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Diode-bar end-pumped high-power Nd:Y3Al5O12 planar waveguide laser

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Abstract

A compact high-power planar waveguide laser end pumped by a diode-bar is reported. The waveguide was fabricated by liquid-phase epitaxy and had an 80µm-thick, 1.5-at. % Nd:Y3Al5O12 core on a Y3Al5O12 substrate. A maximum output power of 6.2 W was obtained at 1.064 µm when the device was pumped with a 20-W diode bar operating near 807 nm, giving an overall optical-to-optical conversion efficiency of 31%. The total device length was 5 cm.

© 1998 Optical Society of America

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