Composition and temperature dependence of the refractive index in Hg 1-xCdxTe

Kun Liu; J. H. Chu; D. Y. Tang

doi:10.1063/1.356001

Composition and temperature dependence of the refractive index in Hg _1-xCd_xTe

Kun Liu, J. H. Chu, D. Y. Tang

CAS - Shanghai Institute of Technical Physics

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

The intrinsic absorption spectra for very thin Hg_1-xCd _xTe bulk samples with compositions x ranging from 0.276 to 0.443 have been obtained at different temperatures. Based on the measured absorption curves and Kramers-Kronig relation, the refractive index dispersion has been calculated in the wavelength region near and below the band gap at temperatures from 4.2 to 300 K. For Hg_1-xCd_xTe samples with x from 0.276 to 0.443, the dispersion relation can be described by an empirical formula: n(λ,T)²=A+B/[1-(C/λ)²] +Dλ², where the parameters A, B, C, and D are both temperature and composition dependent. In addition, a peak in the deduced dispersion spectra appears just at the wavelength corresponding to the band-gap energy E_g(x,T) of Hg_1-xCd_xTe.

Original language	English
Pages (from-to)	4176-4179
Number of pages	4
Journal	Journal of Applied Physics
Volume	75
Issue number	8
DOIs	https://doi.org/10.1063/1.356001
State	Published - 1994
Externally published	Yes

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title = "Composition and temperature dependence of the refractive index in Hg 1-xCdxTe",

abstract = "The intrinsic absorption spectra for very thin Hg1-xCd xTe bulk samples with compositions x ranging from 0.276 to 0.443 have been obtained at different temperatures. Based on the measured absorption curves and Kramers-Kronig relation, the refractive index dispersion has been calculated in the wavelength region near and below the band gap at temperatures from 4.2 to 300 K. For Hg1-xCdxTe samples with x from 0.276 to 0.443, the dispersion relation can be described by an empirical formula: n(λ,T)2=A+B/[1-(C/λ)2] +Dλ2, where the parameters A, B, C, and D are both temperature and composition dependent. In addition, a peak in the deduced dispersion spectra appears just at the wavelength corresponding to the band-gap energy Eg(x,T) of Hg1-xCdxTe.",

author = "Kun Liu and Chu, \{J. H.\} and Tang, \{D. Y.\}",

year = "1994",

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journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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T1 - Composition and temperature dependence of the refractive index in Hg 1-xCdxTe

AU - Liu, Kun

AU - Chu, J. H.

AU - Tang, D. Y.

PY - 1994

Y1 - 1994

N2 - The intrinsic absorption spectra for very thin Hg1-xCd xTe bulk samples with compositions x ranging from 0.276 to 0.443 have been obtained at different temperatures. Based on the measured absorption curves and Kramers-Kronig relation, the refractive index dispersion has been calculated in the wavelength region near and below the band gap at temperatures from 4.2 to 300 K. For Hg1-xCdxTe samples with x from 0.276 to 0.443, the dispersion relation can be described by an empirical formula: n(λ,T)2=A+B/[1-(C/λ)2] +Dλ2, where the parameters A, B, C, and D are both temperature and composition dependent. In addition, a peak in the deduced dispersion spectra appears just at the wavelength corresponding to the band-gap energy Eg(x,T) of Hg1-xCdxTe.

AB - The intrinsic absorption spectra for very thin Hg1-xCd xTe bulk samples with compositions x ranging from 0.276 to 0.443 have been obtained at different temperatures. Based on the measured absorption curves and Kramers-Kronig relation, the refractive index dispersion has been calculated in the wavelength region near and below the band gap at temperatures from 4.2 to 300 K. For Hg1-xCdxTe samples with x from 0.276 to 0.443, the dispersion relation can be described by an empirical formula: n(λ,T)2=A+B/[1-(C/λ)2] +Dλ2, where the parameters A, B, C, and D are both temperature and composition dependent. In addition, a peak in the deduced dispersion spectra appears just at the wavelength corresponding to the band-gap energy Eg(x,T) of Hg1-xCdxTe.

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DO - 10.1063/1.356001

M3 - 文章

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SN - 0021-8979

VL - 75

SP - 4176

EP - 4179

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 8

ER -

Composition and temperature dependence of the refractive index in Hg _1-xCd_xTe

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