title: Picosecond ultrasonics time resolved spectroscopy using a photonic crystal fiber.
abstract: We present a broadband picosecond ultrasonics time resolved spectroscopy. Detection of picosecond coherent acoustic phonons using a wavelength continuum generation in a photonic crystal fiber (PCF) with femtosecond laser pulses is developed. Measurements are performed for selected wavelengths of a broad wavelength probe pulse within a bandwidth of 250 nm with an 825 nm center wavelength on two samples made of tungsten and of gallium arsenide.
authors.affiliation: Laboratoire de Mécanique Physique, UMR CNRS 5469, Université Bordeaux 1, 351 cours de la Libération, 33405 Talence, France. c.rossignol@lmp.u-bordeaux1.fr <c.rossignol@lmp.u-bordeaux1.fr>
authors.forename: C
authors.initials: C
authors.lastname: Rossignol
authors.forename: J M
authors.initials: JM
authors.lastname: Rampnoux
authors.forename: T
authors.initials: T
authors.lastname: Dehoux
authors.forename: S
authors.initials: S
authors.lastname: Dilhaire
authors.forename: B
authors.initials: B
authors.lastname: Audoin