Femtosecond two-photon-absorption-resona
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S.O Konorov; D.A Sidorov-Biryukov; I Bugar; D Chorvat Jr.; D Chorvat; A.M Zhelti
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Article
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2003
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Elsevier Science
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English
โ 309 KB
Four-wave mixing (FWM) with two-photon absorption (TPA) resonances is shown to allow time-resolved studies of ultrafast processes involved in photochromism in three-dimensional spiropyran/PMMA samples on the femtosecond time scale. An FWM signal was produced using 130-fs pulses of 800-nm Ti:sapphire