High-brightness switchable multiwavelength remote laser in air

By Jinping Yao, B. Zeng, Huailiang Xu, Guihua Li, W. Chu, J. Ni, Haisu Zhang, S. Chin, Ya Cheng, Zhi‐zhan Xu. 2011

215 citations recorded by the source corpus.

We demonstrate a harmonic-seeded switchable multiwavelength laser in air driven by intense midinfrared femtosecond laser pulses, in which population inversion occurs at an ultrafast time scale (i.e., less than \ensuremath{\sim}200 fs) owing to direct formation of excited molecular nitrogen ions by strong-field ionization of inner-valence electrons. The bright multiwavelength laser in air opens the perspective for remote detection of multiple pollutants based on nonlinear optical spectroscopy.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/fa1b0091cc6e82541ae1a37f36a60556829c060c