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Improving carrier-envelope phase stability in optical parametric chirped-pulse amplifiers by control of timing jitter

: Hädrich, Steffen; Rothhardt, Jan; Krebs, Manuel; Demmler, Stefan; Limpert, Jens; Tünnermann, Andreas


Optics Letters 37 (2012), No.23, pp.4910-4912
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()

It is shown that timing jitter in optical parametric chirped-pulse amplification induces spectral drifts that transfer to carrier-envelope phase (CEP) instabilities via dispersion. Reduction of this effect requires temporal synchronization, which is realized with feedback obtained from the angularly dispersed idler. Furthermore, a novel method to measure the CEP drifts by utilizing parasitic second harmonic generation within parametric amplifiers is presented. Stabilization of the timing allows the obtainment of a CEP stability of 86 mrad over 40 min at 150 kHz repetition rate.