Abstract

In a recent article [Opt. Lett. 34, 2507 (2009) ], the authors concluded that the imaginary part of the complex conductivity σ of an AlInN film was negative. However, this result was obtained using an approximation that is not applicable in this case. Using the correct equation, the data can be well described with a positive imaginary part of σ.

© 2010 Optical Society of America

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