Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides

Edgar Yoshio Morales Teraoka, Daniel H. Broaddus, Tomohiro Kita, Atsushi Tsukazaki, Masashi Kawasaki, Alexander L. Gaeta, Hirohito Yamada

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We report the observation of nonlinear optical effects in the visible spectrum using ZnO channel waveguides. We demonstrate sixfold spectral broadening and a 2π phase shift due to self-phase modulation in ZnO channel waveguides using femtosecond optical pulses with a center wavelength of 840 nm. We measured a value for the nonlinear parameter γ of 13.9±3.0 W-1 m-1, which is more than 1300 times that of a highly nonlinear fiber. The calculated intensity-dependent refractive index is found to be consistent with previously reported values of bulk single-crystal ZnO.

Original languageEnglish
Article number071105
JournalApplied Physics Letters
Issue number7
Publication statusPublished - 2010 Aug 16
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Teraoka, E. Y. M., Broaddus, D. H., Kita, T., Tsukazaki, A., Kawasaki, M., Gaeta, A. L., & Yamada, H. (2010). Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides. Applied Physics Letters, 97(7), [071105].