Functionalized Lateral Surface Coated Lasers for Chem-Bio Detection.

Goddard, L. L. ; Behymer, E. M. ; Bond, T. C. ; Cole, G. D.

Technical Information Center Oak Ridge Tennessee

关键词: Laser applications;    Biological detection;    Chemical detection;    Stimulants;    Surface coatings;   

RP-ID  :  DE2008920469

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We present a class of compact, monolithic, photonic sensors that consist of multiple section edge emitting lasers (EELs) with lateral surface coatings that are functionalized to detect low levels of chemical or biological stimulants. Specifically, we discuss a 10microm x 1000microm H2 sensor with a Pd coating and techniques to enhance the sensitivity by 35x and reduce the minimum detection limit (MDL) to 2ppm. Compared to conventional optical H2 sensors that use fiber gratings, surface plasmon resonances, or surface reflectance, our sensors offer the advantages of smaller size, monolithic integration of laser source and detector, and 1-D scalability to an array of sensors that are functionalized to detect different agents.