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We report on the laser performance of a Nd:phosphate glass (Nd:IOG-1) channel waveguide laser fabricated by electric field assisted Ag+ diffusion. Lasing was achieved in two different size channels, 29×9 µm2 and 50×9 µm2, on a sample of length 8 mm. Slope efficiencies of ~15% with respect to incident pump power were measured. Losses in the 29 um wide channel were measured to be in the range 0.2−1.1 dB/cm and in the 50 µm channel, 0.2−0.4 dB/cm. The laser spectrum, centered about the emission peak of 1053 nm, was multimode and randomly polarized.
© 1999 Optical Society of America
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