Operation at 1 MHz of 1.7-cycle multiple plate compression at 35-W average output power

Author:

Okamoto TakuyaORCID,Kunihashi Yoji,Shinohara YasushiORCID,Sanada Haruki,Chen Ming-Chang1ORCID,Oguri Katsuya

Affiliation:

1. National Tsing Hua University

Abstract

We generate 1.7-cycle and 35-µJ pulses at a 1-MHz repetition rate by using two-stage multiple plate continuum compression of Yb-laser pulses with 80-W average input power. By adjusting the plate positions with careful consideration of the thermal lensing effect due to the high average power, we compress the output pulse with a 184-fs initial duration to 5.7 fs by using only group-delay-dispersion compensation. This pulse achieves a sufficient beam quality (M2 < 1.5) reaching a focused intensity over 1014 W/cm2 and a high spatial-spectral homogeneity (98%). Our study holds promise for a MHz-isolated-attosecond-pulse source for advanced attosecond spectroscopic and imaging technologies with unprecedentedly high signal-to-noise ratios.

Funder

National Science and Technology Council

Japan Society for the Promotion of Science

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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