Abstract
We report on the progress of a laser sounding instrument using the pressure broadening of spectroscopic absorption lines of the diatomic oxygen A-band to deduce atmospheric pressure.. We have developed a pulsed, frequency-doubled, fiber laser transmitter. There are many uses for this measurement but we are developing it primarily to make a measurement of the dry mixing ratio of CO2. The CO2 measurement can be affected by changes in atmospheric properties such as humiditiy, temperature and pressure. To remove these variances requires measuring a stable, well-mixed gas like Oxygen.
We report on the basic theory behind the instrument, measurements made at a test site at Goddard, review the current state of the instrument and associated technologies and the necessary steps to improve performance.
© 2008 Optical Society of America
PDF ArticleMore Like This
Haris Riris, Michael D. Rodriguez, Graham R. Allan, William E. Hasselbrack, Mark A. Stephen, and James B. Abshire
LT2B.5 Laser Applications to Chemical, Security and Environmental Analysis (LACSEA) 2012
Mark Stephen, James Abshire, Jeffrey Chen, Kenji Numata, Stewart Wu, Brayler Gonzales, Michael Rodriguez, Graham Allan, William Hasselbrack, Anthony Yu, Molly Fahey, Jeffrey Nicholson, Anand Hariharan, William Mamakos, and Brian Bean
STu4A.2 Optical Sensors (Sensors) 2019
Clive D. Rodgers and Brian J. Connor
RWA3 Optical Remote Sensing (HISE) 1999