[17a-D215-1~10] 3.10 Photonic structures and phenomena (formerly 3.11)

[17a-D215-2] Enhancement of linear-polarization degree of emitted beam from photonic-crystal surface-emitting lasers (PCSELs)

〇Eiji Miyai^1,2, Wataru Kunishi^1,2, Takuya Inoue¹, Koki Izumi¹, Masahiro Yoshida¹, Menaka De Zoysa¹, Kenji Ishizaki¹, Susumu Noda¹ (1.Kyoto Univ., 2.ROHM Co., Ltd.)

Keywords:Semiconductor laser, Photonic crystal

Photonic crystal lasers (PCSELs) enable both high-power operation and high-quality beam, and are expected for laser processing, sensing etc. In the development from now on, the flexibility of design satisfying individual specifications becomes important. For example, in a certain optical system, linear polarization of the beam is desirable. Thus, based on optimization by quantum annealing, we realized the beam with high polarization degree by optimization of the lattice-point shape and introduction of Gaussian current-density distribution.