Diamond heat sinking of terahertz antennas for continuous-wave photomixing

T. Ackemann, M. Alduraibi, S. Campbell, S. Keatings, P. Luke Sam, H. Fraser, A. S. Arnold, E. Riis, M. Missous

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Abstract

The generation of cw Terahertz radiation from photomixing in low-temperature grown GaAs is limited by the thermal load for single emitters. We propose a new heat sinking scheme based on high thermal conductivity, transparent crystalline heat spreaders as diamond in direct contact with the active zone. A first working device based on recessed electrodes is demonstrated and has a significant power dissipation capability of more than 0.75W (average). The electrical and terahertz characteristics are analyzed.

Original languageEnglish
Article number123109
Number of pages6
JournalJournal of Applied Physics
Volume112
Issue number12
DOIs
Publication statusPublished - 15 Dec 2012

Keywords

  • antennas
  • diamond
  • electrodes
  • gallium arsenide
  • heat sinks
  • thermal conductivity

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