All-fiber-based laser with 200 mHz linewidth

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2019,（7）
• 页码范围: 71-74
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201917.071407

摘要

We demonstrate the frequency stabilization of a 1.55 μm erbium-doped fiber laser by locking it to a 5-km-long optical fiber delay line (FDL).The stabilized laser is characterized via comparison with a second identical laser system.We obtain a fractional frequency stability of better than 3 × 10-15 over time scales of 1-10 s and a laser linewidth of 0.2 Hz,which is the narrowest linewidth of an FDL-stabilized laser observed to date.