Title :
A diode laser chemical sensor utilizing an oxidized lower cladding layer for high sensitivity
Author :
Wan, Chad S. ; Cohen, D.A. ; Nolde, Jill A. ; Lofgreen, Dan D. ; Coldren, Larry A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
We demonstrate a chemical sensor incorporating a self-aligned, symmetrically-clad high index contrast evanescent field sensing waveguide. Analyte overlap of 4.8% is obtained with a tightly confined mode, ideal for sensitive affinity assays.
Keywords :
chemical sensors; cladding techniques; laser modes; optical waveguides; oxidation; semiconductor lasers; chemical sensor; diode laser; evanescent field sensing waveguide; oxidized lower cladding layer; self-aligned symmetrical cladding; sensitive affinity assay; Biomedical optical imaging; Chemical sensors; Diode lasers; Etching; Optical mixing; Optical sensors; Optical surface waves; Optical waveguides; Semiconductor waveguides; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7888-1
DOI :
10.1109/LEOS.2003.1253139
