Ultrafast gain dynamics in N2+ lasing from highly excited vibrational states pumped by circularly polarized femtosecond laser pulses

Kaixuan Zhai; Ziting Li; Hongqiang Xie; Chenrui Jing; Guihua Li; Bin Zeng; Wei Chu; Jielei Ni; Jinping Yao; Ya Cheng

doi:10.3788/COL201513.050201

Ultrafast gain dynamics in N₂⁺ lasing from highly excited vibrational states pumped by circularly polarized femtosecond laser pulses

Kaixuan Zhai
, Ziting Li
, Hongqiang Xie
, Chenrui Jing
, Guihua Li
, Bin Zeng
, Wei Chu
, Jielei Ni
, Jinping Yao^*
, Ya Cheng

^*Corresponding author for this work

CAS - Shanghai Institute of Optics and Fine Mechanics
University of Chinese Academy of Sciences
Tongji University

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

14 Scopus citations

Abstract

We experimentally demonstrate N₂⁺ lasing actions at the wavelengths of 353.3, 353.8, and 354.9 nm using a circularly polarized femtosecond laser. The three laser lines correspond to the B²Ʃ_u⁺ (v'=5, 4, 3) →X²Ʃ_g⁺ (v'=4,3,2) transitions, respectively. Particularly, we reveal the pressure-dependent gain dynamics of these lasing actions from highly excited vibrational states with a pump-Cprobe scheme. Our experimental results confirm that electron collisional excitation plays an important role in the establishment of a population inversion of N₂⁺ lasing at these wavelengths.

Original language	English
Article number	050201
Journal	Chinese Optics Letters
Volume	13
Issue number	5
DOIs	https://doi.org/10.3788/COL201513.050201
State	Published - 10 May 2015
Externally published	Yes

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title = "Ultrafast gain dynamics in N2+ lasing from highly excited vibrational states pumped by circularly polarized femtosecond laser pulses",

abstract = "We experimentally demonstrate N2+ lasing actions at the wavelengths of 353.3, 353.8, and 354.9 nm using a circularly polarized femtosecond laser. The three laser lines correspond to the B2Ʃu+ (v'=5, 4, 3) →X2Ʃg+ (v'=4,3,2) transitions, respectively. Particularly, we reveal the pressure-dependent gain dynamics of these lasing actions from highly excited vibrational states with a pump-Cprobe scheme. Our experimental results confirm that electron collisional excitation plays an important role in the establishment of a population inversion of N2+ lasing at these wavelengths.",

author = "Kaixuan Zhai and Ziting Li and Hongqiang Xie and Chenrui Jing and Guihua Li and Bin Zeng and Wei Chu and Jielei Ni and Jinping Yao and Ya Cheng",

note = "Publisher Copyright: {\textcopyright} 2015 Chinese Optics Letters.",

year = "2015",

month = may,

day = "10",

doi = "10.3788/COL201513.050201",

language = "英语",

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T1 - Ultrafast gain dynamics in N2+ lasing from highly excited vibrational states pumped by circularly polarized femtosecond laser pulses

AU - Zhai, Kaixuan

AU - Li, Ziting

AU - Xie, Hongqiang

AU - Jing, Chenrui

AU - Li, Guihua

AU - Zeng, Bin

AU - Chu, Wei

AU - Ni, Jielei

AU - Yao, Jinping

AU - Cheng, Ya

PY - 2015/5/10

Y1 - 2015/5/10

N2 - We experimentally demonstrate N2+ lasing actions at the wavelengths of 353.3, 353.8, and 354.9 nm using a circularly polarized femtosecond laser. The three laser lines correspond to the B2Ʃu+ (v'=5, 4, 3) →X2Ʃg+ (v'=4,3,2) transitions, respectively. Particularly, we reveal the pressure-dependent gain dynamics of these lasing actions from highly excited vibrational states with a pump-Cprobe scheme. Our experimental results confirm that electron collisional excitation plays an important role in the establishment of a population inversion of N2+ lasing at these wavelengths.

AB - We experimentally demonstrate N2+ lasing actions at the wavelengths of 353.3, 353.8, and 354.9 nm using a circularly polarized femtosecond laser. The three laser lines correspond to the B2Ʃu+ (v'=5, 4, 3) →X2Ʃg+ (v'=4,3,2) transitions, respectively. Particularly, we reveal the pressure-dependent gain dynamics of these lasing actions from highly excited vibrational states with a pump-Cprobe scheme. Our experimental results confirm that electron collisional excitation plays an important role in the establishment of a population inversion of N2+ lasing at these wavelengths.

UR - https://www.scopus.com/pages/publications/84937605700

U2 - 10.3788/COL201513.050201

DO - 10.3788/COL201513.050201

M3 - 文章

AN - SCOPUS:84937605700

SN - 1671-7694

VL - 13

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 5

M1 - 050201

ER -

Ultrafast gain dynamics in N₂⁺ lasing from highly excited vibrational states pumped by circularly polarized femtosecond laser pulses

Abstract

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