title: Characterization of the electric field of focused pulsed Gaussian beams for phase-sensitive interactions with matter.
abstract: The electric field of arbitrarily focused few-femtosecond pulsed Gaussian beams is characterized for their phase-sensitive interaction with matter. In the case of a transversally extended interaction region, the electric field is blurred, but effective values of the carrier-envelope phase and carrier frequency can still be defined.
authors.affiliation: Departamento de Física Aplicada, Universidad Politécnica de Madrid, Rios Rosas 21, ES-28003 Madrid, Spain. miguelangel.porras@upm.es
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Porras