Journal
OPTICS EXPRESS
Volume 26, Issue 20, Pages 26750-26757Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.026750
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Funding
- H2020 European Research Council (ERC Advanced Grant) [AttoClock-320401]
- Swiss National Science Foundation (SNSF) projects [200021_159975, 200020_172644]
- Swiss National Science Foundation (SNF) [200021_159975, 200020_172644] Funding Source: Swiss National Science Foundation (SNF)
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We present a high-power mid-infrared (mid-IR) optical parametric chirped-pulse amplifier (OPCPA) generating 14.4 fs pulses centered at 2.5 mu m with an average power of 12.6 W and a repetition rate of 100 kHz. The short pulses are obtained without nonlinear pulse compression. This is in contrast to most few-cycle systems operating in the mid-IR. In our case, the ultrashort pulse duration is enabled by a careful design of the gain profile of each amplification stage as well as a precise control of the signal dispersion throughout the system. A pulse shaper is used in the seed beam to adjust the spectral phase at the output of the OPCPA system. This approach allows for a clean temporal profile leading to a high peak power of 6.3 GW. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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