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Continuous-wave ultraviolet laser action in strongly scattering Nd-doped alumina

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Abstract

We report electrically pumped, cw laser action near 405 nm from Nd3+-doped δ-alumina nanopowders. To our knowledge, this is the first report of stimulated emission from the high-lying F2-excited states, achieved through feedback from strong elastic scattering of light over transport path lengths shorter than half a wavelength.

© 2002 Optical Society of America

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