Transient gain from $N_2^{+}$ in light filaments

Abstract

We perform high resolution spectroscopy of $N_2^{+}$ emission in light filaments using a controlled pump at 795 followed by a second harmonic weak probe. Our result suggests that transient gain is achieved by resonant stimulated Raman scattering.

11 pages, 4 figures

References in corpus (4)

• Population Redistribution among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields
• Recollision induced superradiance of ionized nitrogen molecules
• Near-resonant Raman amplification in the rotational quantum wavepackets of nitrogen molecular ions generated by strong field ionization
• Amplification of intense light fields by nearly free electrons

Cited by in corpus (7)

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• Role of rotational coherence in femtosecond-pulse-driven nitrogen ion lasing
• Exit momentum and instantaneous ionization rate of nonadiabatic tunneling ionization in elliptically polarized laser fields
• Quantum erasing of laser emission in N${}_2^{+}$
• N${}_2^{+}$ Lasing: Gain and Absorption in the Presence of Rotational Coherence
• Control of ${\text{N}}_2^{+}$ Air Lasing
• Electronic-vibrational dynamics and coherence in x-ray transient absorption of N2+ induced by strong-field ionization