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8 October 2004 Antenna-coupled transition-edge hot-electron microbolometers
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We are developing a new type of detector for observational cosmology and astrophysical research. Incoming radiation from the sky is coupled to a superconducting microstrip transmission line that terminates in a thin film absorber. At sub-Kelvin temperature, the thermal isolation between the electrons and the lattice makes it possible for the electrons in the small absorber (100's of cubic micro-meter) and superconducting bilayer (Transition Edge Sensor) to heat up by the radiation absorbed by the electrons of the normal absorbing layer. We call this detector a Transition-edge Hot-electron Micro-bolometer (THM). THMs can be fabricated by photo lithography, so it is relatively easy to make matched detectors for a large focal plane array telescope. We report on the thermal properties of Mo/Au THMs with Bi/Au absorbers.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shafinaz Ali, Peter T. Timbie, Siddharth Malu, Dan McCammon, Kari L. Nelms, Rashmi Pathak, Daniel W. van der Weide, Christine A. Allen, J. Abrahams, James A. Chervenak, Wen-Ting Hsieh, Timothy M. Miller, S. Harvey Moseley Jr., Thomas R. Stevenson, and Edward J. Wollack "Antenna-coupled transition-edge hot-electron microbolometers", Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004);


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