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Terahertz photonic crystals

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Title: Terahertz photonic crystals
Author: Jian, Zhongping
Advisor: Mittleman, Daniel M.
Degree: Doctor of Philosophy thesis
Abstract: This thesis describes the study of two-dimensional photonic crystals slabs with terahertz time domain spectroscopy. In our study we first demonstrate the realization of planar photonic components to manipulate terahertz waves, and then characterize photonic crystals using terahertz pulses. Photonic crystal slabs at the scale of micrometers are first designed and fabricated free of defects. Terahertz time domain spectrometer generates and detects the electric fields of single-cycle terahertz pulses. By putting photonic crystals into waveguide geometry, we successfully demonstrate planar photonic components such as transmission filters, reflection frequency-selective filters, defects modes as well as superprisms. In the characterization study of out-of-plane properties of photonic crystal slabs, we observe very strong dispersion at low frequencies, guided resonance modes at middle frequencies, and a group velocity anomaly at high frequencies. We employ Finite Element Method and Finite-Difference Time-Domain method to simulate the photonic crystals, and excellent agreement is achieved between simulation results and experimental results.
Citation: Jian, Zhongping. (2006) "Terahertz photonic crystals." Doctoral Thesis, Rice University. http://hdl.handle.net/1911/18921.
URI: http://hdl.handle.net/1911/18921
Date: 2006

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