Raman-shifted dye laser for water vapor DIAL measurements

Journal Article · Fri May 01 04:00:00 EDT 1987 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.26.001617· OSTI ID:6644515

Grossmann, B E; Singh, U N; Higdon, N S; Cotnoir, L J; Wilkerson, T D; Browell, E V

For improved DIAL measurements of water vapor in the upper troposphere or lower stratosphere, we have generated narrowband (--0.03-cm/sup -1/) laser radiation at 720- and 940-nm wavelengths by stimulated Raman scattering (SRS) using the narrow linewidth (--0.02-cm/sup -1/) output of a Nd:YAG-pumped dye laser. For a hydrogen pressure of 350 psi, the first Stokes conversion efficiencies to 940 nm were 20% and 35% when using a conventional and waveguide Raman cell, respectively. We measured the linewidth of the first Stokes line at high cell pressures and inferred collisional broadening coefficients that agree well with those previously measured in spontaneous Raman scattering.

• Research Organization: Old Dominion University Research Foundation, Norfolk, Virginia 23508
• OSTI ID: 6644515
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 26:9; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
DESIGN
DYE LASERS
EFFICIENCY
FLUIDS
GASES
LASERS
LINE NARROWING
LINE WIDTHS
LIQUID LASERS
MEASURING INSTRUMENTS
OPTICAL PUMPING
OPTICAL RADAR
PRESSURE DEPENDENCE
PUMPING
RADAR
RAMAN EFFECT
RANGE FINDERS
REMOTE SENSING
STOKES PARAMETERS
VAPORS
WATER VAPOR