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High-average-power 2 µm few-cycle optical parametric chirped pulse amplifier at 100 kHz repetition rate

 
: Shamir, Y.; Rothhardt, J.; Hädrich, S.; Demmler, S.; Tschernajew, M.; Limpert, J.; Tünnermann, A.

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Optics Letters 40 (2015), No.23, pp.5546-5549
ISSN: 0146-9592
English
Journal Article
Fraunhofer IOF ()

Abstract
Sources of long wavelengths few-cycle high repetition rate pulses are becoming increasingly important for a plethora of applications, e.g., in high-field physics. Here, we report on the realization of a tunable optical parametric chirped pulse amplifier at 100 kHz repetition rate. At a central wavelength of 2 μm, the system delivered 33 fs pulses and a 6 W average power corresponding to 60 μJ pulse energy with gigawatt-level peak powers. Idler absorption and its crystal heating is experimentally investigated for a BBO. Strategies for further power scaling to several tens of watts of average power are discussed.

: http://publica.fraunhofer.de/documents/N-418533.html