Tunable optical frequency comb from a compact and robust Er:fiber laser. (2020)

• Record Type: Journal Article
• Authors: Zhu, Zhiwei; Liu, Yang; Luo, Daping; Gu, Chenglin; Zhou, Lian; Xie, Gehui; Deng, Zejiang; Li, Wenxue
• Is Part Of: High power laser science and engineering. Volume 8(2020)
• Publication Date: 2020
• Subjects: optical frequency comb, -- all-polarization-maintaining, -- mode-locking, -- fiber laser; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2020.17
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract : We report on a compact and robust self-referenced optical frequency comb with a tunable repetition rate, generated by an all-polarization-maintaining (PM) mode-locked Er-doped fiber laser. The spacing between comb teeth can be tuned above 300 kHz at a repetition rate of 101 MHz. The repetition rate and the carrier–envelope offset of the laser are stabilized separately, and the relative residual phase noises are determined to be $336~\unicode[STIX]{x03BC}\text{rad}$ and 713 mrad (1 Hz–1 MHz). The accurate frequency characteristics and the stable structure show great potential for the use of such a comb in applications of precision measurements.