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VOLUME 52 (1990) | ISSUE 11 | PAGE 1189
Direct measurement of electron-phonon coupling characteristics in YBa2Cu307 by femtosecond laser spectroscopy
Femtosecond laser spectroscopy has been used for a real-time study of the relaxation of an induced optical response in a YBa2Cu307 film in the spectral interval 620-680 nm. The relaxation time r varies with the wavelength, over the interval 0.5-1.5 ps. The electron-phonon coupling parameter is found from the measurement of r : Α (ω2) = 150meV2.