Abstract

Ridge waveguide laser diodes emitting at 1020 nm, which is a pumping wavelength for praseodymium doped fiber amplifiers, have been developed. In order to achieve high output power and highly reliable operation, a window structure is introduced by utilizing Si+ ion implantation and annealing. As a result, high output power more than 520 mW without catastrophic optical damage and lifetime longer than 15000 hours under the condition of 50 Celsius, 150 mW have been realized.

© 1999 Optical Society of America

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