Dynamic Multicomponent Optical Analyzer for Chemical Weapon (CW) Exposure Studies

Award Information
Agency:
Department of Defense
Branch
Office for Chemical and Biological Defense
Amount:
$749,992.00
Award Year:
2009
Program:
SBIR
Phase:
Phase II
Contract:
W911SR-09-C-0050
Agency Tracking Number:
C081-104-0029
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
SCIENCE & ENGINEERING SERVICES, INC.
6992 Columbia Gateway Drive, Suite 200, Columbia, MD, 21046
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
783196348
Principal Investigator:
Coorg Prasad
Vice President
(443) 539-1731
prasad@sesi-md.com
Business Contact:
Robert Serino
Director of Operations
(443) 539-1735
rserino@sesi-md.com
Research Institution:
n/a
Abstract
We propose to build in Phase II a compact, rugged laser photoacoustic spectrometric (L-PAS) prototype sensor system (at technology readiness level TRL-6) for continuous, real-time broadband analysis of multiple chemicals. It will incorporate a tunable infrared quantum cascade laser (QCL), photoacoustic cell and air sampler system in a sealed decontamination-capable module and an efficient algorithm for rapid high sensitivity, multi-component CW agent measurements in under a minute. In Phase I we have utilized a laboratory L-PAS instrument to successfully demonstrate feasibility through CWA simulant measurements in clean dry air and with multiple interferents. Several developments crucial for building compact field-usable sensor were completed, including: room temperature continuous-wave QCL in 9.5-10.5m range with >100mW output; single mode operation; mode-hop-free multi-step laser tuning over ~700nm wavelength range in <10sec with rapid (<30ms) settling between wavelengths; autonomous laser tuning software; and optimizing algorithms for retrieval of multi-component concentrations. Laboratory tests of L-PAS sensor performed with simulants DIMP and DMMP were analyzed to determine sensor performance: (DMMP detection limit <2ppb) and ROC curves. The prototype sensor will be field tested with simulants and agents in DoD test sites to qualify (TRL-6) and characterize the sensor after which it will be delivered to the sponsor.

* information listed above is at the time of submission.

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