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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 17 — Aug. 21, 2006
  • pp: 8001–8012

Blue-shifting of circular Bragg phenomenon by annealing of chiral sculptured thin films

Sean M. Pursel, Mark W. Horn, and Akhlesh Lakhtakia  »View Author Affiliations


Optics Express, Vol. 14, Issue 17, pp. 8001-8012 (2006)
http://dx.doi.org/10.1364/OE.14.008001


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Abstract

The wavelength regime of the circular Bragg phenomenon, exhibited by chiral sculptured thin films fabricated using the serial bideposition technique, blue shifts as a result of post-deposition annealing. This blue shift can be attributed to the net effect of three material changes that occur during annealing: a small reduction in helical pitch, an increase in the relative permittivity of the column material changing from amorphous to crystalline, and a density reduction due to columnar thinning from the same amorphous-to-crystalline transition.

© 2006 Optical Society of America

OCIS Codes
(230.1480) Optical devices : Bragg reflectors
(260.1440) Physical optics : Birefringence
(310.1860) Thin films : Deposition and fabrication
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Thin Films

History
Original Manuscript: August 2, 2006
Revised Manuscript: August 8, 2006
Manuscript Accepted: August 8, 2006
Published: August 21, 2006

Citation
Sean M. Pursel, Mark W. Horn, and Akhlesh Lakhtakia, "Blue-shifting of circular Bragg phenomenon by annealing of chiral sculptured thin films," Opt. Express 14, 8001-8012 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-17-8001


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References

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