Project Title:

DIODE LASER INTRACAVITY TRACE GAS SPECTROMETER

Deacon Research
2440 Embarcadero Way
Palo Alto, CA 94303

93-1-08     20   6100

DIODE LASER INTRACAVITY TRACE GAS SPECTROMETER

Abstract:

An innovative approach to laser absorption spectroscopy with 
diode lasers is described. Our objective in this project is to
design, build and test the first-of-its kind intracavity laser 
absorption spectrometer for trace gas detection based on room
temperature diode lasers, which will surpass the performance of 
other laser absorption spectroscopic techniques. The instrument
will be advantageous over currently used techniques as a result 
of increased sensitivity and decreased complexity. In Phase I we
will set up the first model of the system and demonstrate the
intracavity spectroscopy mode of operation with a diode traveling
wave amplifier in an external cavity. The detection sensitivity
of the technique will be verified. In Phase II we will engineer
and construct a prototype system, which will be tested in
collaboration with NASA Goddard Space Flight Center personnel. 

The immediate application of the instrument will be for trace gas
concentration measurements. Commercial applications for this new
technology will develop in environmental monitoring, in
industrial process and quality control and in medicine.

laser spectroscopy, intracavity, absorption, trace gas,
atmospheric, diode laser