Abstract
A change of up to 40% of the relative transmission at the photonic bandgap edge has been observed in photoconductive inverted ZnO opals under ultraviolet laser irradiation. This effect has been related to the irradiation-stimulated change of the refraction index of the photonic crystal. The desorption (chemosorption) of oxygen molecules on the surface of the ZnO backbone leading to destruction (formation) of a depletion layer at the ZnO surface has been suggested as the mechanism responsible for the slow variation of polarizability of the inverted ZnO opal.
Original language | English (US) |
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Pages (from-to) | 461-463 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 33 |
Issue number | 5 |
DOIs | |
State | Published - Mar 1 2008 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics