Abstract

We demonstrate self-compression of 98 fs near-infrared laser pulses down to 8.8 fs in ambient air, utilizing self-phase modulation in air and negative dispersion in the properties of a laser-induced plasma. The blueshifted pulses achieve self-compression through conical radiation, eliminating the need for additional dispersion compensation. The results highlight a simple and compact approach to generate sub-10 fs laser pulses without additional measures for time-resolved applications in ultrafast diagnostics and spectroscopy.

© 2023 Optica Publishing Group

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)

Dispersion-engineered multi-pass cell for single-stage post-compression of an ytterbium laser

Laura Silletti, Ammar bin Wahid, Esmerando Escoto, Prannay Balla, Supriya Rajhans, Katinka Horn, Lutz Winkelmann, Vincent Wanie, Andrea Trabattoni, Christoph M. Heyl, and Francesca Calegari
Opt. Lett. 48(7) 1842-1845 (2023)

Spectral broadening of 2-mJ femtosecond pulses in a compact air-filled convex–concave multi-pass cell

Alan Omar, Tim Vogel, Martin Hoffmann, and Clara J. Saraceno
Opt. Lett. 48(6) 1458-1461 (2023)

Optoelectronic properties of black silicon fabricated by femtosecond laser in ambient air: exploring a large parameter space

Behrad Radfar, Kexun Chen, Olli E. Setälä, Ville Vähänissi, Hele Savin, and Xiaolong Liu
Opt. Lett. 48(5) 1224-1227 (2023)

Self-compression of femtosecond deep-ultraviolet pulses by filamentation in krypton

Shunsuke Adachi and Toshinori Suzuki
Opt. Lett. 42(10) 1883-1886 (2017)