139 citations · 254 across the 10 of their papers we have counts for
10 papers
Ultrafast all-optical gated amplifier based on ZnO nanowire lasing
Marijn A. M. Versteegh, Peter J. S. van Capel, Jaap I. Dijkhuis
We present an ultrafast all-optical gated amplifier, or transistor, consisting of a forest of ZnO nanowire lasers. A gate light pulse creates a dense electron-hole plasma and excit…
Measurement of light diffusion in ZnO nanowire forests
Marijn A. M. Versteegh, Ruben E. C. van der Wel, Jaap I. Dijkhuis
Optimum design of efficient nanowire solar cells requires better understanding of light diffusion in a nanowire array. Here we demonstrate that our recently developed ultrafast all…
Ultrafast all-optical shutter based on two-photon absorption
Marijn A. M. Versteegh, Jaap I. Dijkhuis
An ultrafast all-optical shutter is presented, based on a simple two-color two-photon absorption technique. For time-resolved luminescence measurements this shutter is an interesti…
Modelling and experiments of self-reflectivity under femtosecond ablation conditions
H. Zhang, S. A. Wolbers, D. M. Krol +2
We present a numerical model which describes the propagation of a single femtosecond laser pulse in a medium of which the optical properties dynamically change within the duration…
Observation of Preformed Electron-Hole Cooper Pairs
Marijn A. M. Versteegh, A. J. van Lange, H. T. C. Stoof +1
Electrons and holes in a semiconductor form hydrogen-atom-like bound states, called excitons. At high electron-hole densities the attractive Coulomb force becomes screened and exci…
Ultrafast screening and carrier dynamics in ZnO: Theory and experiment
Marijn A. M. Versteegh, Tim Kuis, H. T. C. Stoof +1
At carrier densities above the Mott density Coulomb screening destroys the exciton resonance. This, together with band-gap renormalization and band filling, severely affects the op…