scholarly journals Optical-optical double resonance, laser induced fluorescence, and revision of the signs of the spin-spin constants of the boron carbide (BC) free radical

2015 ◽  
Vol 143 (22) ◽  
pp. 224308 ◽  
Author(s):  
Fumie X. Sunahori ◽  
Ramya Nagarajan ◽  
Dennis J. Clouthier
Keyword(s):  
Free Radical ◽  
Boron Carbide ◽  
Double Resonance ◽  
Laser Induced Fluorescence ◽  
Optical Double Resonance ◽  
Resonance Laser

Optical double resonance with laser-induced fluorescence detection

1982 ◽  
Vol 307 (1500) ◽  
pp. 603-615 ◽  
Keyword(s):  
Free Radicals ◽  
Laser Beam ◽  
Hyperfine Structure ◽  
Fluorescence Detection ◽  
Molecular Species ◽  
Double Resonance ◽  
Laser Induced Fluorescence ◽  
Intense Laser ◽  
Laser Induced Fluorescence Detection ◽  
Optical Double Resonance

The saturation of level populations induced in a molecule by an intense laser beam may be probed by a second beam at the same or a different frequency. A number of schemes have been based on this principle for simplifying complex spectra or for achieving sub-Doppler resolution. Fluorescence detection provides the sensitivity for studies on free radicals and other transient molecular species. The two beams may be provided by two separate lasers, or by sideband modulation of a single laser. These techniques are reviewed. Emphasis is placed on recent studies of hyperfine structure, of Stark splittings, and of Zeeman splittings.

An OH Monitoring Method Using Infrared-Ultraviolet Double Resonance Laser-Induced Fluorescence

2000 ◽  
Vol 73 (12) ◽  
pp. 2695-2702 ◽  
Author(s):  
Kazuhide Tsuji ◽  
Kiyoshi Nakata ◽  
Hirotada Oishi ◽  
Kazuhiko Shibuya
Keyword(s):  
Double Resonance ◽  
Laser Induced Fluorescence ◽  
Monitoring Method ◽  
Resonance Laser

Optical–optical double resonance laser spectroscopy of BaO

1975 ◽  
Vol 63 (8) ◽  
pp. 3228-3237 ◽  
Author(s):  
Robert W. Field ◽  
Gene A. Capelle ◽  
Michael A. Revelli
Keyword(s):  
Laser Spectroscopy ◽  
Double Resonance ◽  
Optical Double Resonance ◽  
Resonance Laser

A measurement of the lambda-type doubling spectrum of the CH radical by microwave-optical double resonance: further characterization of the A2Δ state

1984 ◽  
Vol 62 (12) ◽  
pp. 1563-1578 ◽  
Author(s):  
Christopher R. Brazier ◽  
John M. Brown
Keyword(s):  
Precise Measurement ◽  
Double Resonance ◽  
Laser Induced Fluorescence ◽  
Effective Hamiltonian ◽  
Optical Double Resonance ◽  
Molecular Hamiltonian ◽  
Line Widths ◽  
Ch Radical ◽  
Π State

Several lines in the lambda-doubling spectrum of the CH radical in its ground 2Π state have been recorded by the technique of microwave-optical double resonance. Individual lines in the (0, 0) band of the A2Π–X2Π system at 431 nm were pumped with a dye laser and the absorption of microwave radiation was detected as an increase in the level of fluorescence. The microwave transition frequencies were measured to an accuracy of 0.1 MHz and the results were used to determine values for the lambda-doubling parameters in the molecular effective Hamiltonian. Several lines in the (0, 0) band of the A–X system were also recorded with sub-Doppler line widths using the saturation technique of intermodulated fluorescence. The proton hyperfine structure was easily resolved. The very small effects of lambda-doubling in the A2Δ state were also detected for the higher rotational levels by precise measurement of the laser induced fluorescence spectrum. The values obtained for the parameters that described these effects in the molecular Hamiltonian are discussed.

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