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
Stuart MacCormack, G. D. Bacher, Jack Feinberg, Steve O’Brien, Robert J. Lang, Marvin B. Klein, and Barry A. Wechsler, "Powerful, diffraction-limited semiconductor laser using photorefractive beam coupling," Opt. Lett. 22, 227-229 (1997)