We have investigated the performance of Tm3+-doped fluorozirconate fiber lasers when pumped at approximately 790 nm with a Ti:sapphire laser. This was done to assess which transitions are suitable for diode-pumping in addition to the 3F4-3H4 transition (Fig. 1) near 2.3 μm, as previously reported by Allen and Esterowitz.1

© 1991 Optical Society of America

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