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Femtosecond two-photon-excited backward lasing of atomic hydrogen in a flame

Ding, Pengji LU orcid ; Ruchkina, Maria LU ; Yi, L. I.U. ; Alden, Marcus LU and Bood, Joakim LU (2018) In Optics Letters 43(5). p.1183-1186
Abstract

We report on an observation of bi-directional 656 nm lasing action of atomic hydrogen in a premixed CH4∕air flame induced by resonant femtosecond 205 nm two-photon excitation. In particular, the backward-propagating lasing pulse is characterized in the spatial and temporal domains for the sake of a single-ended diagnostic. Its picosecond-scale duration and smooth temporal profile enable spatially resolved detection of hydrogen atoms in the millimeter range, which is successfully demonstrated using two narrow welding flames.

Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
43
issue
5
pages
4 pages
publisher
Optical Society of America
external identifiers
  • pmid:29489811
  • scopus:85042689281
ISSN
0146-9592
DOI
10.1364/OL.43.001183
language
English
LU publication?
yes
id
60390fa0-87d9-4a69-ae8d-7b7d703e7c4f
date added to LUP
2018-03-16 15:52:00
date last changed
2024-04-15 03:51:18
@article{60390fa0-87d9-4a69-ae8d-7b7d703e7c4f,
  abstract     = {{<p>We report on an observation of bi-directional 656 nm lasing action of atomic hydrogen in a premixed CH<sub>4</sub>∕air flame induced by resonant femtosecond 205 nm two-photon excitation. In particular, the backward-propagating lasing pulse is characterized in the spatial and temporal domains for the sake of a single-ended diagnostic. Its picosecond-scale duration and smooth temporal profile enable spatially resolved detection of hydrogen atoms in the millimeter range, which is successfully demonstrated using two narrow welding flames.</p>}},
  author       = {{Ding, Pengji and Ruchkina, Maria and Yi, L. I.U. and Alden, Marcus and Bood, Joakim}},
  issn         = {{0146-9592}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{5}},
  pages        = {{1183--1186}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Letters}},
  title        = {{Femtosecond two-photon-excited backward lasing of atomic hydrogen in a flame}},
  url          = {{https://lup.lub.lu.se/search/files/119484384/ol_43_5_1183.pdf}},
  doi          = {{10.1364/OL.43.001183}},
  volume       = {{43}},
  year         = {{2018}},
}