FUNCTIONALIZED LATERAL SURFACE COATED LASERS FOR CHEM-BIO DETECTION
We present a class of compact, monolithic, photonic sensors consisting of multiple section edge emitting lasers with functionalized lateral surface coatings for low level detection of chemical or biological agents. Specifically, we discuss 8 {micro}m x 250 {micro}m Pd-coated H{sub 2} sensors and configurations to reduce the minimum detection limit from 138ppm for passive sensors to 1ppm for active sensors. Compared with conventional optical H{sub 2} sensors that use fiber gratings, surface plasmon resonances, or surface reflectance, our sensors offer the advantages of smaller size, wider dynamic range, monolithic integration of laser source and detector, and 2-D scalability to arrays of sensors that are functionalized to detect different agents.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 920868
- Report Number(s):
- UCRL-CONF-232540; TRN: US0802037
- Resource Relation:
- Conference: Presented at: IEEE Sensors Conference, Atlanta, GA, United States, Oct 28 - Oct 31, 2007
- Country of Publication:
- United States
- Language:
- English
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