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Broadband antireflective surface-relief structure for THZ optics

: Brückner, C.; Pradarutti, B.; Stenzel, O.; Steinkopf, R.; Riehemann, S.; Notni, G.; Tünnermann, A.

Postprint (297 KByte; PDF; )

Optics Express 15 (2007), No.3, pp.779-789
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()

The requirements for a broadband antireflective structure in the THz spectral region are derived. Optimized structural parameters for a surface-relief grating adapted to the spectrum of an intended THz pulse are deduced. The effect of a structure fabricated into Topas® by a single-point diamond-turning process is demonstrated.