Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Lasing of N+2 induced by filamentation in air as a probe for femtosecond coherent anti-Stokes Raman scattering

 
: Zhao, X.; Nolte, S.; Ackermann, R.

:

Optics Letters 45 (2020), No.13, pp.3661-3664
ISSN: 0146-9592
ISSN: 1539-4794
English
Journal Article
Fraunhofer IOF ()

Abstract
We investigated ultrashort pulse filamentation and lasing action of N+2 for pump-probe experiments in gases. Using femtosecond coherent anti-Stokes Raman scattering, the white-light supercontinuum generated in the filament was used to excite ro-vibrational Raman transitions in air, CO2 and CH4. We show that the lasing pulse acts as a probe for the excited levels by detecting the corresponding anti-Stokes Raman spectroscopy signals. This feature may be applied to remote sensing applications, as the temporal and spatial alignment of the probe beam and the filament is intrinsically provided.

: http://publica.fraunhofer.de/documents/N-602730.html