Abstract

Recent developments in tunable laser diodes now make it possible to do injection seeding of a quantum-limited Raman amplifier. We present data from an experiment in which a tunable laser diode in the visible was injected into a Raman amplifier with a coupling efficiency of 65% ± 45%. This efficiency approaches the theoretical limit of 100% and is much larger than the 0.1–0.2% coupling efficiency reported in the literature for a comparable experiment when an infrared laser diode is used.

© 1994 Optical Society of America

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