2.5THz multipixel heterodyne receiver based on NbN HEB mixers
Artikel i vetenskaplig tidskrift, 2006

A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5m thick Si3N4/ SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. The gain bandwidth of the HEB mixers on Si3N4/ SiO2 membranes was found to be 0.70.9 GHz, which is much smaller than for similar devices on silicon. Application of buffer layers and use of alternative types of membranes (e.g. silicon-on-insulator) is under investigation.

THz camera

membrane

NbN films

HEB mixer

Författare

Serguei Cherednichenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågs- och terahertzteknologi

Vladimir Drakinskiy

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågs- och terahertzteknologi

Jean Baubert

Benoit Lecomte

Frederik Dauplay

Jean-Michel Krieg

Yan Delorme

Alexandre Feret

Heinz-Wilhelm Huebers

Alexei Semenov

Gregory Gol'tsman

Proc.SPIE,

Vol. 6275 62750I-1

Ämneskategorier

Annan elektroteknik och elektronik

ISBN

0-8194-6340-X