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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 25 — Sep. 1, 1999
  • pp: 5282–5289

Confined blue iridescence by a diffracting microstructure: an optical investigation of the Cynandra opis butterfly

Daniel J. Brink and Mike E. Lee  »View Author Affiliations


Applied Optics, Vol. 38, Issue 25, pp. 5282-5289 (1999)
http://dx.doi.org/10.1364/AO.38.005282


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Abstract

When illuminated and viewed along certain well-defined directions, segments on the wings of the butterfly Cynandra opis shows a striking violet-blue to blue-green. We quantify the spectral and the directional properties of these areas of the wings of the insect. Electron microscopy shows that wing scales from these iridescent regions of the wings contain two gratinglike microstructures crossed at right angles. Application of the diffraction theory, as formulated by the Stratton–Silver–Chu integral, to the microstructure can explain all the important features observed experimentally.

© 1999 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(170.1420) Medical optics and biotechnology : Biology
(240.6490) Optics at surfaces : Spectroscopy, surface

History
Original Manuscript: February 11, 1999
Revised Manuscript: June 2, 1999
Published: September 1, 1999

Citation
Daniel J. Brink and Mike E. Lee, "Confined blue iridescence by a diffracting microstructure: an optical investigation of the Cynandra opis butterfly," Appl. Opt. 38, 5282-5289 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-25-5282

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