@inproceedings{4c704c996dce426bbb6ef1e24be1ffa3,
title = "Fabrication and photon detection experiments of Nb/Al and Ta/Al superconducting tunnel junctions",
abstract = "We report on fabrication and photon detection experiments of Nb/Al and Ta/Al superconducting tunnel junctions (STJs). 5-layer STJ thin-films were fabricated using UV photolithography, DC magnetron sputtering, reactive ion etching, and chemical vapor deposition techniques. STJs with 4 different sizes (20, 40, 60 and 80μm) were deposited on sapphire substrates and tested in a two stage adiabatic demagnetization refrigerator with an operating temperature ~ 50 mK. Photons from different light sources are injected into the junctions via an optical fiber in combination with a monochromator which can produce photons from 30 nm to 550 nm with 0.1 nm resolution. The junction is read out through a charge-sensitive preamplifier followed by a shaping stage. We have measured some performance indicators and quality factors of the junctions from resultant I-V curves.",
author = "Park, {Jang Hyun} and Park, {Young Sik} and Yoon, {Ho Seop} and Sungho Lee and Yonuk Chong and Lee, {Yong Ho} and Lee, {Sang Kil} and Lee, {Jeon Kook} and Yang, {Min Kyu} and Kim, {Dong Lak} and Kim, {Sug Whan}",
year = "2008",
doi = "10.1117/12.787727",
language = "English",
isbn = "9780819472311",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "High Energy, Optical, and Infrared Detectors for Astronomy III",
note = "High Energy, Optical, and Infrared Detectors for Astronomy III ; Conference date: 23-06-2008 Through 26-06-2008",
}