Abstract

Laser oscillation has been obtained from a discharge-pumped gold vapor at 627.8 nm of a neutral gold atom in a low-temperature range of about 70 –150 °C by using chloroauric acid as a lasant. A laser is operated by successive pulsed discharges of a storage capacitor through a spark-gap switch. Excitation is done in an aperiodic pulse train with a compact device by a boosted-ac (50 Hz) high voltage of up to 5.4 kV rms. A maximum laser peak power of about 1.3 W and a laser-pulse energy of 27 nJ are obtained.

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