Journal article
Liquid detection with InGaAsP semiconductor lasers having multiple short external cavities.
Abstract
A liquid detection system consisting of a diode laser with multiple short external cavities (MSXC's) is reported. The MSXC diode laser operates single mode on one of 18 distinct modes that span a range of 72 nm. We selected the modes by setting the length of one of the external cavities using a piezoelectric positioner. One can measure the transmission through cells by modulating the injection current at audio frequencies and using …
Authors
Zhu X; Cassidy DT
Journal
Applied Optics, Vol. 35, No. 24, pp. 4689–4693
Publisher
Optica Publishing Group
Publication Date
August 20, 1996
DOI
10.1364/ao.35.004689
ISSN
1559-128X