Spherical micromirrors from templated self-assembly: Polarization rotation on the micron scale

Coyle, S.; Prakash, G. V.; Baumberg, J. J.; Abdelsalem, M.; Bartlett, P. N.
July 2003
Applied Physics Letters;7/28/2003, Vol. 83 Issue 4, p767
Academic Journal
We demonstrate a fabrication route to individual micron-scale metallic spherical mirrors. The mirrors are prepared by electrochemical growth through the interstitial voids of a self-assembled latex sphere template. Excellent spherical mirrors of Au and Ptare obtained with unusual polarization properties in which multiple reflections with distinct anisotropies are found due to geometric polarization rotation. Such micromirrors can form the basis of low-cost microcavity structures and microlasers.


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