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Ripple-Free High-Power Super-Luminescent Diode Arrays

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2 Author(s)
F. Causa ; Univ. of Bath, Bath ; L. Burrow

This paper presents the experimental and theoretical characterisation of arrays of tapered super-luminescent diodes to achieve very high, broad-band, ripple-free optical output. These arrays were fabricated from 980-nm high-power triple-quantum-well InGaAs-AlGaAs double heterostructures. Output powers of 2.7 W pulsed and of 280-mW quasi-CW were obtained from antireflection-coated arrays, with 10% maximum wall-plug efficiency per pulse at 0.75-W pulsed output power. Experimental and theoretical results for the optical-electrical characteristics and the near-and far-field radiation characteristics of the arrays are discussed and compared with those of corresponding individual super-luminescent diodes.

Published in:

IEEE Journal of Quantum Electronics  (Volume:43 ,  Issue: 11 )