|
Records |
Links |
|
Author |
Ryabchun, S.; Tong, C.-yu E.; Blundell, R.; Kimberk, R.; Gol’tsman, G. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Effect of microwave radiation on the stability of terahertz hot-electron bolometer mixers |
Type |
Conference Article |
|
Year |
2006 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
|
|
Volume |
6373 |
Issue |
|
Pages |
63730J (1 to 5) |
|
|
Keywords |
NbN HEB mixers, hot-electron bolometer mixers, stability, Allan variance, LO power fluctuations |
|
|
Abstract |
We report our studies of the effect of microwave radiation, with a frequency much lower than that corresponding to the energy gap of the superconductor, on the performance of the NbN hot-electron bolometer (HEB) mixer incorporated into a THz heterodyne receiver. It is shown that exposing the HEB mixer to microwave radiation does not result in a significant rise of the receiver noise temperature and degradation of the mixer conversion gain so long as the level of microwave power is small compared to the local oscillator drive. Hence the injection of a small, but controlled amount of microwave radiation enables active compensation of local oscillator power and coupling fluctuations which can significantly degrade the stability of HEB mixer receivers. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SPIE |
Place of Publication |
|
Editor |
Anwar, M.; DeMaria, A.J.; Shur, M.S. |
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
Terahertz Physics, Devices, and Systems |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
|
Serial |
1441 |
|
Permanent link to this record |
|
|
|
|
Author |
Hubers, H.-W.; Semenov, A.; Richter, H.; Schwarz, M.; Gunther, B.; Smirnov, K.; Gol’tsman, G.; Voronov, B. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Heterodyne receiver for 3-5 THz with hot-electron bolometer mixer |
Type |
Conference Article |
|
Year |
2004 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
|
|
Volume |
5498 |
Issue |
|
Pages |
579-586 |
|
|
Keywords |
NbN HEB mixers |
|
|
Abstract |
Heterodyne receivers for applications in astronomy and planetary research need quantum limited sensitivity. In instruments which are currently build for SOFIA and Herschel superconducting hot electron bolometers (HEB) will be used to achieve this goal at frequencies above 1.4 THz. The local oscillator and the mixer are the most critical components for a heterodyne receiver operating at 3-5 THz. The design and performance of an optically pumped THz gas laser optimized for this frequency band will be presented. In order to optimize the performance for this frequency hot electron bolometer mixers with different in-plane dimensions and logarithmic-spiral feed antennas have been investigated. Their noise temperatures and beam patterns were measured. Above 3 THz the best performance was achieved with a superconducting bridge of 2.0 x 0.2 μm2 incorporated in a logarithmic spiral antenna. The DSB noise temperatures were 2700 K, 4700 K and 6400 K at 3.1 THz, 4.3 THz and 5.2 THz, respectively. The results demonstrate that the NbN HEB is very well suited as a mixer for THz heterodyne receivers up to at least 5 THz. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SPIE |
Place of Publication |
|
Editor |
Zmuidzinas, J.; Holland, W.S.; Withington, S. |
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
Millimeter and Submillimeter Detectors for Astronomy II |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
|
Serial |
1483 |
|
Permanent link to this record |
|
|
|
|
Author |
Baubert, J.; Salez, M.; Delorme, Y.; Pons, P.; Goltsman, G.; Merkel, H.; Leconte, B. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Membrane-based HEB mixer for THz applications |
Type |
Conference Article |
|
Year |
2003 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
|
|
Volume |
5116 |
Issue |
|
Pages |
551-562 |
|
|
Keywords |
membrane NbN HEB mixers, heterodyne receiver, stress-less membrane, coupling efficiency, submillimeter-waves frequency, low-cost space applications |
|
|
Abstract |
We report in this paper a new concept for 2.7 THz superconducting Niobium nitride (NbN) Hot-Electron Bolometer mixer (HEB). The membrane process was developped for space telecommnunication applications a few years ago and the HEB mixer concept is now considered as the best choice for low-noise submillimeter-wave frequency heterodyne receivers. The idea is then to join these two technologies. The novel fabrication scheme is to fabricate a NbN HEB mixer on a 1 μm thick stress-less Si3N4/SiO2 membrane. This seems to present numerous improvements concerning : use at higher RF frequencies, power coupling efficiency, HEB mixer sensitivity, noise temperature, and space applications. This work is to be continued within the framework of an ESA TRP project, a 2.7 THz heterodyne camera with numerous applications including a SOFIA airborne receiver. This paper presents the whole fabrication process, the validation tests and preliminary results. Membrane-based HEB mixer theory is currently being investigated and further tests such as heterodyne and Fourier transform spectrometry measurement are planed shortly. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SPIE |
Place of Publication |
|
Editor |
Chiao, J.-C.; Varadan, V.K.; Cané, C. |
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
Smart Sensors, Actuators, and MEMS |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
|
Serial |
1520 |
|
Permanent link to this record |
|
|
|
|
Author |
Cherednichenko, S.; Khosropanah, P.; Adam, A.; Merkel, H. F.; Kollberg, E. L.; Loudkov, D.; Gol'tsman, G. N.; Voronov, B. M.; Richter, H.; Huebers, H.-W. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
1.4- to 1.7-THz NbN hot-electron bolometer mixer for the Herschel space observatory |
Type |
Conference Article |
|
Year |
2003 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
|
|
Volume |
4855 |
Issue |
|
Pages |
361-370 |
|
|
Keywords |
NbN HEB mixers |
|
|
Abstract |
NbN hot- electron bolometer mixers have reached the level of 10hv/k in terms of the input noise temperature with the noise bandwidth of 4-6 GHz from subMM band up to 2.5 THz. In this paper we discuss the major characteristics of this kind of receiver, i.e. the gain and the noise bandwidth, the noise temperature in a wide RF band, bias regimes and optimisation of RF coupling to the quasioptical mixer. We present the status of the development of the mixer for Band 6 Low for Herschel Telescope. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SPIE |
Place of Publication |
|
Editor |
Phillips, T.G.; Zmuidzinas, J. |
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
Millimeter and Submillimeter Detectors for Astronomy |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
|
Serial |
1521 |
|
Permanent link to this record |
|
|
|
|
Author |
Huebers, H.-W.; Semenov, A.; Schubert, J.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M.; Krabbe, A.; Roeser, H.-P. |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
NbN hot-electron bolometer as THz mixer for SOFIA |
Type |
Conference Article |
|
Year |
2000 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
|
|
Volume |
4014 |
Issue |
|
Pages |
195-202 |
|
|
Keywords |
NbN HEB mixers, airborne, stratospheric observatory, SOFIA |
|
|
Abstract |
Heterodyne receivers for applications in astronomy need quantum limited sensitivity. We have investigated phonon- cooled NbN hot electron bolometric mixers in the frequency range from 0.7 THz to 5.2 THz. The devices were 3.5 nm thin films with an in-plane dimension of 1.7 X 0.2 micrometers 2 integrated in a complementary logarithmic spiral antenna. The best measured DSB receiver noise temperatures are 1300 K (0.7 THz), 2000 K (1.4 THz), 2100 K (1.6 THz), 2600 K (2.5 THz), 4000 K (3.1 THz), 5600 K (4.3 THz), and 8800 K (5.2 THz). The sensitivity fluctuation, the long term stability, and the antenna pattern were measured. The results demonstrate that this mixer is very well suited for GREAT, the German heterodyne receiver for SOFIA. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SPIE |
Place of Publication |
|
Editor |
Melugin, R.K.; Roeser, H.-P. |
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
Airborne Telescope Systems |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
|
Serial |
1554 |
|
Permanent link to this record |