title: Autocorrelation measurement of 6-fs pulses based on the two-photon-induced photocurrent in a GaAsP photodiode.
abstract: We experimentally characterize the two-photon response of a GaAsP photodiode by use of a femtosecond Ti:sapphire laser tuned below the diode bandgap. The photodiode is shown to be highly suitable for real-time second-order autocorrelation measurements of pulses as short as 6fs in duration and with energies as small as a few picojoules.
authors.forename: J K
authors.initials: JK
authors.lastname: Ranka
authors.forename: A L
authors.initials: AL
authors.lastname: Gaeta
authors.forename: A
authors.initials: A
authors.lastname: Baltuska
authors.forename: M S
authors.initials: MS
authors.lastname: Pshenichnikov
authors.forename: D A
authors.initials: DA
authors.lastname: Wiersma