Abstract

We propose a simple and robust all-optical pulse sampling method to characterize the temporal profiles of ultrashort laser pulses. The method is based on a third-harmonic generation (THG) process with perturbation in ambient air, which requires no retrieval algorithm and can be potentially applied to electric field measurement. The method has been successfully used to characterize multi-cycle and few-cycle pulses with a spectral range from 800 nm to 2200 nm. Considering the broad phase-matching bandwidth of THG and extremely low dispersion of air, this method is suitable for ultrashort pulse characterization even for single-cycle pulses in the near- to mid-infrared range. Thus, the method provides a reliable and highly accessible approach for pulse measurement in ultrafast optics research.

© 2023 Optica Publishing Group

All-optical sampling of ultrashort laser pulses based on perturbed transient grating

Pei Huang, Hao Yuan, Huabao Cao, Hushan Wang, Xianglin Wang, Yishan Wang, Wei Zhao, and Yuxi Fu
Opt. Lett. 47(20) 5369-5372 (2022)

Self-compression of femtosecond laser pulses in ambient air through conical radiation

Xinhua Xie, Adrian L. Cavalieri, and Steven L. Johnson
Opt. Lett. 48(19) 5101-5104 (2023)

Temporal characterization of broadband femtosecond laser pulses by surface third-harmonic dispersion scan with ptychographic retrieval

Tiago Gomes, Miguel Canhota, and Helder Crespo
Opt. Lett. 47(15) 3660-3663 (2022)

Generation of high-energy, sub-20 fs deep-UV pulses in a twin-crystal third harmonic generation scheme

Peter Susnjar, Gabor Kurdi, Paolo Cinquegrana, Alexander Demidovich, Ivaylo Nikolov, Paolo Sigalotti, and Miltcho B. Danailov
Opt. Lett. 49(8) 2033-2036 (2024)

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)