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Efficient THz radiation from a nanocrystalline silicon-based multi-layer photomixer

Efficient THz radiation from a nanocrystalline silicon-based multi-layer photomixer

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Authors

  • N. S. Daghestani
  • G. S. Sokolovskii
  • N. E. Bazieva
  • A. V. Tolmatchev
  • E. U. Rafailov

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Original languageEnglish
???articleNumber???095025
Pages-
Number of pages5
JournalSemiconductor Science and Technology
Journal publication dateSep 2009
Journal number9
Volume24
DOIs
StatePublished

Abstract

In this paper we propose a novel type of multiple-layer photomixer based on amorphous/nano-crystalline-Si. Such a device implies that it could be possible to enhance the conversion efficiency from optical power to THz emission by increasing the absorption length and by reducing the device overheating through the use of substrates with higher thermal conductivity compared to GaAs. Our calculations show that the output power from a two-layer Si-based photomixer is at least ten times higher than that from conventional LT-GaAs photomixers at 1 THz.

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