Optical Properties of (Al_xGa_<1-x>)_<0.5>In_<0.5>P Quaternary Alloys
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概要
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The dielectric function spectra ε(E) of (Al_xGa_<1-x>)_<0.5>In_<0.5>P quaternary alloys lattice-matched to GaAs have been measured at room temperature in the 1.2-5.5-eV photon-energy range using spectroscopic ellipsometry (SE). The measured SE spectra show distinct structures at energies of the E_0, E_1 and E_2 critical points. These spectra are analyzed on the basis of a simplified model of interband transitions. This model enables us to obtain the, optical response in (Al_xGa_<1-x>)_<0.5>In_<0.5>P alloys of arbitrary composition x and photon energy E=hω. Results are presented for the complex refractive index (n^*=n+ik), absorption coefficient (α) and normal-incidence reflectivity (R) of these alloys.
- 社団法人応用物理学会の論文
- 1994-01-15
著者
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Adachi Sadao
Department Of Electronic Engineering Gunma University
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Ohtsuka Kouji
Research And Development Division Sanken Electric Co. Ltd.
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Kato Hirokazu
Department Of Electronic Engineering. Faculty Of Engineering Gunma University
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NAKANISHI Hiroshi
Research and Development Division, Sanken Electric Co., Ltd.
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Nakanishi Hiroshi
Research And Development Division Sanken Electric Co. Ltd.
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