PI-FROSt characterization of solid-state harmonics with spectra spanning over 2.6 octaves
We present a comprehensive characterization of an ultra-broadband laser field across the visible–mid-infrared (MIR) spectral region. The radiation consists of a series of harmonic fields generated in a ZnO crystal by a long-wavelength, few-cycle driving pulse operating at 100 kHz. The characterizati...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2025
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| Sorozat: | OPTICS AND LASER TECHNOLOGY
190 |
| Tárgyszavak: | |
| doi: | 10.1016/j.optlastec.2025.113039 |
| mtmt: | 36162248 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/39374 |
| Tartalmi kivonat: | We present a comprehensive characterization of an ultra-broadband laser field across the visible–mid-infrared (MIR) spectral region. The radiation consists of a series of harmonic fields generated in a ZnO crystal by a long-wavelength, few-cycle driving pulse operating at 100 kHz. The characterization relies on the recently developed Plasma-Induced Frequency Resolved Optical Switching (PI-FROSt) method. In this study, we demonstrate the ability of this straightforward method to characterize, with the same nonlinear architecture, the MIR driving field centered at a wavelength around 3.2μm, along with all (odd and even) harmonics up to the fifth order. The total spectrum spans over an exceptionally broad bandwidth of 2.6 octaves, ranging from 0.59 to 3.6μm. All assessments confirm the high reliability and suitability of PI-FROSt for the metrology of over-octave-spanning waveforms, representing an effective solution for characterizing unconventional secondary sources. The field reconstruction provides valuable insights into the generation mechanisms, which can serve as a guideline to support numerical modeling. © 2025 Elsevier Ltd |
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| Terjedelem/Fizikai jellemzők: | 10 |
| ISSN: | 0030-3992 |