Diamond heat sinking of terahertz antennas for continuous-wave photomixing

Ackemann, T.; Alduraibi, M.; Campbell, S.; Keatings, S.; Luke Sam, P.; Fraser, H.; Arnold, A. S.; Riis, E. and Missous, M. (2012). Diamond heat sinking of terahertz antennas for continuous-wave photomixing. Journal of Applied Physics, 112(12), article no. 123109.

DOI: https://doi.org/10.1063/1.4770460

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 0.75 W (average). The electrical and terahertz characteristics are analyzed.

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• Item ORO ID
• 37452
• Item Type
• Journal Item
• ISSN
• 0021-8979
• Extra Information
• This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
• Keywords
• antennas; diamond; electrodes; gallium arsenide; heat sinks; microwave photonics; photoconducting devices; terahertz waves; thermal conductivity; radiowave and microwave technology; antennas: theory, components and accessories; optoelectronic devices
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2012 American Institute of Physics
• Depositing User
• Helen Fraser