Journal
OPTICS EXPRESS
Volume 18, Issue 15, Pages 15338-15348Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.015338
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Funding
- Czech Science Foundation [202/09/J045]
- Academy of Sciences of the Czech Republic [AVOZ10100520]
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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. (C) 2010 Optical Society of America
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