Operation of a Bloch oscillator

K. F. Renk; A. Meier; B. I. Stahl; A. Glukhovskoy; M. Jain; H. Appel; W. Wegscheider

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Operation of a Bloch oscillator

K. F. Renk·A. Meier·B. I. Stahl·A. Glukhovskoy·M. Jain·H. Appel·W. Wegscheider

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Abstract

We report the operation of a Bloch oscillator. The active medium was a staticvoltage driven, doped GaAs/AlAs superlattice which was electromagnetically coupled to a resonator. The oscillator produced tuneable microwave radiation (frequency ~ 60 GHz; power ~ 0.5 mW; efficiency ~ 4 %). The gain (~ 10^4 /cm) was due to the nonlinearity mediated by miniband electrons. We also present a theory of the oscillator. The Bloch oscillator should in principle be feasible for generation of radiation up to frequencies of 10 THz and more.

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K. F. Renk, A. Meier, B. I. Stahl, A. Glukhovskoy, M. Jain, H. Appel, W. Wegscheider. 2005-02-11. Operation of a Bloch oscillator. https://arxiv.org/abs/cond-mat/0502283

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