| Autor: |
Gomes T, Canhota M, Crespo H |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2022 Aug 01; Vol. 47 (15), pp. 3660-3663. |
| DOI: |
10.1364/OL.460069 |
| Abstrakt: |
We present a new, to the best of our knowledge, variant of dispersion scan (d-scan) based on surface third-harmonic generation (STHG) and a ptychographic algorithm tailored for full retrieval (amplitude and phase) of broadband laser pulses. We demonstrate the technique by temporally measuring and compressing few-cycle pulses with 7 fs and 2.5 nJ from a Ti:sapphire oscillator, using a sapphire window as the nonlinear medium. The results are in very good agreement with standard second-harmonic d-scan measurements based on a nonlinear crystal. The intrinsically broadband and phase-matching-independent nature of STHG make this technique very suitable for the characterization of ultrashort laser pulses over a broad wavelength range extending into the mid-infrared. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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