Lasing dynamics of neutral nitrogen molecules in femtosecond filaments

Pengji Ding; Eduardo Oliva; Aurélien Houard; André Mysyrowicz; Yi Liu

doi:10.1103/PhysRevA.94.043824

Lasing dynamics of neutral nitrogen molecules in femtosecond filaments

Pengji Ding
, Eduardo Oliva
, Aurélien Houard
, André Mysyrowicz
, Yi Liu

Université Paris-Saclay
Lanzhou University
Instituto de Fusión Nuclear
University of Shanghai for Science and Technology

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

42 Citations (Scopus)

Résumé

We investigate the dynamics of cavity-free lasing from neutral nitrogen molecules in femtosecond laser filaments. An important difference of intensity and temporal duration is observed between backward and forward lasing, in both amplified spontaneous emission and seed-amplification regimes. Numerical simulations based on a nonadiabatic Maxwell-Bloch model reproduce well the observations, and attribute these differences to the finite gain lifetime and the traveling excitation nature of this gas laser.

langue originale	Anglais
Numéro d'article	043824
journal	Physical Review A
Volume	94
Numéro de publication	4
Les DOIs	https://doi.org/10.1103/PhysRevA.94.043824
état	Publié - 17 oct. 2016
Modification externe	Oui

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10.1103/PhysRevA.94.043824

Contient cette citation

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title = "Lasing dynamics of neutral nitrogen molecules in femtosecond filaments",

abstract = "We investigate the dynamics of cavity-free lasing from neutral nitrogen molecules in femtosecond laser filaments. An important difference of intensity and temporal duration is observed between backward and forward lasing, in both amplified spontaneous emission and seed-amplification regimes. Numerical simulations based on a nonadiabatic Maxwell-Bloch model reproduce well the observations, and attribute these differences to the finite gain lifetime and the traveling excitation nature of this gas laser.",

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AU - Ding, Pengji

AU - Oliva, Eduardo

AU - Houard, Aurélien

AU - Mysyrowicz, André

AU - Liu, Yi

PY - 2016/10/17

Y1 - 2016/10/17

N2 - We investigate the dynamics of cavity-free lasing from neutral nitrogen molecules in femtosecond laser filaments. An important difference of intensity and temporal duration is observed between backward and forward lasing, in both amplified spontaneous emission and seed-amplification regimes. Numerical simulations based on a nonadiabatic Maxwell-Bloch model reproduce well the observations, and attribute these differences to the finite gain lifetime and the traveling excitation nature of this gas laser.

AB - We investigate the dynamics of cavity-free lasing from neutral nitrogen molecules in femtosecond laser filaments. An important difference of intensity and temporal duration is observed between backward and forward lasing, in both amplified spontaneous emission and seed-amplification regimes. Numerical simulations based on a nonadiabatic Maxwell-Bloch model reproduce well the observations, and attribute these differences to the finite gain lifetime and the traveling excitation nature of this gas laser.

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DO - 10.1103/PhysRevA.94.043824

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Lasing dynamics of neutral nitrogen molecules in femtosecond filaments

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