A high-power, narrow linewidth XeCl* oscillator

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Abstract
A narrow linewidth (Δλ=0.0004 Å) modular dye laser system has been constructed and used to investigate the gain characteristics of a XeCl* oscillator. When operated as a free-running oscillator lasing occurred simultaneously on the Bv=0→Xv=1 and Bv=0→Xv=2 transitions. The injection of 20 μJ of UV radiation from the dye chain was sufficient to confine the entire output to either one of these two transitions. A measured linewidth of 0.0004 Å was obtained at average power levels of up to 5 W.