Abstract-Terahertz Heterodyne Array Receivers for Astronomy

Urs U. Graf, 

Cornelia E. Honingh, 

Karl Jacobs, 

Jürgen Stutzki

http://link.springer.com/article/10.1007%2Fs10762-015-0171-7
We review the development of multi-pixel heterodyne receivers for astronomical research in the submillimeter and terahertz spectral domains. We shortly address the historical development, highlighting a few pioneering instruments. A discussion of the design concepts is followed by a presentation of the technologies employed in the various receiver subsystems and of the approaches taken to optimize these for current and future instruments.