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.

oscillators

noise propagation

niobium

heterodyne receivers

superconductivity

Författare

J. Kawamura

Chalmers, Organisation okänd

R. Blundell

Chalmers, Organisation okänd

C.-Y.E. Tong

Chalmers, Organisation okänd

G.N. Gol'tsman

Chalmers, Organisation okänd

E.M. Gershenzon

Chalmers, Organisation okänd

Boris Voronov

Chalmers, Organisation okänd

Serguei Cherednichenko

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

Applied Physics Letters

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

Vol. 70 12 1691-1621

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1063/1.118634

Mer information

Skapat

2018-03-03