title: Wide-bandwidth phase lock between a CW laser and a frequency comb based on a feed-forward configuration.
abstract: Wide-bandwidth phase lock between the tooth of a frequency comb and a CW extended-cavity diode laser at 1.55 μm is achieved by the use of an acousto-optical frequency shifter in a feed-forward configuration. The coherence properties of the comb are efficiently transferred to the CW laser, whose linewidth is narrowed down to the ∼10 KHz comb level. A maximum control bandwidth of ∼0.6 MHz has been experimentally achieved, limited by the transit time of the acoustic wave inside the frequency shifter.
authors: Dipartimento di Fisica—Politecnico di Milano, Polo di Lecco, Via Ghislanzoni 24, 23900 Lecco, Italy. d.gatti@polimi.it
authors: T
authors: T
authors: Sala
authors: D
authors: D
authors: Gatti
authors: A
authors: A
authors: Gambetta
authors: N
authors: N
authors: Coluccelli
authors: G
authors: G
authors: Galzerano
authors: P
authors: P
authors: Laporta
authors: M
authors: M
authors: Marangoni