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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 23 — Aug. 10, 2007
  • pp: 5645–5648

Fabrication of highly rotational symmetric quasi-periodic structures by multiexposure of a three-beam interference technique

Ngoc Diep Lai, Jian Hung Lin, and Chia Chen Hsu  »View Author Affiliations


Applied Optics, Vol. 46, Issue 23, pp. 5645-5648 (2007)
http://dx.doi.org/10.1364/AO.46.005645


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Abstract

A simple and efficient interference method for fabricating highly symmetric two-dimensional (2-D) quasi-periodic structures (QPSs) is theoretically and experimentally demonstrated. With a three-beam interference technique, one can fabricate a periodic 2-D structure having sixfold symmetry. When this structure is multiduplicated into other specific orientations its combination results in a QPS with multifold symmetry. By use of n exposures with a rotation angle of 60 ° / n , one can create a 2-D QPS with six n-fold symmetry. The QPS with a super high symmetry level, as high as 60-fold, is demonstrated for the first time to the best of our knowledge. The diffraction pattern of a QPS is consistent with the Fourier transform calculation. The fabricated structures should be useful for many applications, such as isotropic bandgap materials and extraction enhancement of light-emitting diodes.

© 2007 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(110.5220) Imaging systems : Photolithography
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4000) Optical design and fabrication : Microstructure fabrication
(260.3160) Physical optics : Interference

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: March 8, 2007
Revised Manuscript: May 2, 2007
Manuscript Accepted: May 30, 2007
Published: August 8, 2007

Citation
Ngoc Diep Lai, Jian Hung Lin, and Chia Chen Hsu, "Fabrication of highly rotational symmetric quasi-periodic structures by multiexposure of a three-beam interference technique," Appl. Opt. 46, 5645-5648 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-23-5645

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