Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystals

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Salgado Remacha, FJ (Author) Other; Alonso, B (Author) Other; Crespo, H (Author) FCUP; Cojocaru, C (Author) Other; Trull, J (Author) Other; Romero, R (Author) Other; Lopez Ripa, M (Author) Other; Guerreiro, PT (Author) Other; Silva, F (Author) Other; Miranda, M (Author) Other; L'Huillier, A (Author) Other; Arnold, CL (Author) Other; Sola, IJ (Author) Other

Journal

Title: Optics Letters

Vol. 45

Pages: 3921-3924

ISSN: 0146-9592

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 5 Citations

Other information

Authenticus ID: P-00S-CPE

DOI: 10.1364/ol.397033

Abstract (EN): 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. The retrieved pulses are in very good agreement with independent frequency-resolved optical grating measurements. We also apply the new single-shot d-scan to a terawatt-class laser equipped with a programmable pulse shaper, obtaining an excellent agreement between the applied and the d-scan retrieved dispersions. (C) 2020 Optical Society of America

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4