Abstract

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.

© 2022 Optica Publishing Group

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

F. J. Salgado-Remacha, B. Alonso, H. Crespo, C. Cojocaru, J. Trull, R. Romero, M. López-Ripa, P. T. Guerreiro, F. Silva, M. Miranda, A. L’Huillier, C. L. Arnold, and Í. J. Sola
Opt. Lett. 45(14) 3925-3928 (2020)

Nano–dispersion–scan: measurement of sub-7-fs laser pulses using second-harmonic nanoparticles

Óscar Pérez-Benito and Rosa Weigand
Opt. Lett. 44(20) 4921-4924 (2019)

Full characterization of 8  fs deep UV pulses via a dispersion scan

Ayhan Tajalli, Thomas K. Kalousdian, Martin Kretschmar, Sven Kleinert, Uwe Morgner, and Tamas Nagy
Opt. Lett. 44(10) 2498-2501 (2019)

Direct sampling of ultrashort laser pulses using third-harmonic generation with perturbation in ambient air

Pei Huang, Hao Yuan, Huabao Cao, Hushan Wang, Xianglin Wang, Yishan Wang, Wei Zhao, and Yuxi Fu
Opt. Lett. 48(8) 2154-2157 (2023)

Few-cycle optical pulse characterization via cross-polarized wave generation dispersion scan technique

Ayhan Tajalli, Bruno Chanteau, Martin Kretschmar, Heiko.G. Kurz, David Zuber, Milutin Kovačev, Uwe Morgner, and Tamas Nagy
Opt. Lett. 41(22) 5246-5249 (2016)