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Conference Paper

Ultrafast all-optical switching of 3D photonic band gap crystals - art. no. 66400G


Euser,  T. G.
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Euser, T. G., Wei, H., Kalkman, J., Jun, Y., Guina, M., Suomalainen, S., et al. (2007). Ultrafast all-optical switching of 3D photonic band gap crystals - art. no. 66400G. In ACTIVE PHOTONIC CRYSTALS (pp. G6400-G6400). 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA: SPIE-INT SOC OPTICAL ENGINEERING.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6D5C-4
We present ultrafast optical switching experiments on 3D photonic band gap crystals. Switching the Si inverse opal is achieved by optically exciting free carriers by a two-photon process. We probe reflectivity in the frequency range of second order Bragg diffraction where the photonic band gap is predicted. We observe a large frequency shift of up to 1.5% of all spectral features including the peak that corresponds to the photonic band gap. We also demonstrate large, ultrafast shifts of stop bands of planar GaAs/AlAs photonic structures. We briefly discuss how our results can be used in future switching and modulation applications.