Milliwatt-class broadband THz source driven by a 112 W, sub-100 fs thin-disk laser
| Autor: | Martin Hoffmann, Yicheng Wang, F. Fobbe, Clara J. Saraceno, Negar Hekmat, Alan Omar, Frank Meyer, S. Mansourzadeh, Tim Vogel |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Terahertz radiation business.industry 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics law.invention Terahertz spectroscopy and technology 010309 optics Optical rectification Optics Thin disk law Fiber laser 0103 physical sciences Broadband Center frequency 0210 nano-technology business |
| Zdroj: | Optics Express. 27:30340 |
| ISSN: | 1094-4087 |
| Popis: | 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 µJ 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. |
| Databáze: | OpenAIRE |
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