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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 10 — Apr. 1, 2010
  • pp: 1757–1763

Highly efficient refractive Gaussian-to-tophat beam shaper for compact terahertz imager

Roman Kleindienst, Lothar Moeller, and Stefan Sinzinger  »View Author Affiliations


Applied Optics, Vol. 49, Issue 10, pp. 1757-1763 (2010)
http://dx.doi.org/10.1364/AO.49.001757


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Abstract

We describe an efficient and compact terahertz (THz) illumination system as part of an active THz imager. The design and fabrication methods are verified by comparing measurements with wave optical simulations that form a basis for the design of a Gaussian-to-tophat beam shaper. Introducing realistic alignment tolerances in the simulations led to an improved agreement with the experimental data. Furthermore, we propose a method to reduce the alignment effort for THz beam shaping elements by correlating measured results with simulated data of a misaligned system.

© 2010 Optical Society of America

OCIS Codes
(220.2945) Optical design and fabrication : Illumination design
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: January 6, 2010
Manuscript Accepted: February 14, 2010
Published: March 24, 2010

Citation
Roman Kleindienst, Lothar Moeller, and Stefan Sinzinger, "Highly efficient refractive Gaussian-to-tophat beam shaper for compact terahertz imager," Appl. Opt. 49, 1757-1763 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-10-1757

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