Abstract
Mercury bromide laser emission at 502 nm is efficiently excited in pulsed discharges through the dissociation of HgBr2 to give the B state of HgBr either by direct electron impact1 or indirect collisional dissociation by N2 or xenon metastables.2 Laser action requires dissociation of a significant fraction of the HgBr2 present in the gas fill, and for repetitive sealed-off operation an efficient recombination process must occur to regenerate the working medium. Experimentally, very long gas lifetimes have been obtained with care over the choice of electrode and laser housing materials.3 A recombination pathway has been proposed,4 based on the reaction
© 1984 Optical Society of America
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