Determining the optical constants of vacuum evaporated ii–vi compound thin films with optical waveguides

K. Sasaki; Y. Kudo; H. Watanabe; O. Hamano

doi:10.1364/AO.20.003715

Applied Optics
Vol. 20,
Issue 21,
pp. 3715-3718
(1981)
•https://doi.org/10.1364/AO.20.003715

Determining the optical constants of vacuum evaporated ii–vi compound thin films with optical waveguides

K. Sasaki, Y. Kudo, H. Watanabe, and O. Hamano

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K. Sasaki, Y. Kudo, H. Watanabe, and O. Hamano, "Determining the optical constants of vacuum evaporated ii–vi compound thin films with optical waveguides," Appl. Opt. 20, 3715-3718 (1981)

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Abstract

The optical constants of high-index ii–vi compound thin films on low-index glass waveguides are determined from the concept of resonant thickness using the complex dispersion relation together with experimental properties of guided waves. The results are compared with the refractive indices of bulk crystals of ii–vi compounds (CdS, ZnSe, ZnS, and ZnTe).

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II–VI Compound	Optical Constants	Wavelength (Å)
II–VI Compound	Optical Constants	4880	5145	6328
CdS	$n_{2}^{'}$	2.2 $\dot{7}$	2.1 $\dot{6}$	2.4 $\dot{0}$
CdS	α (m⁻¹)	5.3 × 10³	4.8 × 10³	7.4 × 10²
ZnSe	$n_{2}^{'}$	2.4 $\dot{2}$	2.5 $\dot{3}$	2.1 $\dot{3}$
ZnSe	α (m⁻¹)	3.7 × 10³	2.5 × 10³	4.2 × 10³
ZnS	$n_{2}^{'}$	2.5 $\dot{6}$	2.5 $\dot{1}$	2.3 $\dot{4}$
ZnS	α (m⁻¹)	3.5 × 10³	3.4 × 10³	3.9 × 10³
ZnTe	$n_{2}^{'}$	2.8 $\dot{7}$	2.8 $\dot{5}$	2.7 $\dot{6}$
ZnTe	α (m⁻¹)	2.4 × 10³	3.9 × 10³	2.4 × 10³

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Applied Optics