Narrow-linewidth and highly stable optical frequency comb realized with a simple electro-optic modulator system in a mode-locked Er:fiber laser

• DOI: 10.7567/1347-4065/aafb2a
• Publication Date: 2018-12-28T22:30:30Z
• Authors: Yu Asahina; Kazumichi Yoshii; Yuko Yamada; Yusuke Hisai; Sho Okubo; Masato Wada; Hajime Inaba; Takemi Hasegawa; Yoshinori Yamamoto; Feng-Lei Hong
• Keywords: Laser linewidth; Beat (acoustics); Servo bandwidth

We demonstrate a mode-locked Er:fiber laser with compact fiber-pigtailed optical bench containing free-space electro-optic modulator for high-speed feedback control. The achieved servo bandwidth of the beat frequency between given comb component and reference is approximately 850 kHz. realization narrow-linewidth highly stable confirmed by measuring both in-loop out-of-loop frequencies. also measurement two iodine-stabilized Nd:YAG lasers through without stability degradation. developed can work continuously weeks maintenance.