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Progress on background-limited membrane-isolated TES bolometers for far-IR/submillimeter spectroscopy

Show simple item record Kenyon, M. Day, P. K. Bradford, C. M. Bock, J. J. Leduc, H. G. 2007-02-12T23:15:21Z 2007-02-12T23:15:21Z 2006-05-29
dc.identifier.citation SPIE Astronomical Telescopes and Instrumentation, Orlando, Florida, May 24 - 31, 2006. en
dc.identifier.clearanceno 06-1473
dc.description.abstract To determine the lowest attainable phonon noise equivalent power (NEP) for membrane-isolation bolometers, we fabricated and measured the thermal conductance of suspended Si3N4 beams with different geometries via a noise thermometry technique. We measured beam cross-sectional areas ranging from 0.35 x 0.5 µm² to 135 x 1.0 µm² and beam lengths ranging from 700 µm to 8300 µm. The measurements directly imply that membrane-isolation bolometers are capable of reaching a phonon noise equivalent power (NEP) of 4 x 10ˉ²ºW/Hz¹/Ò . This NEP is adequate for the Background-Limited Infrarcd-Submillimctcr Spectrograph (BLISS) proposed for the Japanese SPICA observatory, and adequate for NASA's SAFIR observatory, a 10-meter, 4 K telescope to be deployed at L2. Further, we measured the heat capacity of a suspended Si<base>3N<base>4 membrane and show how this result implies that one can make membrane-isolation bolometers with a response time which is fast enough for BLISS. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 3270756 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 transition-edge sensor en
dc.subject far-IR spectrometer en
dc.subject submillimeter spectrometer en
dc.subject Si3N4 thermal transport en
dc.title Progress on background-limited membrane-isolated TES bolometers for far-IR/submillimeter spectroscopy en
dc.type Preprint en

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