Ultrafast pulse compression by semiconductor two-photon gain |
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Authors: | Nevet Amir Hayat Alex Orenstein Meir |
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Affiliation: | Department of Electrical Engineering, Technion, Haifa 32000, Israel. nevet@tx.technion.ac.il |
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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 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. |
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