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. 2006 Jan 15;31(2):265-7.
doi: 10.1364/ol.31.000265.

Terahertz achromatic quarter-wave plate

Jean-Baptiste Masson  1 , Guilhem Gallot
Affiliations
Free article

Terahertz achromatic quarter-wave plate

Jean-Baptiste Masson et al. Opt Lett. .
Free article

Abstract

Phase retarders usually present a strong frequency dependence. We discuss the design and characterization of a terahertz achromatic quarter-wave plate. This wave plate is made from six birefringent quartz plates precisely designed and stacked together. Phase retardation has been measured over the whole terahertz range by terahertz polarimetry. This achromatic wave plate demonstrates a huge frequency bandwidth (upsilonmax/upsilonmin approximately 7), and therefore can be applied to terahertz time domain spectroscopy and polarimetry.

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