title: Two-mode beat phase noise of actively modelocked lasers.
abstract: An analytic expression for the phase noise spectrum is estimated when two arbitrary longitudinal modes are selected for beating from the output of an actively mode-locked laser. A separate experiment confirmed the theory qualitatively. It was found that two-mode beating possesses more phase noise than the beating involving the entire mode spectrum, especially at low offset frequency, even though two mode beating noise is decoupled from the RF oscillator noise to the first order.
authors.forename: Sangyoun
authors.initials: S
authors.lastname: Gee
authors.forename: Franklyn
authors.initials: F
authors.lastname: Quinlan
authors.forename: Sarper
authors.initials: S
authors.lastname: Ozharar
authors.forename: Peter
authors.initials: P
authors.lastname: Delfyett