Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 14: Anwendung ultrakurzer Lichtimpulse I

Q 14.3: Vortrag

Montag, 19. März 2007, 17:00–17:15, 5K

New polarization pulse shaping techniques — •Stefan Martin Weber, Fabian Weise, Mateusz Plewicki, and Albrecht Lindinger — Institut f. Experimentalphysik, FU Berlin, Arnimallee 14, 14195 Berlin

The manipulation of the polarization state of femtosecond laser pulses is an emerging topic in the expanding field of coherent control. Such pulses are optimally suited for the interaction with real-world, three-dimensional quantum objects found on the molecular scale [1]. We present two major improvements to the original shaper setup, one by adding the amplitude [2], and another that employs two paths that interferometrically, fully controls the three-dimensional electrical field [3].

The capabilities and stability of the two setups are demonstrated, and a feedback-loop application that optimizes the ionization of the NaK dimer in a molecular beam is presented. We compare results from free and parametric optimizations, using a temporal sub-pulse encoding of the parameters: distance, intensity, zero order spectral phase, and polarization state [4].

[1] T. Brixner et al., PRL 92, 208301 (2004)

[2] M. Plewicki et al., Independent control over the amplitude, phase, and polarization of femtosecond pulses, Appl. Phys. B (in press), DOI: 10.1007/s00340-006-2464-y

[3] M. Plewicki et al., Appl. Opt. 45, 8354 (2006)

[4] S. M. Weber et al., Parametric phase, amplitude, and polarization shaping on molecules, submitted to Phys. Rev. A. (2006)