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

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	043824
Journal	Physical Review A
Volume	94
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.94.043824
Publication status	Published - 17 Oct 2016
Externally published	Yes

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10.1103/PhysRevA.94.043824

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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.",

author = "Pengji Ding and Eduardo Oliva and Aur{\'e}lien Houard and Andr{\'e} Mysyrowicz and Yi Liu",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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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.

U2 - 10.1103/PhysRevA.94.043824

DO - 10.1103/PhysRevA.94.043824

M3 - Article

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SN - 2469-9926

VL - 94

JO - Physical Review A

JF - Physical Review A

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Lasing dynamics of neutral nitrogen molecules in femtosecond filaments

Abstract

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