Determination of the complex refractivity of Au, Cu and Al in terahertz and far-infrared regions from reflection spectra measurements

Yuan Mou; Zhen sen Wu; Yan qing Gao; Zhi qiang Yang; Qiu jie Yang; Geng Zhang

doi:10.1016/j.infrared.2016.10.017

Determination of the complex refractivity of Au, Cu and Al in terahertz and far-infrared regions from reflection spectra measurements

Yuan Mou^*, Zhen sen Wu, Yan qing Gao, Zhi qiang Yang, Qiu jie Yang, Geng Zhang

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

A scheme to determine the complex refractivity of gold (Au), Copper (Cu) and Aluminum (Al) from measurements of ellipsometer and spectrometer are proposed in this paper. The reflection spectra of the metals from 4 THz to 40 THz are measured with spectrometer. The determined refractivity by Kramers-Kronig (KK) algorithm coincides with the measured results from ellipsometer in far infrared region. Drude model is invited to make the wing correction on the terahertz reflection spectra, which helps to eliminate the effects of the noises from spectrometer on KK algorithm. The calculated refractive indexes from measured spectra in terahertz region are in consistent with those from corrected reflection spectra. The advantage of the scheme is to obtain terahertz dispersion properties based on limited information in infrared region.

Original language	English
Pages (from-to)	58-64
Number of pages	7
Journal	Infrared Physics and Technology
Volume	80
DOIs	https://doi.org/10.1016/j.infrared.2016.10.017
Publication status	Published - 1 Jan 2017
Externally published	Yes

Keywords

Complex refractivity
Kramers-Kronig
Reflection spectra
Terahertz

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10.1016/j.infrared.2016.10.017

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title = "Determination of the complex refractivity of Au, Cu and Al in terahertz and far-infrared regions from reflection spectra measurements",

abstract = "A scheme to determine the complex refractivity of gold (Au), Copper (Cu) and Aluminum (Al) from measurements of ellipsometer and spectrometer are proposed in this paper. The reflection spectra of the metals from 4 THz to 40 THz are measured with spectrometer. The determined refractivity by Kramers-Kronig (KK) algorithm coincides with the measured results from ellipsometer in far infrared region. Drude model is invited to make the wing correction on the terahertz reflection spectra, which helps to eliminate the effects of the noises from spectrometer on KK algorithm. The calculated refractive indexes from measured spectra in terahertz region are in consistent with those from corrected reflection spectra. The advantage of the scheme is to obtain terahertz dispersion properties based on limited information in infrared region.",

keywords = "Complex refractivity, Kramers-Kronig, Reflection spectra, Terahertz",

author = "Yuan Mou and Wu, {Zhen sen} and Gao, {Yan qing} and Yang, {Zhi qiang} and Yang, {Qiu jie} and Geng Zhang",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = jan,

day = "1",

doi = "10.1016/j.infrared.2016.10.017",

language = "English",

volume = "80",

pages = "58--64",

journal = "Infrared Physics and Technology",

issn = "1350-4495",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Determination of the complex refractivity of Au, Cu and Al in terahertz and far-infrared regions from reflection spectra measurements

AU - Mou, Yuan

AU - Wu, Zhen sen

AU - Gao, Yan qing

AU - Yang, Zhi qiang

AU - Yang, Qiu jie

AU - Zhang, Geng

PY - 2017/1/1

Y1 - 2017/1/1

N2 - A scheme to determine the complex refractivity of gold (Au), Copper (Cu) and Aluminum (Al) from measurements of ellipsometer and spectrometer are proposed in this paper. The reflection spectra of the metals from 4 THz to 40 THz are measured with spectrometer. The determined refractivity by Kramers-Kronig (KK) algorithm coincides with the measured results from ellipsometer in far infrared region. Drude model is invited to make the wing correction on the terahertz reflection spectra, which helps to eliminate the effects of the noises from spectrometer on KK algorithm. The calculated refractive indexes from measured spectra in terahertz region are in consistent with those from corrected reflection spectra. The advantage of the scheme is to obtain terahertz dispersion properties based on limited information in infrared region.

AB - A scheme to determine the complex refractivity of gold (Au), Copper (Cu) and Aluminum (Al) from measurements of ellipsometer and spectrometer are proposed in this paper. The reflection spectra of the metals from 4 THz to 40 THz are measured with spectrometer. The determined refractivity by Kramers-Kronig (KK) algorithm coincides with the measured results from ellipsometer in far infrared region. Drude model is invited to make the wing correction on the terahertz reflection spectra, which helps to eliminate the effects of the noises from spectrometer on KK algorithm. The calculated refractive indexes from measured spectra in terahertz region are in consistent with those from corrected reflection spectra. The advantage of the scheme is to obtain terahertz dispersion properties based on limited information in infrared region.

KW - Complex refractivity

KW - Kramers-Kronig

KW - Reflection spectra

KW - Terahertz

UR - http://www.scopus.com/inward/record.url?scp=84999025963&partnerID=8YFLogxK

U2 - 10.1016/j.infrared.2016.10.017

DO - 10.1016/j.infrared.2016.10.017

M3 - Article

AN - SCOPUS:84999025963

SN - 1350-4495

VL - 80

SP - 58

EP - 64

JO - Infrared Physics and Technology

JF - Infrared Physics and Technology

ER -

Determination of the complex refractivity of Au, Cu and Al in terahertz and far-infrared regions from reflection spectra measurements

Abstract

Keywords

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