High-Gain Laser Transition in Lead Vapor

Gain measurements in the He−I+ laser

“…Due to the increase of the buffer gas pressure both the eleetron kinetic energy and the tate of the charge-transfer excitation decrease. Itis in aecordance with the resu]t of MORI et al [12], i.e. the electron temperature deereases with the increase of he]ium pressure in positive eolumn Hemetal vapour laser discharge.…”

“…They measured the gain of the He--Ne plasma using several tubes of different length. SILrVAST and DEECH [11] and FOWI, ES and SIrFVAST [12] measured the gain coeffieient of the He-metal vapour pulsed laser in small discharge tubes by means of amplified stimulated emission (ASE) measurement. In our case one long discharge tube was used.…”

Numerical and experimental investigation on self-terminating and recombination lasers in univalent ions of calcium and strontium

“…1 Subsequently, Walter et al made a further analysis on the mechanisms of this class laser and summarized five criteria for efficient operation when he first reported copper and calcium ion vapor lasers in 1966. 2 In the same paper, he also predicted the strontium ion self-terminating laser at 1.03/1.09 m wavelengths due to transitions from the resonance levels 5 p 2 P 3/2,1/2 0 to the metastable states 4d 2 D 5/2,3/2 .…”

Empirical regularities for excitation cross-sections of lead atom (radiative transitions from even levels)

“…Gas-discharge lasers employing lead atom and ion transitions have been developed. Laser generation using PbI transition at wavelength λ = 722.9 nm was pioneered in [7]. However estimates in [10] show that generation using other transitions originating at the same level, 6p7s(1/2,1/2)º1 (or 6p7s 3 Pº1, using the LS notation), should be just as efficient.…”