Development of a Cavity Ringdown Laser Absorption Spectrometer for Detection of Trace Levels of Mercury
Applied Optics, Vol. 39, Issue 15, pp. 2480-2486 (2000)
http://dx.doi.org/10.1364/AO.39.002480
Acrobat PDF (138 KB)
Abstract
A potential new laser-based air pollution measurement technique, capable of measuring ultralow concentrations of urban air toxins in the field and in real time, is examined. Cavity ringdown laser absorption spectroscopy (CRLAS) holds promise as an air pollution monitor because it is a highly sensitive species detection technique that uses either pulsed or continuous tunable laser sources. The sensitivity results from an extremely long absorption path length and the fact that the quantity measured, the cavity decay time, is unaffected by fluctuations in the laser source. In laboratory experiments, we reach detection limits for mercury of the order of 0.50 parts per trillion. We developed a CRLAS system in our laboratory and measured Hg with the system, investigating issues such as background interference. We report experimental results for mercury detection limits, the dynamic range of the sensor, detection of Hg in an absorbing background of ozone and SO2, and detection of a mercury-containing compound (HgCl2 in this case).
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(230.0230) Optical devices : Optical devices
(300.1030) Spectroscopy : Absorption
(300.6540) Spectroscopy : Spectroscopy, ultraviolet
Citation
Scott Spuler, Mark Linne, Andy Sappey, and Stuart Snyder, "Development of a Cavity Ringdown Laser Absorption Spectrometer for Detection of Trace Levels of Mercury," Appl. Opt. 39, 2480-2486 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-15-2480
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- High-sensitivity intracavity laser absorption spectroscopy with vertical-external-cavity surface-emitting semiconductor lasers (OL)
- Tomographic Extreme-Ultraviolet Spectrographs: TESS (AO)
- Broadband Ringdown Spectral Photography (AO)
- Variable Pressure Infrared Diode Laser Spectroscopy: A New Method for Trace-Gas Monitoring (AO)
- Deep-ultraviolet cavity ringdown spectroscopy (OL)
Related Conference Papers
- A Novel Mid-Infrared Light Emitting Device
- Strong Photo-Absorption by a Single Quantum Wire in Waveguide-Transmission Measurement
- A Novel Self-Heterodyne Method for Combined Temporal and Spectral High Resolution Measurement of Wavelength Transients in Tunable Lasers
- Reliable Super Resolution Beam Profiler for Lasers in Manufacturing
- Measurement of angular deviation in ultra-linear mirror actuators for scanning high finesse resonators
« Previous Article | Next Article »
OSA is a member of 