Picosecond ultrasonics time resolved spectroscopy using a photonic crystal fiber |
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| Authors: | Rossignol C Rampnoux J M Dehoux T Dilhaire S Audoin B |
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| 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 |
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| 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. |
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