Ultrafast Optical Generation of Carriers in a DC Electric Field
Recently, several experimental groups have demonstrated that the ultrafast optical excitation of bulk semiconductors and semiconductor microstructures subjected to a DC electric field produces submillimeter electromagnetic radiation.1–5 The fast-changing photocurrent caused by the ultrafast excitation has been identified as a source of such electromagnetic transients.1 However, the theoretical understanding of the photocurrent on femtosecond time scale is still incomplete.
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- A.V. Kuznetsov and C.J. Stanton, Phys. Rev. B, to be published.Google Scholar
- B.B. Hu, A.S. Weling, D.H. Auston, and A.V. Kuznetsov, Proceedings of the Quantum Electronics and Laser Science Conference, Baltimore, MD, 1993, Postdeadline papers, p. QPD16-1/35.Google Scholar