Abstract

We report the observation of atomic-pair absorption in barium and in barium–thallium vapors using a white-light source. At atomic densities on the order of 10¹⁷ atoms/cm³ we measure absorptions of 2.9% cm⁻¹ for Ba–Ba and 2.3% cm⁻¹ for Ba–Tl. In both cases, the absorption maxima occur at the predicted (R = ∞) wavelength and have a full width at half maximum of approximately 15 cm⁻¹.

© 1979 Optical Society of America

Observation of dipole–dipole pair absorption using optogalvanic detection

J. C. White, R. R. Freeman, and P. F. Liao
Opt. Lett. 5(3) 120-122 (1980)

Pair-absorption-pumped barium laser

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

Observation of a laser-induced dipole–quadrupole collision

W. R. Green, M. D. Wright, J. Lukasik, J. F. Young, and S. E. Harris
Opt. Lett. 4(9) 265-267 (1979)

Radiative collisional fluorescence observed from thermally excited atoms

R. W. Falcone and G. A. Zdasiuk
Opt. Lett. 5(9) 365-367 (1980)

Observation of dipole–quadrupole radiative collisional fluorescence

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