Title :
Excitation mechanisms and characterization of a multi-ionic xenon laser
Author :
Sobral, H. ; Raineri, M. ; Schinca, D. ; Gallardo, M. ; Duchowicz, R.
fDate :
9/1/1999 12:00:00 AM
Abstract :
The emission characteristics of an ultraviolet-visible pulsed multi-ionic xenon laser were studied through time-resolved spectroscopy and the results were interpreted using a collisional-radiative theoretical model. This analysis includes more than 20 laser lines belonging to several ionic species (Xe III-VIII). Depending on the experimental conditions, different temporal distributions of the laser lines and their corresponding spontaneous emissions can be observed. In particular, laser emission presents temporal oscillations near threshold. Pumping processes for the laser transitions have been analyzed by using this model. Relativistic Hartree-Fock calculations of laser level lifetimes and radiative transition probabilities were performed. Experimental laser gain for several transitions were obtained and compared with the theoretical values derived from the calculations
Keywords :
ion lasers; isoelectronic series; laser transitions; laser variables measurement; optical pumping; probability; time resolved spectra; xenon; Xe; collisional-radiative theoretical model; emission characteristics; excitation mechanisms; ionic species; laser gain; laser level lifetimes; laser lines; laser transitions; multi-ionic xenon laser; near threshold; radiative transition probabilities; relativistic Hartree-Fock calculations; temporal distributions; temporal oscillations; time-resolved spectroscopy; ultraviolet-visible pulsed multi-ionic xenon laser; Laser excitation; Laser modes; Laser theory; Laser transitions; Optical pulses; Probability; Pump lasers; Spectroscopy; Spontaneous emission; Xenon;
Journal_Title :
Quantum Electronics, IEEE Journal of
