title: Weak-wave advancement in nearly collinear four-wave mixing: comment.
abstract: The exponential gain predicted in "Weak-wave advancement in nearly collinear four-wave mixing" [Opt. Express 10, 581 (2002)], disappears when all interacting sidebands are properly taken into account. The demonstration closely follows well-established literature in the formally equivalent temporal domain.
authors.forename: Eric
authors.initials: E
authors.lastname: Lantz
authors.forename: Thibaut
authors.initials: T
authors.lastname: Sylvestre