Origin of pseudo-dispersion in non-dispersive media by terahertz time-domain spectroscopy

Farah Vandrevala; Erik Einarsson

doi:10.1364/OE.27.033537

Origin of pseudo-dispersion in non-dispersive media by terahertz time-domain spectroscopy

Farah Vandrevala
, Erik Einarsson

Department of Electrical Engineering

SUNY Buffalo

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

1 Scopus citations

Abstract

We report the false appearance of dispersion in non-dispersive materials when measured by terahertz time-domain spectroscopy. This occurs when the material is measured in reflection geometry and has a bulk metal interface opposite to the incident interface, for example, when a substrate is supported by a metal stage with the THz light incident on it from above. We explain this effect in terms of the frequency-dependent response of the material when it is represented by a shorted transmission line model.

Original language	English
Pages (from-to)	33537-33542
Number of pages	6
Journal	Optics Express
Volume	27
Issue number	23
DOIs	https://doi.org/10.1364/OE.27.033537
State	Published - Nov 11 2019

Access to Document

10.1364/OE.27.033537

Cite this

@article{988e3720887f4a5bbd31a8494e39f271,

title = "Origin of pseudo-dispersion in non-dispersive media by terahertz time-domain spectroscopy",

abstract = "We report the false appearance of dispersion in non-dispersive materials when measured by terahertz time-domain spectroscopy. This occurs when the material is measured in reflection geometry and has a bulk metal interface opposite to the incident interface, for example, when a substrate is supported by a metal stage with the THz light incident on it from above. We explain this effect in terms of the frequency-dependent response of the material when it is represented by a shorted transmission line model.",

author = "Farah Vandrevala and Erik Einarsson",

note = "Publisher Copyright: {\textcopyright} 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement",

year = "2019",

month = nov,

day = "11",

doi = "10.1364/OE.27.033537",

language = "English",

volume = "27",

pages = "33537--33542",

journal = "Optics Express",

issn = "1094-4087",

publisher = "Optica Publishing Group (formerly OSA)",

number = "23",

}

TY - JOUR

T1 - Origin of pseudo-dispersion in non-dispersive media by terahertz time-domain spectroscopy

AU - Vandrevala, Farah

AU - Einarsson, Erik

PY - 2019/11/11

Y1 - 2019/11/11

N2 - We report the false appearance of dispersion in non-dispersive materials when measured by terahertz time-domain spectroscopy. This occurs when the material is measured in reflection geometry and has a bulk metal interface opposite to the incident interface, for example, when a substrate is supported by a metal stage with the THz light incident on it from above. We explain this effect in terms of the frequency-dependent response of the material when it is represented by a shorted transmission line model.

AB - We report the false appearance of dispersion in non-dispersive materials when measured by terahertz time-domain spectroscopy. This occurs when the material is measured in reflection geometry and has a bulk metal interface opposite to the incident interface, for example, when a substrate is supported by a metal stage with the THz light incident on it from above. We explain this effect in terms of the frequency-dependent response of the material when it is represented by a shorted transmission line model.

UR - https://www.scopus.com/pages/publications/85075268306

U2 - 10.1364/OE.27.033537

DO - 10.1364/OE.27.033537

M3 - Article

C2 - 31878420

AN - SCOPUS:85075268306

SN - 1094-4087

VL - 27

SP - 33537

EP - 33542

JO - Optics Express

JF - Optics Express

IS - 23

ER -

Origin of pseudo-dispersion in non-dispersive media by terahertz time-domain spectroscopy

Abstract

Access to Document

Other files and links

Fingerprint

Cite this