Skip to main content Accessibility help
×
Home

Angular Dispersion of Photonic Pseudogap in Opal vs Inverse Opal

  • Lay Kuan Teh (a1) and Chee Cheong Wong (a2)

Abstract

We have recently achieved a non-dispersive, low-order pseudogap in the blue region near the L-point in electrodeposited ZnO inverse opal. This behavior is a consequence of the change in the interconnecting network of interstices from a low dielectric (air) in the opal to a high dielectric one in the inverse opal. To verify this, we present the calculated photonic bands along the LW direction, which corresponds to the angular range explored experimentally by means of angle-resolved spectroscopy. We also studied the dispersion as a function of refractive index contrast (RIC). Further increase of the RIC above the threshold necessary to open up a complete photonic bandgap between the 8th and 9th bands does not have significant effects on improving the non-dispersive characteristic in the pseudogap. The results could be extended to make other inverse photonic structures of different symmetry with non-dispersive bands suitable for the study of optical processes involving low group velocity.

Copyright

References

Hide All
1 Ho, K.M., Chan, C.T., and Soukoulis, C.M., Phys. Rev. Lett. 65, 3152 (1990).
2 Busch, K. and John, S., Phys. Rev. E 58, 3896 (1998).
3 Biswas, R., Sigalas, M.M., Subramania, G. et al. Phys. Rev. B 57, 3701 (1998).
4 Gaillot, D., Yamashita, T., and Summers, C.J., Phys. Rev. B 72, 205109 (2005).
5 Li, Z.-Y and Zhang, Z.-Q., Phys. Rev. B 62, 1516 (2000).
6 Galisteo-Lopez, J.F. and Lopez, C., Phys. Rev. B 70, 035108 (2004).
7 Sakoda, K., Optical Properties of Photonic Crystals. (Springer-Verlag, New York, 2001).
8 Teh, L.K., Yeo, K.H., and Wong, C.C., Appl. Phys. Lett. 89, 051105 (2006).
9 Johnson, S.G. and Joannopoulos, J.D., Opt. Exp. 8, 173 (2001).
10 Romanov, S.G., J. of Nonlinear Optical Physics and Materials 7, 181 (1998).

Keywords

Angular Dispersion of Photonic Pseudogap in Opal vs Inverse Opal

  • Lay Kuan Teh (a1) and Chee Cheong Wong (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed