COMPACT RAMAN SPECTROGRAPH WITH FIBER OPTIC SAMPLING

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 18528
Amount: $372,397.00
Phase: Phase II
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Eic Laboratory, Inc.
111 Downey Street, Norwood, MA, 02062
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Michael M. Carrabba
 (617) 769-9450
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE OVERALL OBJECTIVE OF THIS PROGRAM IS TO DEVELOP A RAMAN SPECTROGRAPH FOR DETECTION AND IDENTFICATION OF CHEMICAL/BIOLOGICAL CONTAMINATION ON SURFACES, AND WHICH CAN BE ENGINEERED AS A FIELD HARDENED, COMPACT, LIGHTWEIGHT PORTABLE SYSTEM. THE PROPOSED SPECTROGRAPH WILL PERMIT A FULL (4000/CM) RAMAN SPECTRUM OF A SOLID, LIQUID OR GASEOUS SAMPLE TO BE OBTAINED IN A SINGLE RAPID MEASUREMENT WITHOUT INTERNAL MOVING PARTS OR CALIBRATION, SUCH AS ADJUSTMENT OF SLITS OR GRATINGS. THE DESIGN GOAL IS FOR LESS THAN 1/CM RESOLUTION. IN ITS FULLY DEVELOPED FORM, THE SPECTROGRAPH LASER USED FOR RAMAN EXCITATION, DETECTOR AND COMPUTER WILL BE MAN-PORTABLE. TO ACHIEVE THIS DEGREE OF PORTABILITY, A SMALL HIGH RESOLUTION ECHELLE SPECTROGRAPH HAS BEEN DESIGNED WHICH WILL INCORPORATE A SOLID STATE MICROLASER FOR EXCITATION AND A WIDE FORMAT TWO-DIMENSIONAL CHARGE COUPLED DEVICE (CCD) ARRAY FOR DETECTION. THE INSTRUMENT WILL ALSO EMPLOY A FIBER OPTIC PROBE FOR SAMPLING, WHICH WILL BE PARTICULARLY SUITABLE FOR SCANNING CONTAMINATED SURFACES AND INACCESSIBLE LOCATIONS. THE PROBE INCORPORATES A MICRO-OPTICAL TERMINATING HEAD CONTAINING FILTERS FOR REMOVAL OF SILICA FIBER RAMAN SCATTERING FROM THE SIGNAL. THE GOAL OF PHASE I IS TO CONSTRUCT AND CHARACTERIZE THE SPECTROGRAPH FOR OPERATION WITH CCD DETECTION AND SOLID STATE MICROLASER EXCITATION, AND TO EVALUATE IT FOR DETECTING SEVERAL AGENT SIMULANTS AS NEAT SAMPLES AND DISPERSED ONTO SUFACES WITH SEVERAL DIFFERENT OPTICAL BACKSCATTERING PROPERTIES AT CONCENTRATIONS LESS THAN OR EQUAL TO 1G/M2.

* information listed above is at the time of submission.

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