Nonlinear optical responses in two-dimensional photonic crystals

Shin ichiro Inoue, Shiyoshi Yokoyama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A two-dimensional (2D) highly nonlinear lithium niobate (LN) photonic crystal (PhC) waveguide is fabricated with the aim of studying its nonlinear optical properties. We show a large enhancement of the second-harmonic generation (SHG) in the 2D LN PhCs, originating from resonance between the external pump laser field and a photonic band mode. The SHG enhancement results agree well with the experimental photonic band structure obtained by an angle-dependent optical reflectivity and the theoretical band structure generated by three-dimensional finite-difference time-domain calculations. These results open new possibilities for the use of 2D LN PhC waveguide in integrated nonlinear optical applications.

Original languageEnglish
Pages (from-to)470-472
Number of pages3
JournalThin Solid Films
Issue number2
Publication statusPublished - Nov 30 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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