Abstract
Four-wave and six-wave optical processes using the potassium ns2S1/2 states (7 ≤ n ≤ 20) are investigated with input beam provided by a pulsed dye laser pumped by a frequency-doubled Nd:YAG laser. The beam is focused into a heat-pipe oven containing potassium vapor (nk ≈ 1016 cm−3). More than 120 coherent UV or near-UV lines between 288 and 422 nm are generated through the processes ωUV ± ωIR = 2ωl and ωUV + ωIR′ + ωIR" ± ωIR'" = 2ωL.
© 1984 Optical Society of America
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