4:15 PM - 4:45 PM [F-2-02 (Invited)] Nonlinear Optical Application of Nitride Semiconductors: Polarity-Inverted Waveguides and Microcavities ○R. Katayama1, M. Uemukai1, T. Tanikawa1 (1.Osaka Univ. (Japan)) https://doi.org/10.7567/SSDM.2019.F-2-02