Mid-infrared radiation generation in air by four-wave mixing of femtosecond laser pulses
Abstract Tunable mid-infrared radiation in the range of 2.06– $$12\,\mu $$ m was generated in air via loosely focused two-color femtosecond laser pulses. The emission spectra and beam profiles confirm its origin as four-wave difference-frequency mixing in a low-density air plasma filament. Near phase-matching due to low air dispersion opens possibilities for efficient energy conversion at high powers.
Authors
- V. Vaičaitis (ORCID: https://orcid.org/0000-0002-9084-8552)
- Shirly Espinoza (ORCID: https://orcid.org/0000-0002-2740-7156)
- Mateusz Rębarz (ORCID: https://orcid.org/0000-0002-5823-2432)
- Ona Balachninaitė
Institutions
- Vilnius University (LT)
- Extreme Light Infrastructure Beamlines (CZ)
Publication Details
- Journal
- Optical and Quantum Electronics
- Published
- 2026-04-15
- DOI
- https://doi.org/10.1007/s11082-026-08794-4
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00