title: Optically controlled transmission of InGaAsP epilayers.
abstract: We investigate the transmission of InGaAsP epilayers lattice matched to InP substrates under optical excitation at normal incidence to the surface. Near the gap wavelength (lambda = 1.3 microm) we observe a transmission change of 20% for a 0.5-mW pump beam at a wavelength lambda(2) = 790 nm. Switching dynamics are shown to be limited by carrier lifetimes of tau approximately 2 nsec. A simple analysis based on parabolic bands and direct electronic transitions provides a good description of the experiments.
authors.forename: W
authors.initials: W
authors.lastname: Kowalsky
authors.forename: K J
authors.initials: KJ
authors.lastname: Ebeling