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2.5 W orange power by frequency conversion from a dual-gain quantum-dot disk laser

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Abstract

We report a disk laser using two quantum-dot semiconductor gain elements, resulting in what we believe is the first demonstration of intracavity frequency conversion with these active media. Output power of 6W has been obtained in dual-gain configuration at a wavelength of 1180nm, while single-gain lasers produced up to 3 and 4W individually, limited by thermal rollover in the output characteristics. The gain enhancement achieved with two active elements comprising 39 layers of Stranski–Krastanov InGaAs quantum dots allows for intracavity frequency doubling delivering 2.5W of orange radiation.

© 2010 Optical Society of America

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