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Title: FUNCTIONALIZED LATERAL SURFACE COATED LASERS FOR CHEM-BIO DETECTION

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.
Authors: ; ; ;
Publication Date:
OSTI Identifier:OSTI ID: 920868
Report Number(s):UCRL-CONF-232540
TRN: US0802037
DOE Contract Number:W-7405-ENG-48
Resource Type:Conference
Resource Relation:Conference: Presented at: IEEE Sensors Conference, Atlanta, GA, United States, Oct 28 - Oct 31, 2007
Research Org:Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 42 ENGINEERING; 42 ENGINEERING; DETECTION; FIBERS; LASERS; PLASMONS; SENSITIVITY; SURFACE COATING