Journal
OPTICS EXPRESS
Volume 27, Issue 21, Pages 30340-30349Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.030340
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Funding
- Deutsche Forschungsgemeinschaft [CRC/TRR196, EXC2033]
- Alexander von HumboldtStiftung
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We demonstrate a high repetition-rate, single-cycle THz source with a maximum average power of 1.35 mW, operating at a center frequency of 2 THz. This result was obtained by optical rectification (OR) in GaP using an amplifier-free, nonlinearly compressed modelocked thin-disk oscillator based on Yb:YAG, delivering 8.4 mu J pulses with 88 fs duration at a repetition rate of 13.4 MHz, resulting in driving pulses for OR with 112 W average power and 80 MW peak power. To the best of our knowledge, our result represents the highest average power so far achieved with OR in GaP. The demonstrated performance is very attractive for improving current linear THz time-domain spectroscopy experiments, which are currently restricted by low signal-to-noise ratio and long measurement times. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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