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.

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References

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  1. T. T. Kang, M. Yamamoto, M. Tanaka, A. Hashimoto, A. Yamamoto, R. Sudo, A. Noda, D. W. Liu, and K. Yamamoto, Opt. Lett. 34, 2507 (2009).
    [CrossRef] [PubMed]

2009 (1)

Hashimoto, A.

Kang, T. T.

Liu, D. W.

Noda, A.

Sudo, R.

Tanaka, M.

Yamamoto, A.

Yamamoto, K.

Yamamoto, M.

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Figures (1)

Fig. 1
Fig. 1

(a) Absolute value of the ratio E film E ref . (b) Imaginary conductivity Im [ σ ] . Solid line, approximation according to Eq. (1) in [1] with the fitted parameters from [1]. Dashed line, nonapproximated solution according to [1] using the same parameters. Dotted line, nonapproximated solution with C = 0 .

Equations (1)

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E film ( ω ) E ref ( ω ) = t 12 t 23 exp [ i ( n 2 + i k 2 ) ω d c ] 1 r 21 r 23 exp [ i 2 ( n 2 + i k 2 ) ω d c ] t 13 exp [ i n 1 ω d c ] ,

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