics are determined by comparing experiments with numerical simulations. |
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