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...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.展开更多
基金supported by the National Natural Science Foundation of China(NSFC)(Nos.11604353,11274324,and 11704391)the Key Research Program of the Chinese Academy of Sciences(No.KJZD-EWW02)
文摘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.
