[23a-C200-1~11] 15.4 III-V-group nitride crystals

[23a-C200-6] [Young Scientist Presentation Award Speech] Introduction of 2D-hetero structures to improve the Q-factor of III-nitride-based photonic crystal resonators in the visible range

〇Takenori Iwaya¹, Shuhei Ichikawa^1,2, Dolf Timmerman¹, Jun Tatebayashi¹, Yasufumi Fujiwara¹ (1.Osaka Univ., 2.Research Center for UHVEM, Osaka Univ.)

Keywords:Photonic crystal cavity, III-nitride semiconductor, GaN:Eu

III-nitride-based two-dimensional photonic crystal cavities have wide potential applications, such as quantum information technologies and low threshold laser, however, high-Q-factors have been not achieved yet. Previously, we utilized an H3-type cavity and reported a high experimental Q-factor of 7900, which is the maximum value among the existing reports. In this study, we designed and fabricated a cavity with a two-dimensional heterostructure and achieved a higher Q-factor exceeding 10,000.