Knorr, Matthias and Raab, Juergen and Tauer, Maximilian and Merkl, Philipp and Peller, Dominik and Wittmann, Emanuel and Riedle, Eberhard and Lange, Christoph and Huber, Rupert (2017) Phase-locked multi-terahertz electric fields exceeding 13 MV/cm at a 190 kHz repetition rate. OPTICS LETTERS, 42 (21). pp. 4367-4370. ISSN 0146-9592, 1539-4794
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We demonstrate a compact source of energetic and phase-locked multi-terahertz pulses at a repetition rate of 190 kHz. Difference frequency mixing of the fundamental output of an Yb:KGW amplifier with the idler of an optical parametric amplifier in GaSe and LiGaS2 crystals yields a passively phase-locked train of waveforms tunable between 12 and 42 THz. The shortest multi-terahertz pulses contain 1.8 oscillation cycles within the intensity full width at half-maximum. Pulse energies of up to 0.16 mu J and peak electric fields of 13 MV/cm are achieved. Electro-optic sampling reveals a phase stability better than 0.1 pi over multiple hours, combined with free carrier-envelope phase tunability. The scalable scheme opens the door to strong-field terahertz optics at unprecedented repetition rates. (C) 2017 Optical Society of America
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL PARAMETRIC AMPLIFICATION; MIDINFRARED PULSES; RESOLVED DETECTION; MID-IR; MU-M; GENERATION; SPECTROSCOPY; TRANSIENTS; GASE; CRYSTALS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 28 Feb 2019 11:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1969 |
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