Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Ultrakurze Laserpulse: Anwendungen 3
Q 56.3: Vortrag
Donnerstag, 17. März 2011, 15:00–15:15, SCH A215
Measuring the carrier-envelope phase of ultra-intense few-cycle laser pulses — •Felix Mackenroth, Antonino Di Piazza, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
In order to produce ultra-strong laser fields tight temporal focussing of the laser field down to only a few cycles of the carrying electromagnetic wave is usually required. In such few-cycle pulses physical phenomena exhibit a dependence on the relative phase between the carrier wave and the envelope function, also known as the carrier-envelope phase (CEP). It is therefore desirable to have available a determination scheme for the CEP, which in principle can operate at arbitrarily high intensities. Conventional schemes based on atomic physics only allow determination of the CEP of laser fields with intensities up to about 1016 W/cm2, which is well below already available peak laser intensities of the order of 1022 W/cm2 [1]. We show that the CEP of such intense pulses can in principle be determined from the angular distribution of the photons emitted by an electron via multiphoton Compton scattering off the strong few-cycle laser pulse [2].
[1] V. Yanovsky et al., Opt. Express 3, 16 (2008).
[2] F. Mackenroth, A. Di Piazza, and C. H. Keitel, Phys. Rev. Lett. 105, 063903 (2010).