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Fabrication of terahertz wire-grid polarizers |
Applied Optics, Vol. 51, Issue 35, pp. 8360-8365 (2012)
http://dx.doi.org/10.1364/AO.51.008360
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Abstract
Wire-grid polarizers for terahertz region were fabricated by manufacturing triangular grating using a ruling-based, ultraprecision diamond machining process and replicating the pattern into polymethylpentene (TPX) and cyklo-olefin copolymer (COC) sheets using hot embossing. On top of the imprinted structures, aluminum was evaporated in an oblique angle, forming an aluminum wire grid. The achieved extinction rate was over 150 for TPX polarizers and near 1000 for COC polarizers.
© 2012 Optical Society of America
OCIS Codes
(220.1920) Optical design and fabrication : Diamond machining
(220.4000) Optical design and fabrication : Microstructure fabrication
(260.5430) Physical optics : Polarization
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Optical Design and Fabrication
History
Original Manuscript: September 11, 2012
Revised Manuscript: November 6, 2012
Manuscript Accepted: November 8, 2012
Published: December 5, 2012
Citation
Anni Partanen, Juha Väyrynen, Sami Hassinen, Hemmo Tuovinen, Jarkko Mutanen, Tommi Itkonen, Pertti Silfsten, Pertti Pääkkönen, Markku Kuittinen, Kari Mönkkönen, and Tapani Venäläinen, "Fabrication of terahertz wire-grid polarizers," Appl. Opt. 51, 8360-8365 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-35-8360
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