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EnglishA superconducting bolometer with an on-chip lithographic terahertz antenna has been characterized in passive and active mode. Direct detection measurements made with 300K/77K blackbody sources yeld an optical efficiency of 10%. Time response of the bolometer has been obtained at 2.5 and 4.4 THz by illuminating the detector with quantum cascade lasers (QCL) showing a time constant of 1.2 mus. Here we report on the fabrication and the optical characterization of an antenna-coupled hot-spot microbolometer operating in vacuum at liquid helium temperature.
| Titolo: | Optical characterization of a superconducting hotspot air-bridge bolometer |
| Autori interni: | |
| Anno del prodotto: | 2010 |
| Abstract: | A superconducting bolometer with an on-chip lithographic terahertz antenna has been characterized in passive and active mode. Direct detection measurements made with 300K/77K blackbody sources yeld an optical efficiency of 10%. Time response of the bolometer has been obtained at 2.5 and 4.4 THz by illuminating the detector with quantum cascade lasers (QCL) showing a time constant of 1.2 mus. Here we report on the fabrication and the optical characterization of an antenna-coupled hot-spot microbolometer operating in vacuum at liquid helium temperature. |
| Handle: | http://hdl.handle.net/11568/528669 |
| ISBN: | 9781424466559 9781424466573 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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http://hdl.handle.net/11568/528669
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