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

Award Information
Agency: Department of Defense
Branch: Office for Chemical and Biological Defense
Contract: W911SR-09-C-0050
Agency Tracking Number: C081-104-0029
Amount: $749,992.00
Phase: Phase II
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: CBD08-104
Solicitation Number: 2008.1
Small Business Information
Science and Engineering Services, Inc.
6992 Columbia Gateway Drive, Suite 200, Columbia, MD, 21046
DUNS: 783196348
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Coorg Prasad
 Vice President
 (443) 539-1731
 prasad@sesi-md.com
Business Contact
 Robert Serino
Title: Director of Operations
Phone: (443) 539-1735
Email: 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 9.5-10.5µm 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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