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Spatial mode matching efficiencies for heterodyned GaAlAs semiconductor lasers

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2 Author(s)
K. A. Winick ; Lincoln Lab., MIT, Lexington, MA, USA ; P. Kumar

High spatial mode matching efficiencies are experimentally demonstrated when open-loop frequency-stabilized GaAlAs semiconductor lasers are heterodyned on silicon p-i-n detectors. Repeatable values of 75% are obtained using two independent lasers. The mode-matching efficiency increases to 90% when a single modulated laser is self-heterodyned using an unequal-path-length Mach-Zehnder interferometer. Experimental data are shown to match closely with theoretical predictions

Published in:

Journal of Lightwave Technology  (Volume:6 ,  Issue: 4 )