Abstract
The 2.7 μm erbium laser in ZBLAN fibers is investigated in computer simulations and experiments. Strong excited-state absorption leads to the deposition of excitation in the 4S3/2 level. Simultaneous co-lasing at 850 nm from this level is responsible for the saturation of the output power in the region of 10 mW. The overcome of saturation by cascade lasing at 1.7 μm and 2.7 μm is predicted.
© 1995 Optical Society of America
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