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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 1 — Jan. 1, 2009
  • pp: 127–133

Optical properties and microstructure of Ta 2 O 5 biaxial film

Hongji Qi, Xiudi Xiao, Hongbo He, Kui Yi, and Zhengxiu Fan  »View Author Affiliations


Applied Optics, Vol. 48, Issue 1, pp. 127-133 (2009)
http://dx.doi.org/10.1364/AO.48.000127


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Abstract

This study investigates the optical properties and microstructure of Ta 2 O 5 film deposited with the glancing angle deposition technique. The tilted nanocolumn microstructure, examined with scanning electron microscopy, induces the optical anisotropy of thin film. The optical properties of thin film are characterized with an inverse synthesis method. Based on the Cauchy model, the dispersion equations of optical constants of film are determined from the transmittance spectra measured at normal and oblique incidence over 400 800 nm . The starting values derived with an envelope method quicken the optimization process greatly. The dispersion of the principal indices N 1 , N 2 , and N 3 and the thickness d of thin film are presented statistically. A good agreement between the measured optical properties and theoretical calculation is obtained, which validates the model established for thin film produced by glancing angle deposition.

© 2008 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(230.4000) Optical devices : Microstructure fabrication
(260.1440) Physical optics : Birefringence
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Optical Devices

History
Original Manuscript: September 17, 2008
Revised Manuscript: November 25, 2008
Manuscript Accepted: November 27, 2008
Published: December 22, 2008

Citation
Hongji Qi, Xiudi Xiao, Hongbo He, Kui Yi, and Zhengxiu Fan, "Optical properties and microstructure of Ta2O5 biaxial film," Appl. Opt. 48, 127-133 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-1-127

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