Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses

Rostyslav Danylo; Guillaume Lambert; Yi Liu; Vladimir Tikhonchuk; Aurélien Houard; André Mysyrowicz

doi:10.1364/OL.414863

Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses

Rostyslav Danylo
, Guillaume Lambert
, Yi Liu
, Vladimir Tikhonchuk
, Aurélien Houard
, André Mysyrowicz

Laboratory d'Optique Appliquée, ENSTA, CNRS-École Polytechnique
Shanghai Key Lab of Modern Optical System
University of Shanghai for Science and Technology
Chinese Academy of Sciences
Univ. Bordeaux
ELI-Beamlines
of Sciences

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

3 Citations (Scopus)

Abstract

The time profile of a lasing signal at 391.4 nm emitted by a weakly ionized gas of nitrogen molecules at low pressure is measured under double excitation with intense femtosecond laser pulses at 800 nm. An abrupt decrease in emission occurs at the time of arrival of the second pulse. It is explained by a transfer of population from ground to first excited ionic level and by a disruption of coherence, terminating the conditions for lasing in a V-scheme without population inversion.

Original language	English
Pages (from-to)	1253-1256
Number of pages	4
Journal	Optics Letters
Volume	46
Issue number	6
DOIs	https://doi.org/10.1364/OL.414863
Publication status	Published - 15 Mar 2021

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title = "Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses",

abstract = "The time profile of a lasing signal at 391.4 nm emitted by a weakly ionized gas of nitrogen molecules at low pressure is measured under double excitation with intense femtosecond laser pulses at 800 nm. An abrupt decrease in emission occurs at the time of arrival of the second pulse. It is explained by a transfer of population from ground to first excited ionic level and by a disruption of coherence, terminating the conditions for lasing in a V-scheme without population inversion.",

author = "Rostyslav Danylo and Guillaume Lambert and Yi Liu and Vladimir Tikhonchuk and Aur{\'e}lien Houard and Andr{\'e} Mysyrowicz",

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T1 - Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses

AU - Danylo, Rostyslav

AU - Lambert, Guillaume

AU - Liu, Yi

AU - Tikhonchuk, Vladimir

AU - Houard, Aurélien

AU - Mysyrowicz, André

PY - 2021/3/15

Y1 - 2021/3/15

N2 - The time profile of a lasing signal at 391.4 nm emitted by a weakly ionized gas of nitrogen molecules at low pressure is measured under double excitation with intense femtosecond laser pulses at 800 nm. An abrupt decrease in emission occurs at the time of arrival of the second pulse. It is explained by a transfer of population from ground to first excited ionic level and by a disruption of coherence, terminating the conditions for lasing in a V-scheme without population inversion.

AB - The time profile of a lasing signal at 391.4 nm emitted by a weakly ionized gas of nitrogen molecules at low pressure is measured under double excitation with intense femtosecond laser pulses at 800 nm. An abrupt decrease in emission occurs at the time of arrival of the second pulse. It is explained by a transfer of population from ground to first excited ionic level and by a disruption of coherence, terminating the conditions for lasing in a V-scheme without population inversion.

U2 - 10.1364/OL.414863

DO - 10.1364/OL.414863

M3 - Article

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AN - SCOPUS:85102913602

SN - 0146-9592

VL - 46

SP - 1253

EP - 1256

JO - Optics Letters

JF - Optics Letters

IS - 6

ER -

Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses

Abstract

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