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Sensitivity enhancement and fringe reduction in tunable diode laser spectroscopy using hemispherical diffusers

Lundin, Patrik LU ; Karlsson, Marcus; Mei, Liang LU ; Larsson, Jim LU ; Somesfalean, Gabriel LU and Svanberg, Sune LU (2017) In Review of Scientific Instruments 88(5).
Abstract

The use of diffuse, highly reflective optical components, in particular, a hemispherical BaSO4 diffuser, at the point of light injection into non-transparent or turbid media was evaluated as a means to increase the measurement sensitivity of spectroscopic absorption measurements. By performing the light injection from, e.g., an optical fiber through a component designed to make the light diffuse and to reflect (and thereby re-inject) light scattered from the sample, the total amount of light delivered into the sample is increased. Further, the occurrence of possible interference fringes is strongly reduced.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Review of Scientific Instruments
volume
88
issue
5
publisher
American Institute of Physics
external identifiers
  • scopus:85019708005
  • wos:000402801900021
ISSN
0034-6748
DOI
10.1063/1.4983807
language
English
LU publication?
yes
id
9652bfbc-a12a-463d-93bb-5213daf6c341
date added to LUP
2017-06-13 09:33:33
date last changed
2018-01-07 12:07:20
@article{9652bfbc-a12a-463d-93bb-5213daf6c341,
  abstract     = {<p>The use of diffuse, highly reflective optical components, in particular, a hemispherical BaSO<sub>4</sub> diffuser, at the point of light injection into non-transparent or turbid media was evaluated as a means to increase the measurement sensitivity of spectroscopic absorption measurements. By performing the light injection from, e.g., an optical fiber through a component designed to make the light diffuse and to reflect (and thereby re-inject) light scattered from the sample, the total amount of light delivered into the sample is increased. Further, the occurrence of possible interference fringes is strongly reduced.</p>},
  articleno    = {053111},
  author       = {Lundin, Patrik and Karlsson, Marcus and Mei, Liang and Larsson, Jim and Somesfalean, Gabriel and Svanberg, Sune},
  issn         = {0034-6748},
  language     = {eng},
  month        = {05},
  number       = {5},
  publisher    = {American Institute of Physics},
  series       = {Review of Scientific Instruments},
  title        = {Sensitivity enhancement and fringe reduction in tunable diode laser spectroscopy using hemispherical diffusers},
  url          = {http://dx.doi.org/10.1063/1.4983807},
  volume       = {88},
  year         = {2017},
}