Gouy shift correction for highly accurate refractive index retrieval in time-domain terahertz spectroscopy

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SYSNO ASEP	0352371
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Gouy shift correction for highly accurate refractive index retrieval in time-domain terahertz spectroscopy
Author(s)	Kužel, Petr (FZU-D)_{RID, ORCID, SAI} Němec, Hynek (FZU-D)_{RID, ORCID, SAI} Kadlec, Filip (FZU-D)_{RID, ORCID, SAI} Kadlec, Christelle (FZU-D)_{RID, ORCID}
Source Title	Optics Express. - : Optical Society of America - ISSN 1094-4087 Roč. 18, č. 15 (2010), s. 15338-15348
Number of pages	11 s.
Language	eng - English
Country	US - United States
Keywords	terahertz spectroscopy ; Gouy phase shift ; gaussian beams ; refractive index
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GC202/09/J045 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000280693300007
DOI	10.1364/OE.18.015338
Annotation	Terahertz spectroscopic measurements are usually performed in focused beam geometry while the standard routine for the retrieval of the sample refractive index assumes plane-wave approximation. In this paper we propose a model for the transmission function which accounts for spatially limited Gaussian terahertz beams. We demonstrate experimentally its validity and applicability for an accurate extraction of the refractive index from experimental data.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2011

Number of the records: 1