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Based on plane wave expansion method, the band gaps of a two-dimensional terahertz photonic crystal with a square lattice are optimized through varying structural parameters. The electromagnetic field distribution is accurately described for a terahertz photonic crystal splitter by finite difference time domain method.
Femtosecond laser microfabrication of 3D optical memories and photonic crystal (PhC) structures in solid glasses and liquid resins are demonstrated. The optical memories can be read out from both transmission and emission images. The PhC structures reveal clear signatures of photonic bandgap (PBG) and microcavity formation.
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