We report on the laser performance of a Nd:phosphate glass (Nd:IOG-I) channel waveguide laser fabricated by electric field assisted Ag+ diffusion. Lasing was achieved in two different size channels, 29 x 9 µm2 and 50 x 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.

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