A Picarin lens is an important part of Gaussian beam optics for terahertz radiation (THz radiation).

Unique properties of Picarin (a plastic) make this possible (source: External links):

• Picarin is highly transparent in THz and visible spectral ranges.
• Refractive index of Picarin is almost the same for THz (n=1.52) and visible light (n=1.52).
• It withstands optical polishing - very strong mechanically.

See also

• terahertz radiation
• THz frequency

External links

• http://www.mtinstruments.com/