Linear and nonlinear optical properties of one-dimensional photonic crystals containing ZnO defects

Geon Joon Lee, Young Pak Lee, Sung Goo Jung, Chang Kwon Hwangbo, Sunman Kim, Inkyu Park

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21 Scopus citations

Abstract

The linear and nonlinear optical properties of one-dimensional photonic crystals containing ZnO defects were studied by linear absorption spectroscopy and the femtosecond Z -scan technique. Photonic crystals containing ZnO defects, (Ta2 O5 SiO2) 5 ZnO (SiO2 Ta2 O5) 5, were prepared using electron-beam deposition and magnetron sputtering. The transmission spectra of these photonic crystals revealed a defect mode resonance and a broad photonic band gap. The observed transmission spectra could be described by applying the optical transfer matrix formalism to the multilayer structure. When compared with the Z -scan curve of the ZnO film, that of the resonant photonic crystal exhibited a larger transmittance dip. The enhancement of the nonlinear absorption in the resonant photonic crystal is due to the strong confinement of the optical field.

Original languageEnglish
Article number073528
JournalJournal of Applied Physics
Volume102
Issue number7
DOIs
StatePublished - 2007

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