Abstract

The first reported use is described of optogalvanic detection to observe laser-induced, dipole–dipole pair absorption in discharges of barium and helium–barium. Fractional changes in steady-state discharge populations as small as one part in 10⁵ that are due to the laser-induced collision are observed. In both experiments the absorption maxima occur at the predicted (R = ∞) wavelength and have a full width at half-maximum of approximately 15 cm⁻¹.

© 1980 Optical Society of America

Observation of atomic-pair absorption with an incoherent source

J. C. Whit, G. A. Zdasiuk, J. F. Young, and S. E. Harris
Opt. Lett. 4(5) 137-139 (1979)

Observation of dipole–quadrupole radiative collisional fluorescence

J. C. White
Opt. Lett. 5(6) 239-241 (1980)

Pair-absorption-pumped barium laser

R. W. Falcone and G. A. Zdasiuk
Opt. Lett. 5(4) 155-157 (1980)

Noise considerations, signal magnitudes, and detection limits in a hollow cathode discharge by optogalvanic spectroscopy

Richard A. Keller and Edward F. Zalewski
Appl. Opt. 19(19) 3301-3305 (1980)

Optogalvanic double-resonance spectroscopy: experimental observations

Rolf Engleman and Richard A. Keiler
Opt. Lett. 5(11) 465-466 (1980)