Title :
Differential absorption measurement by use of self-seeded gain-switched Fabry-Perot laser diode
Author :
Chen, J.W. ; Wang, D.N. ; Jin, W. ; Li, Z.N.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech., Kowloon, China
fDate :
11/7/2002 12:00:00 AM
Abstract :
Differential absorption measurement for acetylene has been carried out by the use of a self-seeded, gain-switched Fabry-Perot (FP) laser diode. During the measurement, the two wavelengths from the laser output can be conveniently selected by switching the repetition frequency The system has flexible wavelength tunability, larger sensitivity than those based on DFBs, and high potential for multipoint, multiple gas sensing.
Keywords :
Fabry-Perot resonators; Q-switching; gas sensors; laser cavity resonators; organic compounds; semiconductor lasers; spectrochemical analysis; acetylene; differential absorption measurement; flexible wavelength tunability; laser output wavelength selection; multipoint multiple gas sensing; repetition frequency switching; self-seeded gain-switched Fabry-Perot laser diode; sensitivity; switched two-wavelength outputs;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020976
