Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Masson et al. (2006) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: