Title :
Triplet-state bound-free transitions of alkali dimers (Na2 , K2, and Rb2) by electron-beam excitation
Author :
Xing, Da ; Wang, Qi ; Tan, Shici ; Ueda, Ken-ichi
Author_Institution :
Inst. of Laser Life Sci., South China Normal Univ., Guangzhou, China
fDate :
9/1/1998 12:00:00 AM
Abstract :
Amplified spontaneous emissions (ASEs) of the Na2 violet, K2 yellow, and Rb2 orange diffuse bands, which are potentially important in the development of continuously tunable high-power laser sources, were observed from electron-beam-excited mixtures of Na-Na2, K-K2, or Rb-Rb2 vapor with argon buffer gas. The continuum spectra centered at 436, 574, and 604 nm were attributed to triplet-triplet Na 2, K2, and Rb2 bound-free transitions, respectively. The dissociative recombination reaction of Na3 +, K3+ or Rb3+ is discussed as an efficient formation process of the upper states in the present electron beam pumping experiments
Keywords :
electron beam pumping; excimer lasers; excited states; laser transitions; laser tuning; photodissociation; superradiance; K-K2; K2; Na-Na2; Na2; Rb-Rb2 vapor; Rb2; alkali dimers; amplified spontaneous emissions; argon buffer gas; bound-free transitions; continuously tunable high-power laser sources; continuum spectra; dissociative recombination reaction; electron beam pumped lasers; electron beam pumping experiments; electron-beam excitation; electron-beam-excited mixtures; orange diffuse bands; triplet-state bound-free laser transitions; triplet-triplet transitions; tunable gas laser sources; upper states; violet; yellow; Argon; Electron beams; Gas lasers; Laser excitation; Laser theory; Laser tuning; Ovens; Pump lasers; Spontaneous emission; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
