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Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystals
- Source :
- Opt. Lett. 45(14), 3925-3928 (2020)
- Publication Year :
- 2020
-
Abstract
- We demonstrate a novel dispersion-scan (d-scan) scheme for single-shot temporal characterization of ultrashort laser pulses. The novelty of this method relies on the use of a highly dispersive crystal featuring antiparallel nonlinear domains with a random distribution and size. This crystal, capable of generating a transverse second-harmonic signal, acts simultaneously as the dispersive element and the nonlinear medium of the d-scan device. The resulting in-line architecture makes the technique very simple and robust, allowing the acquisition of single-shot d-scan traces in real time. In addition, the technique can be further simplified by avoiding the need of dispersion pre-compensation. The retrieved pulses are in very good agreement with independent FROG measurements. We also apply the new single-shot d-scan to a TW-class laser equipped with a programmable pulse shaper, obtaining an excellent agreement between the applied and the d-scan retrieved dispersions.<br />Comment: 7 pages, 5 figures
- Subjects :
- Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Opt. Lett. 45(14), 3925-3928 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.2004.12706
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1364/OL.397033