CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

2.5THz multipixel heterodyne receiver based on NbN HEB mixers

Sergey Cherednichenko (Institutionen för mikroteknologi och nanovetenskap, Mikrovågs- och terahertzteknologi) ; Vladimir Drakinskiy (Institutionen för mikroteknologi och nanovetenskap, 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 (2006), p. 62750I-1.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: HEB mixer, THz camera, NbN films, membrane



Denna post skapades 2007-03-08.
CPL Pubid: 23975

 

Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Mikrovågs- och terahertzteknologi (2006-2007)

Ämnesområden

Elektronik

Chalmers infrastruktur