Optical EngineeringSolid state multiple-beam laser with tunable wavelength difference between beams
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A diode laser pumped solid state laser design capable of generating several simultaneously emitted spatially separate and wavelength tunable beams is presented. The laser design was demonstrated in a dual-beam configuration using Tm,Ho:YLF as laser material. Laser oscillation in two TEM00, longitudinal multimode cw beams of 80-mW maximum output power was demonstrated. The wavelength difference between the beams was tuned over a 15-nm-wide range using one solid etalon as a tuning element.