摘要We report the terahertz direct detection characteristics of a spiral antenna coupled NbN superconducting hot-electron bolometer (HEB) at a bath temperature of 4.2 K. Thermal conductance determined from resistance transition curves with different bias currents is found to be 3×10−7 W/K. The device shows a read-out circuit limited noise equivalent power (NEP) of 4.5×10−12 W/Hz1/2 at 4.2 K with a home-made transimpedance amplifier operating at room temperature.
Abstract：We report the terahertz direct detection characteristics of a spiral antenna coupled NbN superconducting hot-electron bolometer (HEB) at a bath temperature of 4.2 K. Thermal conductance determined from resistance transition curves with different bias currents is found to be 3×10−7 W/K. The device shows a read-out circuit limited noise equivalent power (NEP) of 4.5×10−12 W/Hz1/2 at 4.2 K with a home-made transimpedance amplifier operating at room temperature.
[1] Wei J, Olaya D, Karasik B, Pereverzev S, Sergeev A and Hershenson M 2008 Nature Nanotechnology 3 496
[2] Richards P L 1994 J. Appl. Phys. 76 1
[3] Luukanena A and Pekola J P 2003 Appl. Phys. Lett. 82 3970
[4] Santavicca D F, Reese M O, True A B, Schmuttenmaer C A and Prober D E 2007 IEEE Trans. Appl. Superconduct. 17 412
[5] Luukanen A, Grossman E, Miller A, Helisto P, Penttila J, Sipola H and Seppa H 2006 IEEE Trans. Microwave Wireless Compon. Lett. 16 464
[6] Cibella A, Leoni R, Torrioli G, Gastellano M G, Coppa A and Mattioli F 2008 J. Low Temp. Phys. 151 979
[7] Specifications are from the website of Insight Prodoct Co. (Newton, MA) http://www.insight-product.com/detect3.htm
[8] Zhang W, Li N, Jiang L, Ren Y, Yao Q J, Lin Z H and Shi S C 2007 Proc. SPIE 6840 684007
[9] Dyson J, 1959 IEEE Trans. Antennas Propag. 13 181
[10] Ekstron H, Karasik B S, Kollberg E L and Yngvesson K S 1995 IEEE Trans. Microwave Their. Technol. 43 938
[11] Barends R, Hajenius M, Gao J R and Klapwijk T M 2005 Appl. Phys. Lett. 97 263506
[12] Hajenius M, Barends R, Gao J R, Klapwijk T M, Baselsman J J A, Baryshev A, Voronov B and Goltsman G 2005 IEEE Trans. Appl. Superconduct. 15 495
[13] Santavicca D F, Annunziata A J, Reese M O, Frunzio L and Probe D E 2007 Superconduct. Sci. Technol. 20 S398
2011, Vol. 28 
