Abstract
Pulsed lasing from optically pumped rare gas metastable atoms (Ne, Ar, Kr, and Xe) has been demonstrated previously. The laser relies on a three-level scheme, which involves the and states from the electronic configuration and the metastable level of the configuration (Racah notation). Population inversions were achieved using relaxation from ( to induced by collisions with helium or argon at pressures near 1 atm. Pulsed lasing was easily achieved using the high instantaneous pump intensities provided by a pulsed optical parametric oscillator excitation laser. In the present study we examine the potential for the development of a continuous wave (CW) optically pumped Ar laser. We report lasing of the (912.547 nm) transition following CW diode laser excitation of the line (811.754 nm). A pulsed discharge was used to generate Ar , and the time-resolved lasing kinetics provide insights concerning the radiative and collisional relaxation processes.
© 2013 Optical Society of America
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