Low noise NbN lattice-cooled superconducting hot-electron bolometric mixers at submillimeter wavelengths
Artikel i vetenskaplig tidskrift, 1997

Lattice-cooled superconducting hot-electron bolometric mixers are used in a submillimeter-wave waveguide heterodyne receiver. The mixer elements are niobium nitride film with 3.5 nm thickness and ∼ 10 μm2 area. The local oscillator power for optimal performance is estimated to be 0.5 μW, and the instantaneous bandwidth is 2.2 GHz. At an intermediate frequency centered at 1.4 GHz with 200 MHz bandwidth, the double sideband receiver noise temperature is 410 K at 430 GHz. The receiver has been used to detect molecular line emission in a laboratory gas cell.


noise propagation


heterodyne receivers



J. Kawamura

Chalmers, Unknown organization

R. Blundell

Chalmers, Unknown organization

C.-Y.E. Tong

Chalmers, Unknown organization

G.N. Gol'tsman

Chalmers, Unknown organization

E.M. Gershenzon

Chalmers, Unknown organization

Boris Voronov

Chalmers, Unknown organization

Serguei Cherednichenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 70 1691-1621


Atom- och molekylfysik och optik

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