Hamburg 2009 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 10: Ultrakurze Pulse: Erzeugung I
Q 10.7: Talk
Monday, March 2, 2009, 15:30–15:45, VMP 8 R206
Fourfold self-compression of 120-fs pulses in a white-light filament — •J. Bethge1, G. Stibenz2, P. Staudt2, H. Redlin3, S. Düsterer3, C. Brée4,1, A. Demircan4, and G. Steinmeyer1 — 1Max-Born-Institut, Berlin — 2Angewandte Physik und Elektronik GmbH (APE), Berlin — 3Deutsches Elektronen-Synchrotron (DESY), Hamburg — 4Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Berlin
Self-compression in whitelight filaments has opened remarkable new opportunities for compressing energetic pulses from a few ten femtosecond duration down into the sub-10 fs range [1]. Other than hollow fiber compressors, filament compression is neither limited by optical damage to the guiding structure nor does it require external dispersion compensation. However, so far self-compression has only been demonstrated with rather short input pulses. Moreover, this scheme was found to work only in a small parameter range and showed an increased sensitivity towards fluctuations of the input pulses. We use a 10 Hz Ti:sapphire laser system with 3.5 mJ pulse energy at the DESY FLASH facility. Using this laser we demonstrate a fourfold self-compression from 120 fs before filamentary propagation into 30 fs pulses after the filament, clearly indicating the universality of the self-compression mechanism in filaments. The self-compression measured with LX-SPIDER complies with the predictions of an improved analytical model [2].
C. P. Hauri, et al., Appl. Phys. B 79, 673 (2004).
C. Brée, et al., submitted to Phys. Rev. Lett. (2008).