[10p-W834-1~14] 3.5 Laser system and materials

[10p-W834-4] Fabrication of Er-doped microcavity for on-chip mode-locked laser

〇Riku Imamura¹, Tomoki Suzuki¹, Ishida Rammaru¹, Ryo Suzuki¹, Shun Fujii¹, Mizuki Ito¹, Hideyuki Maki^1,3, Lan Yang², Takasumi Tanabe¹ (1.Keio Univ., 2.Washington Univ., 3.JST-PRESTO)

Keywords:laser, mode-locked, cavity

We are producing on-chip mode-locked laser with carbon nanotube and erbium-doped microcavity. In our previous work, we reported saturable absorption in CNT on microtoroids. In this work, we report on the successful fabrication of Er-doped silica microtoroid by sol-gel method. The Q factor was 1.5×10^5. We obtained up-conversion and it means that Er ions were doped silica microresonator.