Low noise NbN lattice-cooled superconducting hot-electron bolometric mixers at submillimeter wavelengths

被引：37

作者：

Kawamura, J ^{[1
]}

Blundell, R ^{[1
]}

Tong, CYE ^{[1
]}

Goltsman, G ^{[1
]}

Gershenzon, E ^{[1
]}

Voronov, B ^{[1
]}

Cherednichenko, S ^{[1
]}

机构：

[1] MOSCOW STATE PEDAG UNIV,MOSCOW 119435,RUSSIA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 12期

关键词：

D O I：

10.1063/1.118634

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 similar to 10 mu m(2) area. The local oscillator power for optimal performance is estimated to be 0.5 mu W, 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. (C) 1997 American Institute of Physics.

引用

页码：1619 / 1621

页数：3

共 11 条

[1]

BLUNDELL R, 1995, P 6 INT S SPAC TER T, P123

[2] SUPERCONDUCTING BOLOMETRIC MIXERS [J].