Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses
Zhang, Xiang ; Danylo, Rostyslav ; Fan, Zhengquan ; Ding, Pengji LU
; Kou, Chenhao
; Liang, Qingqing
; Houard, Aurélien
; Tikhonchuk, Vladimir
; Mysyrowicz, André
and Liu, Yi
(2020)
In Applied Physics B: Lasers and Optics
126(3).
- Abstract
We report on the observation of backward lasing at 391.4 nm of nitrogen ions pumped by linearly polarized intense femtosecond pulses at 800 nm. The strongly enhanced spectral intensity at 391.4 nm, as well as the amplification of an externally injected backward seeding pulse, confirm that the backward 391.4 nm signal is due to optical amplification in the nitrogen gas plasma. Compared to the forward emission at 391.4 nm, the optimal backward emission is achieved at a lower gas pressure around 10 mbar, which is due to asymmetry of the backward and forward directions rooted in the traveling excitation geometry. Comparison of the signals in pure nitrogen and air revealed a strong quenching effect of the oxygen molecules, preventing... (More)
We report on the observation of backward lasing at 391.4 nm of nitrogen ions pumped by linearly polarized intense femtosecond pulses at 800 nm. The strongly enhanced spectral intensity at 391.4 nm, as well as the amplification of an externally injected backward seeding pulse, confirm that the backward 391.4 nm signal is due to optical amplification in the nitrogen gas plasma. Compared to the forward emission at 391.4 nm, the optimal backward emission is achieved at a lower gas pressure around 10 mbar, which is due to asymmetry of the backward and forward directions rooted in the traveling excitation geometry. Comparison of the signals in pure nitrogen and air revealed a strong quenching effect of the oxygen molecules, preventing backward lasing action in ambient air.
(Less)
- author
- Zhang, Xiang
; Danylo, Rostyslav
; Fan, Zhengquan
; Ding, Pengji
LU
; Kou, Chenhao
; Liang, Qingqing
; Houard, Aurélien
; Tikhonchuk, Vladimir
; Mysyrowicz, André
and Liu, Yi
- organization
- publishing date
- 2020-03-02
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics B: Lasers and Optics
- volume
- 126
- issue
- 3
- article number
- 53
- publisher
- Springer
- external identifiers
-
- scopus:85080993975
- ISSN
- 0946-2171
- DOI
- 10.1007/s00340-020-7402-x
- language
- English
- LU publication?
- yes
- id
- 87b74128-cac2-465c-ac95-ea67b773c5d2
- date added to LUP
- 2020-03-18 13:52:54
- date last changed
- 2022-04-18 21:08:31
@article{87b74128-cac2-465c-ac95-ea67b773c5d2,
abstract = {{<p>We report on the observation of backward lasing at 391.4 nm of nitrogen ions pumped by linearly polarized intense femtosecond pulses at 800 nm. The strongly enhanced spectral intensity at 391.4 nm, as well as the amplification of an externally injected backward seeding pulse, confirm that the backward 391.4 nm signal is due to optical amplification in the nitrogen gas plasma. Compared to the forward emission at 391.4 nm, the optimal backward emission is achieved at a lower gas pressure around 10 mbar, which is due to asymmetry of the backward and forward directions rooted in the traveling excitation geometry. Comparison of the signals in pure nitrogen and air revealed a strong quenching effect of the oxygen molecules, preventing backward lasing action in ambient air.</p>}},
author = {{Zhang, Xiang and Danylo, Rostyslav and Fan, Zhengquan and Ding, Pengji and Kou, Chenhao and Liang, Qingqing and Houard, Aurélien and Tikhonchuk, Vladimir and Mysyrowicz, André and Liu, Yi}},
issn = {{0946-2171}},
language = {{eng}},
month = {{03}},
number = {{3}},
publisher = {{Springer}},
series = {{Applied Physics B: Lasers and Optics}},
title = {{Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses}},
url = {{http://dx.doi.org/10.1007/s00340-020-7402-x}},
doi = {{10.1007/s00340-020-7402-x}},
volume = {{126}},
year = {{2020}},
}