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Suppression of pump-induced frequency noise in fiber-laser frequency combs leading to sub-radian fceo phase excursions

Published

Author(s)

John J. McFerran, William C. Swann, Brian R. Washburn, Nathan R. Newbury

Abstract

We discuss the origins and the suppression of the large frequency jitter on the carrier-envelope offset frequency(fceo) of fiber-laser frequency combs. While this frequency noise appears most prominently on fceo, its effects are felt across the frequency comb and it is a potential limiting factor in applications of fiber-laser frequency combs. Here we show that its origin lies in the white amplitude noise on the pump laser out-put. We dramatically reduce this noise by operating the pump laser in a lower-noise state, i.e. at higher pump current, and by more aggressively feeding back to the pump current with an optimal feedback network. We demonstrate instrument-limited fceo linewidths and an integrated fceo phase jitter of 1 rad.
Citation
Applied Physics B-Photophysics and Laser Chemistry

Keywords

Fiber laser frequency comb, optical frequency metrology

Citation

McFerran, J. , Swann, W. , Washburn, B. and Newbury, N. (2006), Suppression of pump-induced frequency noise in fiber-laser frequency combs leading to sub-radian f<sub>ceo</sub> phase excursions, Applied Physics B-Photophysics and Laser Chemistry, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32327 (Accessed June 5, 2023)
Created July 31, 2006, Updated October 12, 2021