Accession Number : ADA299343
Title : Medical Gas Diagnosis Via Diode Laser Absorption Spectroscopy.
Descriptive Note : Midterm rept.,
Corporate Author : PRINCETON ELECTRONIC SYSTEMS INC CRANBURY NJ
Personal Author(s) : Sun, Steve ; Ghosh, Chuni
PDF Url : ADA299343
Report Date : 21 APR 1995
Pagination or Media Count : 19
Abstract : Development of a monitor to measure O2 and CO2 content in the expired air is the objective of this program. We use diode laser based combined wavelength and frequency modulation spectroscopy for detection of the O2 and CO2 in the expired air. A prototype for measuring O2 content was fabricated in November 1994. The prototype provides the necessary signal-to-noise ratio. The acquisition time constant was too long for accurate breath-by-breath oxygen content analysis. The long term system and laser stability have to be improved as well. In the current stage, a second prototype targeted on these issues is being fabricated.
Descriptors : *SPECTROSCOPY, *SEMICONDUCTOR DIODES, *LASERS, *DIAGNOSIS(MEDICINE), STABILITY, ACQUISITION, FREQUENCY MODULATION, SIGNAL TO NOISE RATIO, PROTOTYPES, SEMICONDUCTOR LASERS, GASES, ABSORPTION.
Subject Categories : Medicine and Medical Research
Electrical and Electronic Equipment
Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE