Abstract

We use semiconductor laser amplifiers and a photorefractive crystal to generate a high-power, diffraction-limited laser beam at 860  nm. Using a single flared amplifier, we obtain 1.09  W in a diffraction-limited beam from 2.2  W of pump power. Using an array of flared amplifiers, we also demonstrate efficient beam coupling, showing that this technique is easily extended to semiconductor amplifier arrays.

© 1997 Optical Society of America

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