Simultaneous detection of molecular oxygen and water vapor in the tissue optical window using tunable diode laser spectroscopy
(2008) In Applied Optics 47(12). p.2028-2034- Abstract
- We report on a newly developed diode-laser spectroscopic system for gas detection in scattering
media. Two pigtailed diode lasers are used, operating in a wavelength modulation scheme, to
simultaneously detect molecular oxygen at 760 nm and water vapour at 935 nm within the tissue
optical window (600 nm to 1.3 μm). Different modulation frequencies are used to distinguish
between the two wavelengths. No crosstalk can be observed between the gas contents of the two gas
channels. The system is made compact by using a computer board and performing software based
lock-in detection. The noise floor obtained corresponds to an absorption fraction of about 6 · 10−5
for both oxygen and... (More) - We report on a newly developed diode-laser spectroscopic system for gas detection in scattering
media. Two pigtailed diode lasers are used, operating in a wavelength modulation scheme, to
simultaneously detect molecular oxygen at 760 nm and water vapour at 935 nm within the tissue
optical window (600 nm to 1.3 μm). Different modulation frequencies are used to distinguish
between the two wavelengths. No crosstalk can be observed between the gas contents of the two gas
channels. The system is made compact by using a computer board and performing software based
lock-in detection. The noise floor obtained corresponds to an absorption fraction of about 6 · 10−5
for both oxygen and water vapour. The power of the technique is illustrated by preliminary results
from a clinical trial investigating the human sinuses. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/796116
- author
- Persson, Linda LU ; Andersson, Mats LU ; Lewander, Märta LU ; Svanberg, Katarina LU and Svanberg, Sune LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Optics
- volume
- 47
- issue
- 12
- pages
- 2028 - 2034
- publisher
- Optical Society of America
- external identifiers
-
- wos:000255761900010
- scopus:49949088449
- ISSN
- 2155-3165
- DOI
- 10.1364/AO.47.002028
- language
- English
- LU publication?
- yes
- id
- 20061dbc-d1d8-472b-8b62-561e709674e2 (old id 796116)
- date added to LUP
- 2016-04-01 12:23:17
- date last changed
- 2022-01-27 03:05:18
@article{20061dbc-d1d8-472b-8b62-561e709674e2,
abstract = {{We report on a newly developed diode-laser spectroscopic system for gas detection in scattering<br/><br>
media. Two pigtailed diode lasers are used, operating in a wavelength modulation scheme, to<br/><br>
simultaneously detect molecular oxygen at 760 nm and water vapour at 935 nm within the tissue<br/><br>
optical window (600 nm to 1.3 μm). Different modulation frequencies are used to distinguish<br/><br>
between the two wavelengths. No crosstalk can be observed between the gas contents of the two gas<br/><br>
channels. The system is made compact by using a computer board and performing software based<br/><br>
lock-in detection. The noise floor obtained corresponds to an absorption fraction of about 6 · 10−5<br/><br>
for both oxygen and water vapour. The power of the technique is illustrated by preliminary results<br/><br>
from a clinical trial investigating the human sinuses.}},
author = {{Persson, Linda and Andersson, Mats and Lewander, Märta and Svanberg, Katarina and Svanberg, Sune}},
issn = {{2155-3165}},
language = {{eng}},
number = {{12}},
pages = {{2028--2034}},
publisher = {{Optical Society of America}},
series = {{Applied Optics}},
title = {{Simultaneous detection of molecular oxygen and water vapor in the tissue optical window using tunable diode laser spectroscopy}},
url = {{https://lup.lub.lu.se/search/files/2902769/2370735.pdf}},
doi = {{10.1364/AO.47.002028}},
volume = {{47}},
year = {{2008}},
}