We describe broadband coherent transmission studies of two-dimensional photonic crystals consisting of a hexagonal array of air holes in a dielectric slab in a planar waveguide. By filling several of the air holes in the photonic crystal slab, we observe the signature of a defect mode within the stop band, in both the amplitude and phase spectra. The experimental results are in reasonable agreement with theoretical calculations using the transfer matrix method.
© 2004 Optical Society of America
Zhongping Jian, Jeremy Pearce, and Daniel M. Mittleman, "Defect modes in photonic crystal slabs studied using terahertz time-domain spectroscopy," Opt. Lett. 29, 2067-2069 (2004)