Power Load and Temperature Dependence of Cold-Electron Bolometer Optical Response at 350 GHz
Journal article, 2014

Cold-electron bolometers (CEBs) integrated with twin-slot antennas have been designed and fabricated. Optical response was measured at bath temperatures of 0.06 to 3 K using blackbody radiation source at temperatures of 3 to 15 K. The responsivity of 0.3 * 10(9) V/W was measured at 2.7-K blackbody temperature that is close to the temperature of the cosmic microwave background. Optical measurements indicate quasi-optical coupling efficiency of up to 60% at low phonon temperature and low signal level. Estimations for bolometer responsivity were made for practical range of bath temperatures and blackbody radiation temperatures. The estimated ultimate dark responsivity at 100-mK bath temperature can approach S-V = 10(10) V/W and reduces down to 1.1 * 10(8) V/W at 300 mK for a device with absorber volume of 5 * 10(-20) m(3).

Author

Mikhail Tarasov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Valerian S. Edelman

Russian Academy of Sciences

Sumedh Mahashabde

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Leonid Kuzmin

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN)

Vol. 24 6 1- 6786305

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Physical Sciences

Condensed Matter Physics

Infrastructure

Nanofabrication Laboratory

DOI

10.1109/TASC.2014.2316196

More information

Latest update

4/16/2018