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arXiv · 1901.03527

Compact 200 kHz HHG source driven by a few-cycle OPCPA

Anne Harth·Chen Guo·Yu-Chen Cheng·Arthur Losquin·Miguel Miranda·Sara Mikaelsson·Christoph M. Heyl·Oliver Prochnow·Jan Ahrens·Uwe Morgner·A. L'Huillier·Cord L. Arnold
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Abstract

We present efficient high-order harmonic generation (HHG) based on a high-repetition rate, few-cycle, near infrared (NIR), carrier-envelope phase stable, optical parametric chirped pulse amplifier (OPCPA), emitting 6fs pulses with 9{\mu}J pulse energy at 200kHz repetition rate. In krypton, we reach conversion efficiencies from the NIR to the extreme ultraviolet (XUV) radiation pulse energy on the order of ~10^{-6} with less than 3{\mu}J driving pulse energy. This is achieved by optimizing the OPCPA for a spatially and temporally clean pulse and by a specially designed high-pressure gas target. In the future, the high efficiency of the HHG source will be beneficial for high-repetition rate two-colour (NIR-XUV) pumpprobe experiments, where the available pulse energy from the laser has to be distributed economically between pump and probe pulses.

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Anne Harth, Chen Guo, Yu-Chen Cheng, Arthur Losquin, Miguel Miranda, Sara Mikaelsson, Christoph M. Heyl, Oliver Prochnow, Jan Ahrens, Uwe Morgner, A. L'Huillier, Cord L. Arnold. 2019-01-11. Compact 200 kHz HHG source driven by a few-cycle OPCPA. https://doi.org/10.1088/2040-8986%2Faa9b04

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