Novel phase-locking schemes for the carrier envelope offset frequency of an optical frequency comb. (15th October 2015)

• Record Type: Journal Article
• Authors: Okubo, Sho; Onae, Atsushi; Hosaka, Kazumoto; Sera, Hideyuki; Inaba, Hajime; Hong, Feng-Lei
• Is Part Of: Applied physics express. Volume 8:Number 11(2015:Nov.)
• Publication Date: 2015-10-15
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.8.112402
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We propose simple schemes to phase-lock the carrier envelope offset frequency ( f ceo ) referring to the repetition rate ( f rep ) of an optical frequency comb. We demonstrate the locking of f ceo such that f ceo = (1/2) f rep, (1/3) f rep, and (2/3) f rep . The Allan deviation and signal-to-noise ratio of the coherent δ-function peak for the in-loop beat signal are 5.3 × 10 −17 /τ and 80–85 dB·Hz, respectively, where τ is the averaging time of the frequency measurement. These new locking schemes simplify the sign and mode-number determination in frequency measurements.