JPL Technical Report Server

An untrasensitive hot-electron bolometer for low-background SMM applications

Show simple item record

dc.contributor.author Olayaa, David
dc.contributor.author Weia, Jian
dc.contributor.author Pereverzev, Sergei
dc.contributor.author Karasik, Boris S.
dc.contributor.author Kawamura, Jonathan H.
dc.contributor.author McGrath, William R.
dc.contributor.author Sergeev, Andrei V.
dc.contributor.author Gershenson, Michael E.
dc.date.accessioned 2008-02-19T20:04:58Z
dc.date.available 2008-02-19T20:04:58Z
dc.date.issued 2006-05-24
dc.identifier.citation SPIE Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, Orlando, Florida, May 24-31, 2006. en
dc.identifier.clearanceno SPIE Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, Orlando, Florida, May 24-31, 2006.
dc.identifier.clearanceno 06-2519
dc.identifier.uri http://hdl.handle.net/2014/40715
dc.description.abstract We are developing a hot-electron superconducting transition-edge sensor (TES) that is capable of counting THz photons and operates at T = 0.3K. The main driver for this work is moderate resolution spectroscopy (R ~ 1000) on the future space telescopes with cryogenically cooled (~ 4 K) mirrors. The detectors for these telescopes must be backgroundlimited with a noise equivalent power (NEP) ~ 10<superscript -19> -10<superscipt -20> W/Hz¹´² over the range v = 0.3-10 THz. Above about 1 THz, the background photon arrival rate is expected to be ~ 10-100 s-1, and photon counting detectors may be preferable to an integrating type. We fabricated superconducting Ti nanosensors with a volume of ~ 3x10ֿ³ μm³on planar Si substrate and have measured the thermal conductance G to the thermal bath. A very low G = 4x10<superscript -14> W/K, measured at 0.3 K, is due to the weak electron-phonon coupling in the material and the thermal isolation provided by superconducting Nb contacts. This low G corresponds to NEP(0.3K) = 3x10<superscript -19> W/Hz¹´². This Hot-Electron Direct Detector (HEDD) is expected to have a sufficient energy resolution for detecting individual photons with v > 0.3 THz at 0.3 K. With the sensor time constant of a few microseconds, the dynamic range is ~ 50 dB. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 301560 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. en
dc.subject bolometers en
dc.subject radiation detectors en
dc.subject submillimeter wave detectors en
dc.subject superconducting devices en
dc.subject transition edge sensor en
dc.title An untrasensitive hot-electron bolometer for low-background SMM applications en
dc.type Preprint en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search


Browse

My Account