Hamburg 2009 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 30: Poster II

Q 30.59: Poster

Tuesday, March 3, 2009, 16:30–19:00, VMP 9 Poster

Multiphoton absorption in BTO crystals — •Andrew Matusevich and Vladislav Matusevich — Institute of Applied Optics, Friedrich-Schiller-University, Max-Wien-Platz 1, 07743 Jena, Germany

We present experimental and theoretical investigations of the multiphoton absorption in photorefractive BTO crystals. A model for impurity centers characterized by different lifetimes is proposed to explain the dynamics of the photo-induced absorption. Cw-radiation as well as ns- and ps- pulses at 355nm, 532nm are used to investigate non-linear photoinduced absorption processes and show their bistable behaviour. We suppose that the multiphoton absorption in photorefractive crystals can be used for detection of ultra short pulses.