Strain-induced non-linear optical characteristics of pyroelectric PbVO3 epitaxial thin films

Seol Hee Oh, Hae Young Shin, Seokhyun Yoon, Jai Seok Ahn, Janghwan Cha, Suklyun Hong, Sung Jin Kang, Miyoung Kim, Sukgeun Choi, Changjae Roh, Jongseok Lee, William Jo

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Highly strained PbVO3 films have potential applications in pyroelectric sensors and optoelectronic devices. To understand how strain influences the nonlinear optical characteristic of PbVO3, highly distorted tetragonal PbVO3 epitaxial thin films were grown on LaAlO3 and SrTiO3 substrates. Using Raman scattering spectroscopy, theoretical and experimental studies on the phonon spectra yield insights on the strained structures of V-O apical bondings. Effects of applied strain on the linear optical properties of PbVO3 thin films were experimentally characterized by spectroscopic ellipsometry. Second-order nonlinear susceptibility tensor components of PbVO3/SrTiO3 thin films were determined to be almost twice as large as those of PbVO3/LaAlO3 thin films.

Original languageEnglish
Pages (from-to)62-72
Number of pages11
JournalOptical Materials Express
Issue number1
StatePublished - 2017

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© 2016 Optical Society of America.


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