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2D array of cold-electron nanobolometers with double polarised cross-dipole antennas.
| Content Provider | Europe PMC |
|---|---|
| Author | Kuzmin, Leonid S |
| Copyright Year | 2012 |
| Abstract | A novel concept of the two-dimensional (2D) array of cold-electron nanobolometers (CEB) with double polarised cross-dipole antennas is proposed for ultrasensitive multimode measurements. This concept provides a unique opportunity to simultaneously measure both components of an RF signal and to avoid complicated combinations of two schemes for each polarisation. The optimal concept of the CEB includes a superconductor-insulator-normal tunnel junction and an SN Andreev contact, which provides better performance. This concept allows for better matching with the junction gate field-effect transistor (JFET) readout, suppresses charging noise related to the Coulomb blockade due to the small area of tunnel junctions and decreases the volume of a normal absorber for further improvement of the noise performance. The reliability of a 2D array is considerably increased due to the parallel and series connections of many CEBs.Estimations of the CEB noise with JFET readout give an opportunity to realise a noise equivalent power (NEP) that is less than photon noise, specifically, NEP = 4 10−19 W/Hz1/2 at 7 THz for an optical power load of 0.02 fW. |
| ISSN | 19317573 |
| Journal | Nanoscale Research Letters |
| Volume Number | 7 |
| PubMed Central reference number | PMC3583165 |
| Issue Number | 1 |
| PubMed reference number | 22512950 |
| e-ISSN | 1556276X |
| DOI | 10.1186/1556-276x-7-224 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2012-04-18 |
| Access Restriction | Open |
| Rights License | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright ©2012 Kuzmin; licensee Springer. |
| Subject Keyword | Cold-electron bolometer 2D array Focal plane antenna SIN tunnel junction Andreev contact JFET readout 85.25.Oj 85.25.Pb 74.50. + r |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Condensed Matter Physics Materials Science |