Optimization of N2+ lasing through population depletion in the X2Σg+ state using elliptically modulated ultrashort intense laser fields
Year: 2020
Type: article
Abstract: The authors generate air lasing by elliptically-modulated intense femtosecond laser pulses and show that the lasing intensities of N${}_{2}$${}^{+}$ at 391 and 428 nm can be manipulated by adjusting the temporal separation between the two polarization components in the elliptically-modulated laser pulse and their relative amplitudes. The authors interpret this characteristic ellipticity dependence in terms of the post-ionization coupling occurring in the later part of the laser pulse, which depletes efficiently the population in the X${}_{2}$ ${\mathrm{\ensuremath{\Sigma}}}_{g}^{+}$ (v'' = 0) state.
Source: Physical Review Research
Authors: Yao Fu, Erik Lötstedt, Helong Li, Siqi Wang, Danwen Yao, Toshiaki Ando, Atsushi Iwasaki, Farhad H. M. Faisal, Kaoru Yamanouchi, Huailiang Xu
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W3000597323