Kassab, Hadil and Groebmeyer, Sebastian and Schweinberger, Wolfgang and Hofer, Christina and Steinleitner, Philipp and Hoegner, Maximilian and Amotchkina, Tatiana and Gerz, Daniel and Knorr, Matthias and Huber, Rupert and Karpowicz, Nicholas and Pupeza, Ioachim (2023) In-line synthesis of multi-octave phase-stable infrared light. OPTICS EXPRESS, 31 (15). pp. 24862-24874. ISSN 1094-4087
Full text not available from this repository. (Request a copy)Abstract
Parametric downconversion driven by modern, high-power sources of 10-fs-scale near-infrared pulses, in particular intrapulse difference-frequency generation (IPDFG), affords combinations of properties desirable for molecular vibrational spectroscopy in the mid-infrared range: broad spectral coverage, high brilliance, and spatial and temporal coherence. Yet, unifying these in a robust and compact radiation source has remained a key challenge. Here, we address this need by employing IPDFG in a multi-crystal in-line geometry, driven by the 100-W-level, 10.6-fs pulses of a 10.6-MHz-repetition-rate, nonlinearly post-compressed Yb:YAG thin-disk oscillator. Polarization tailoring of the driving pulses using a bichromatic waveplate is followed by a sequence of two crystals, LiIO3 and LiGaS2, resulting in the simultaneous coverage of the 800-cm(-1)-to-3000-cm(-1) spectral range (at -30-dB intensity) with 130 mW of average power. We demonstrate that optical-phase coherence is maintained in this in-line geometry, in theory and experiment, the latter employing ultra-broadband electro-optic sampling. These results pave the way toward coherent spectroscopy schemes like field-resolved and frequency-comb spectroscopy, as well as nonlinear, ultrafast spectroscopy and optical-waveform synthesis across the entire infrared molecular fingerprint region.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIFFERENCE-FREQUENCY-GENERATION; THIN-DISK OSCILLATOR; FEMTOSECOND PULSES; MU-M; OPTICAL RECTIFICATION; SPECTROSCOPY; TRANSIENTS; EFFICIENT; GASE; AMPLIFICATION |
| 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: | 05 Apr 2024 05:06 |
| Last Modified: | 05 Apr 2024 05:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60682 |
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