Experiment Study on Optical Frequency Measurement Absolute frequency measurement of 633nm wavelength secondary standard by an Er-doped fiber femtosecond optical comb

摘要

A frequency measurement system is set up based on an Er-doped femtosecond fiber comb.A hydrogen clock is used as a frequency standard, the optical frequency comb is traced to the hydrogen clock.An absolute optical frequency measurement is realized by beating frequency between highly stable Er-dopedfemtosecond fiber comb and the 633nm wavelength secondary standard. As a result, different frequencypeaks were achieved.