Abstract
We present the application of a compact setup for real-time
in situ trace-gas detection based on photothermal beam
deflection (mirage-effect) spectroscopy to environmental monitoring and
chemical analysis. The setup provides many advantages for local (nonremote)
detection applications, such as rapid response and high sensitivity under true
in situ conditions. The detection limit of
C2H4 in open air is estimated to
be 0.25 parts in 109, based on concentration
calibration with the dominant noise that is due to atmospheric turbulence on a
time scale of 1 s. Detection limits are extrapolated for other species,
and applications are explored by real-time measurements of gas emissions from
a variety of solid and semisolid samples.
© 1997 Optical Society of America
Full Article |
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Figures (10)
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Tables (2)
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Equations (2)
You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription