Two-photon digital imaging of CO in combustion flows using planar laser-induced fluorescence

Journal Article · Mon Dec 01 00:00:00 EST 1986 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.11.000776· OSTI ID:7073208

Haumann, J; Seitzman, J M; Hanson, R K

Two-dimensional imaging of CO distributions in combustion gases is demonstrated using planar laser-induced fluorescence. The illumination technique is based on the combination of a nonlinear absorption scheme, in which two photons at 230.1 nm excite several rotational transitions of the B/sup 1/..sigma../sup +/reverse arrowX/sup 1/..sigma../sup +/ system, and the use of an ultraviolet multipass cell for producing the laser sheet. The subsequent visible fluorescence (B/sup 1/..sigma../sup +/..-->..A/sup 1/..pi..) is imaged onto an intensified two-dimensional photodiode array. Experimental results are presented for carbon monoxide-air and methane-air flames.

• Research Organization: High Temperature Gasdynamics Laboratory, Department of Mechanical Engineering, Stanford University, Stanford, California 94305
• OSTI ID: 7073208
• Journal Information: Opt. Lett.; (United States), Vol. 11:12
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AIR
COMBUSTION PROPERTIES
FLUORESCENCE SPECTROSCOPY
LASER SPECTROSCOPY
CARBON MONOXIDE
FLUORESCENCE
METHANE
COMBUSTION
COMBUSTION KINETICS
ENERGY-LEVEL TRANSITIONS
FLAMES
GAS FLOW
IMAGES
NONLINEAR OPTICS
ROTATIONAL STATES
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
FLUID FLOW
FLUIDS
GASES
HYDROCARBONS
KINETICS
LUMINESCENCE
OPTICS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
400102 - Chemical & Spectral Procedures