Planar Frequency Selective Bolometric Array at 350 GHz
Artikel i vetenskaplig tidskrift, 2014

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.

submm wave detectors

planar detector array

Cold-Electron Bolometers

frequency selective surfaces

Författare

Sumedh Mahashabde

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Alexander Sobolev

Moscow Institute of Physics and Technology

National Research University of Electronic Technology (MIET)

Mikhail Tarasov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Gombo Tsydynzhapov

Russian Academy of Sciences

Terasense Development Labs LLC 2

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 5 37-43 6985683

Styrkeområden

Nanovetenskap och nanoteknik

Infrastruktur

Nanotekniklaboratoriet

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1109/TTHZ.2014.2377247