Journal
OPTICAL MATERIALS EXPRESS
Volume 7, Issue 7, Pages 2361-2367Publisher
OPTICAL SOC AMER
DOI: 10.1364/OME.7.002361
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We present continuous wave laser activity in neodymium-doped sapphire ridge waveguides. The ridges were prepared using diamond blade dicing of thin Nd3+: sapphire films grown on sapphire substrates by pulsed laser deposition. Lasing was realized at wavelengths of 1092 nm and 1097 nm for ridge waveguide orientations addressing the sigma- and pi-polarization, respectively. A maximum slope efficiency with respect to incident pump power of 12% was achieved in s- polarization with a ridge cross section of 40.8 x 2.6 mu m(2) and a ridge length of 8 mm. With an available incident pump power of 2.8 W from a Ti: sapphire laser, a maximum output power of 322 mW was realized. (C) 2017 Optical Society of America
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