Planar Frequency Selective Bolometric Array at 350 GHz
Journal article, 2015

In this paper we describe a bolometric focal plane array consisting of the Cold Electron Bolometer integrated in a Frequency Selective Surface fabricated on a Silicon substrate with a backshort. This array is formed by a periodic pattern of conducting annular square and ring shapes and the two-terminal CEB is embedded directly in the element. The CEBs impedance has been matched to the FSS which provides resonant interaction with incident sub-millimetre radiation. A further degree of freedom for the tuning is via varying the thickness of the substrate. We've been able to design the FSS at 350 GHz with peak coupling of more than 90% as is common for FSS based filters. A prototype of such a detector has been fabricated and optical response to blackbody radiation has been measured, indicating responsivities of 2*10^9 V/W and higher at 185 mK and 3*10^8 V/W and higher at 300 mK. The details of this new concept, together with numerical simulations and optical measurements are presented.

planar detector array

submm wave detectors

Cold-Electron Bolometers

frequency selective surfaces

Author

Sumedh Mahashabde

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

Alexander Sobolev

National Research University of Electronic Technology (MIET)

Moscow Institute of Physics and Technology

Mikhail Tarasov

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

Gombo Tsydynzhapov

Terasense Development Labs LLC 2

Russian Academy of Sciences

Leonid Kuzmin

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

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 5 1 37-43 6985683

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Infrastructure

Nanofabrication Laboratory

Subject Categories

Condensed Matter Physics

DOI

10.1109/TTHZ.2014.2377247

More information

Latest update

3/2/2020 1