Orientation-controlled epitaxy of A2CuO3 (A: Sr, Ca) films with large optical nonlinearity

T. Manako, Y. Okimoto, M. Izumi, S. Shinomori, M. Kawasaki, H. Kishida, H. Okamoto, T. Fukumura, M. Ohtani, Y. Tokura

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Abstract

The one-dimensional Cu-O chains responsible for the large optical nonlinearity in Sr2CuO3 (SCO) and Ca2CuO3 (CCO) are aligned in one direction in films grown on LaSrAlO4 (LSAO) (1 0 0) substrates by using pulsed laser deposition. The CCO films deposited directly on lattice matched LSAO substrates have a single orientation with high crystallinity, while the SCO films include small portions of misoriented domains. Using a simple model of lattice mismatch, we developed a Sr2TiO4 buffer layer in order to grow orientation-controlled SCO films with both high crystallinity and a sharp optical absorption edge. This technique will be a key to fabricating ultrafast all-optical switches with a waveguide structure.

Original languageEnglish
Pages (from-to)1754-1756
Number of pages3
JournalApplied Physics Letters
Volume79
Issue number12
DOIs
Publication statusPublished - 2001 Sep 17
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Manako, T., Okimoto, Y., Izumi, M., Shinomori, S., Kawasaki, M., Kishida, H., Okamoto, H., Fukumura, T., Ohtani, M., & Tokura, Y. (2001). Orientation-controlled epitaxy of A2CuO3 (A: Sr, Ca) films with large optical nonlinearity. Applied Physics Letters, 79(12), 1754-1756. https://doi.org/10.1063/1.1402161