D. V. Petrov, V. V. Lebedev, V. V. Bryksin, I. V. Pleshakov, “Optical excitation of space-charge waves involving interband transitions in Bi$_{12}$GeO$_{20}$ crystals”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2008, Volume 34, Issue 13,Pages 15

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Optical excitation of space-charge waves involving interband transitions in Bi$_{12}$GeO$_{20}$ crystals

D. V. Petrov^ab, V. V. Lebedev^ab, V. V. Bryksin^ab, I. V. Pleshakov^ab

^a Academic Physics and Technology University, Russian Academy of Sciences, St. Petersburg, 195520, Russia
^b Ioffe Institute, St. Petersburg

Abstract: The excitation of space-charge waves in a semiconductor (Bi$_{12}$GeO$_{20}$) crystal using light with photon energy close to the bandgap width has been studied. The sample crystal has been optically excited by exposure to an oscillating interference pattern. The existing model notions are consistent with the experimental results.

Received: 16.11.2007