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David A. B. Miller - Abstracts
 
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Publication # 120

W. H. Knox, J. E. Henry, K. W. Goossen, K. D. Li, B. Tell, D. A. B. Miller, D. S. Chemla, A. C. Gossard, J. English, S. Schmitt-Rink, "Femtosecond Excitonic Optoelectronics" IEEE J. of Quantum Electronics, 24, 2586-2595, (1989).

The authors discuss a novel approach to femtosecond optoelectronics which uses the excitonic response to electric fields as a detector and the excitonic nonlinear response to optical fields as a generator. The sensitivity of the quantum-well exciton to applied electric fields is used to measure electrical transients with femtosecond time resolution. The authors examine several mechanisms for femtosecond electrical pulse generation, including exciton ionization and two-photon absorption, and present measurements of the propagation properties of coplanar striplines on ultrathin semiconductor substrates in the 1-100-THz frequency range. The generation and detection of an electrical pulse with a 180-fs risetime propagating on a coplanar stripline on GaAs/AlGaAs quantum wells are demonstrated

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