Laser-induced above-band-gap transparency in GaAs |
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| Authors: | Srivastava Ajit Srivastava Rahul Wang Jigang Kono Junichiro |
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| Institution: | Department of Electrical and Computer Engineering, Rice Quantum Institute, and Center for Nanoscale Science and Technology, Rice University, Houston, Texas 77005, USA. |
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| Abstract: | We report the observation of large (approximately 40%) laser-induced above-band-gap transparency in GaAs at room temperature. The induced transparency is present only during the pulse width of the driving midinfrared laser pulses and its spectral shape is consistent with a laser-induced blueshift of the band edge. Our simulations based on the dynamic Franz-Keldysh effect reproduce the salient features of the experimental results, demonstrating, in particular, that the amount of the band edge shift is approximately given by the ponderomotive potential. |
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