Operation of a semiconductor superlattice oscillator

  • Renk K
  • Stahl B
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We report an experimental study of a semiconductor superlattice oscillator and present an analysis of the origin of gain. The oscillator generated microwave radiation (at frequencies around 60 GHz). An analysis of the results suggests that the oscillator operated in a pure charge accumulation mode that can occur in a medium with a negative differential mobility. We relate the negative differential mobility to miniband transport. Additionally, we propose a microwave-terahertz double oscillator that may be suitable to realize a terahertz Bloch oscillator. © 2011 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Millimeter wave oscillator
  • Semiconductor superlattice
  • Space charge domains

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  • K. F. Renk

  • B. I. Stahl

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