Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 54: Poster 3

Q 54.39: Poster

Donnerstag, 15. März 2012, 16:30–19:00, Poster.I+II

Compression and control of ultra short laser pulses applying Phase Resolved Interferometric Spectral Modulation (PRISM) — •Tillmann Kalas, Hendrike Braun, Jens Köhler, Matthias Wollenhaupt, and Thomas Baumert — University of Kassel, Institute of Physics and CINSaT, D-34132 Kassel, Germany

We present experimental results on spectral domain pulse shaper based ultra short laser pulse compression and control. Experiments involving ultra short laser pulses rely on proper compression techniques to compensate dispersion and phase distortions accumulated on the optical path to the interaction volume. On our home build precision pulse shaper [1] we implement the novel pulse compression technique PRISM (Phase Resolved Interferometric Spectral Modulation) [2]. One advantage of the PRISM-method is that it does not need any parametrization of the spectral phase function. Furthermore, unlike the MIIPS-technique (Multiphoton Intrapulse Interference Phase Scan) in which the spectrally dispersed second harmonic spectrum is measured, PRISM only requires a measurement of the integrated nonlinear signal. We present applications of PRISM to pulse compression in a commercial microscope and a vacuum champer, exploiting nonlinear signals like two photon induced photodiode current and multiphoton ionization (MPI) of Xe. We additionally show that PRISM can also be used for the optimization of user-defined contrasts in the spectrum of second harmonic generated radiation (SHG).

[1] J. Köhler et al.: Opt. Express, 19(12), 11638(2011)

[2] T. Wu et al.: Opt. Express, 19(14), 12961(2011)