An infrared parametric oscillator using proustite and pumped at 1.065µm has been operated with peak output powers in the kilowatt range. No significant deterioration of output power was observed after several hours of running at 2pps. Tuning from 1.82 to 2.56µm was obtained, limited only by the reflectivity limits of the mirrors used. With careful design, DRO proustite oscillators covering the entire range 1.2-9.5µm now appear feasible
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