10:15 AM - 10:30 AM [17a-D215-4] Investigations towards higher-peak-power operation of short-pulse photonic-crystal surface-emitting lasers with global band-edge frequency gradation 〇Kazuki Nigo1, Takuya Inoue1, Ryohei Morita1, Susumu Noda1 (1.Kyoto Univ.)