Terahertz achromatic quarter-wave plate
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- 15 January 2006
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 31 (2), 265-267
- https://doi.org/10.1364/ol.31.000265
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 , and therefore can be applied to terahertz time domain spectroscopy and polarimetry.
Keywords
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