Photonic properties of an inverted face centered cubic opal under stretch and shear

Babin, V.; Garstecki, P.; Hołyst, R.
March 2003
Applied Physics Letters;3/10/2003, Vol. 82 Issue 10, p1553
Academic Journal
We present the results of numerical calculations of the dispersion relations for an inverted fcc opal structure subjected to a stretch and shear. We find that shearing of the crystal only lowers the gap width and slightly changes the midgap frequency. Interestingly, that in a large range of stretch amplitudes (up to 10%) the gap width is preserved and even slightly enhanced. The midgap frequency depends almost linearly on the stretch amplitude allowing for tuning an inverted fcc opal structure to a desired operational frequency. This last property may be important for the manufacturing process.


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