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Off-Axis ICOS
STATUS
Operational Device Or Product
AVAILABILITY
Some species are already available (e.g. CH4, CO2, H2O isotopes, CH4 isotopes, ...), and the basic instrument platform has been developed. Other species can be readily added with minimal development effort, and packaged according to researchers' needs.
REQUEST PROCEDURE
For further information, contact Los Gatos Research by email at: sales@lgrinc.com
Emerging Technologies
Los Gatos Research has developed and is commercializing a technology termed Off-Axis Integrated Cavity Output Spectroscopy (Off-Axis ICOS) for atmospheric sensing of key gases and isotopes. The technology entails using laser absorption spectrometry (UV througth infrared) coupled with a high-finesse optical cavity to provide extraordinarily long effective optical pathlengths (e.g. 10 km,typical) in a compact, field-portable analzyer. This pathlength enhancement allows for real-time sensing of a variety of environmental gases, including CH4, CO2, CO, H2O, NO, N2O, O2, H2, H2S, NO2, SO2, HCl, HF, HBr, and many other species. Moreover, it can quantify isotopes in many of the aforementioned species (e.g. D/H, 18O/16O, 13C/12C, etc...) without any user-intervention or extensive training. Finally, the technology can be packaged into a vareity of form-factors to permit ground-based monitoring, airborne integration, and deep-sea studies. The technology is currently being commercialized and is already deployed by a few atmospheric researchers for CH4 flux and isotopes in liquid water.
CONTACT
Dr. Manish Gupta
Los Gatos Research
67 East Evelyn Avenue, Suite 3 Mountain View, CA 94041
650-965-7772
m.gupta@lgrinc.com
www.lgrinc.com
SPECIFICATIONS
DeveloperDr. Manish Gupta
Development SectorIndustry
R&D ProgramYes
Years Till Available<3
Investment Required<$100k
Projected ApplicationGreenhouse gas monitoring, isotope monitoring, hydrology, atmospheric studies
Unit Cost$10k-$100k
Key RisksMay not be applicable in all environments or gas mixtures. The specific target must be identified to assess the applicability of the technology.
Ease of Useunattended
PlatformsGround
Balloon
Aircraft
UAV
Ship
TRLN/A
REFERENCES
Several papers have been published describing the technique and its implementation for atmospheric sensing. See, for example: "Cavity-Enhanced Quantum-Cascade Laser-Based Instrument for Carbon Monoxide" R. Provencal, M. Gupta, T. Owano, D.S. Baer, K. Ricci, A. O’Keefe, and J. Podolske, Applied Optics, Vol. 44, pages 6712-6717 (2005) "Sensitive absorption measurements in the near-infrared region using off-axis integrated-cavity-output spectroscopy" D.S. Baer, J.B. Paul, M. Gupta, and Anthony O’Keefe, Appl. Phys. B.,, Vol. 75, pages 261-265 (2002). "Off-axis cavity ringdown spectroscopy: application to atmospheric nitrate radical detection" J.D. Ayers, R. L. Apodaca, W. R. Simpson, and D. S. Baer, Applied Optics, Vol. 44, pages 7239-7242 (2005).
REMARKS
none
UPDATED ON
9 Oct 2009 15:28