ISSTT Proceedings

ISSTT Proceedings

You searched for:search icon

No Keywords
Showing 0 of items from your search. Start over 

Review Of Heb Heterodyne Detectors And Receiver Systems For The Thz Range: Present And Future (Invited Talk)

Authors:
Sigfrid Yngvesson
Abstract:
The field of Heterodyne THz detectors using the hot-electron effect in superconductors was initiated through the pioneering Russian work by Gershenzon et al. Their version of this general type of detector came to be distinguished as the PHEB (`Phonon-Cooled Hot Electron Bolometer') after Dan Prober proposed what is now known as the DHEB ('Diffusion-Cooled Hot Electron Bolometer'). Since that time, both types of HEB devices have demonstrated the order-of-magnitude lowering of the receiver noise temperature, as measured in several laboratories at frequencies from 1 THz to 2.5 THz, which had been anticipated. HEBs have also been part of the history of these ISSTT symposia since the very first one, although one won't find an HEB session or even HEB mentioned in a title for a paper at the lst ISSTT: The present author "hid" a discussion on HEBs employing the semiconductor 2DEG medium in a paper entitled: "Integrated Tapered Slot Antenna Arrays and Devices". The first talks on the superconductor version of the HEB appeared at the 4th ISSTT. Since the 5th ISSTT, there have been entire sessions devoted to HEB topics, typically two at each conference. Today, HEB receivers for up to 1.46 THz have been installed on radio telescopes, and are beginning to produce significant astronomical data in this frequency range which has not been well exploited for heterodyne measurements previously. HEB detectors now being developed will be launched on Herschel and flown in SOFIA, and it is appropriate to ask what their real potential is for future such systems; for example, how high frequencies will they realistically be used for, what are the anticipated actual requirements for LO power, etc. This talk will review the present status of the THz HEB heterodyne detector field, and attempt to make predictions for where it will go in the future. For brevity, the review will be organized around specific questions, to which I will give answers which obviously represent my own personal opinion. I hope at least some of the answers and comments will give rise to fruitful discussions.
Categories:
HEB Mixers
Year:
2003
Session:
1
Full-text:
Download a PDF of this paper.
Page Number(s):
1-10