Antenna coupled direct detector for millimetre and submillimetre astronomy based on 2D electron gas in semiconducting heterostructure

Dmitry Morozov, Philip Mauskopf, Christopher Dunscombe, Mohamed Henini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The energy resolution of a detector is related to the figure of merit NEP × √τ which is proportional to the heat capacity of the detector. Hot electron (cold electron) devices have much lower heat capacity than bolometers with silicon nitride based thermal isolation. Traditional hot electron bolometers (HEB) require sub-micron fabrication for use at submm wavelengths and it is difficult to simultaneously couple radiation and read out these devices. The 2D electron gas (2DEG) in a semiconductor heterojunction effectively acts as a metal film with a thickness of a few angstroms and a tunable density and electron mobility. We describe a HEB that uses a 2DEG as an absorber and present simulations of optical coupling schemes for this type of detector including an antenna coupled to a coplanar waveguide with distributed 2DEG absorbers.

Original languageEnglish (US)
Title of host publicationMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
DOIs
StatePublished - Sep 26 2008
Externally publishedYes
EventMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV - Marseille, France
Duration: Jun 26 2008Jun 28 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7020
ISSN (Print)0277-786X

Other

OtherMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
CountryFrance
CityMarseille
Period6/26/086/28/08

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Keywords

  • Bolometric detector
  • Heterostructure
  • Two dimensional electron gas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Morozov, D., Mauskopf, P., Dunscombe, C., & Henini, M. (2008). Antenna coupled direct detector for millimetre and submillimetre astronomy based on 2D electron gas in semiconducting heterostructure. In Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV [702021] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7020). https://doi.org/10.1117/12.789753