Abstract

We demonstrate experimentally the compression of femtosecond-scale pulses by two-photon gain in a compact electrically driven AlGaAs waveguide. Dynamic control of the pulse width from 240 to $140\mathrm{fs}$ is achieved by varying the current injection levels—in good agreement with the calculations. The pulse width is measured by a high- sensitivity intensity autocorrelator based on two-photon absorption in a GaAs photomultiplier tube.

© 2010 Optical Society of America

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