[P-CTh6] C6. Optical and Photonic Metrology

[P-CTh6-06] A robust frequency stabilized of Er:fiber frequency comb with relative frequency instability of E-18

*Lulu Yan¹, Mingkun Li^1,2, Xiguang Yang^1,2, Yanyan Zhang¹, Pan Zhang^1,2, Bingjie Rao¹, Xin Chen¹, Ru Yuan¹, Wenge Guo⁴, Shougang Zhang^1,2, Haifeng Jiang^1,2,3 (1. Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences (China), 2. School of Astronomy and Space Sciences, University of Chinese Academy of Sciences (China), 3. University of Science and Technology of China (China), 4. School of Science, Xi’an Shiyou University (China))

[Presentation Style] Online

Highly stable and long-term frequency-controlled femtosecond optical frequency comb is demonstrated in this paper. We stabilized carrier envelope offset frequency onto a RF reference and obtained the in-loop frequency instability is about 4.3×10^-18@1s. We stabilized repetition rate onto an ultrastable laser. The relative frequency instability is 5.3×10^-18@1s.