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Diode Laser Raman Scattering Prototype for Continuous On-site Characterization…

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
1996 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
825 North, 300 West, Suite 225 Salt Lake City, UT 84103
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 1996
Title: Diode Laser Raman Scattering Prototype for Continuous On-site Characterization of Fuels and Environmental Contaminants
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $723,642.00


We propose developing a diode laser-based full-spectrum Raman scattering instrument prototype incorporating fiberoptic coupling for rapid, continuous on-line and remote monitoring of fuels. Raman's narrow, well-defined peaks and its insensitivity to moisture contamination allow for full-spectrum detection with 0.1% sensitivity for liquids and with 30 to 60 second response times. Traditional Raman scattering performed with visible light excitation is not compatible with liquid hydrocarbon systems because of background fluorescence. Conventional gas lasers have too short of a life and are too expensive for routine commercial instrumentation. A semiconductor laser diode offers longer life than conventional lasers and can operate at near-IR wavelengths where sample fluorescence is minimized while taking advantage of the very sensitive and full-spectrum capabilities of silicon CCD array Raman spectrum detection. Fiberoptic coupling allows the safe application of Raman scattering in hazardous environments, eliminates lag time, reduces maintenance of sample handling systems while affording remote location of vibration sensitive equipment. Laboratory results have demonstrated the ability to quickly measure gasoline components and parameters including individual aromatics, such as benzene, olefine contents, unique brand formulations, octane ratings and EPA-required oxygenated additives. Phase I will compare the prototype instrument with laboratory results.

Principal Investigator:

Lee M. Smith

Business Contact:

Small Business Information at Submission:

Process Instruments, Inc.
2400 Sunnyside Avenue Salt Lake City, UT 84108

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No