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Optical Displacement Sensor (ODS), a LISA's inertial reference sensor candidate.

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dc.contributor.author Chiao, Meng P.
dc.contributor.author Dekens, Frank
dc.contributor.author Abramocivi, Alex
dc.date.accessioned 2006-06-13T16:34:24Z
dc.date.available 2006-06-13T16:34:24Z
dc.date.issued 2002-08-22
dc.identifier.citation SPIE Astronomical & Instrumentation; Low-frequency Gravitational-Wave Detectors, Waikoloa, Hawaii, August 22-28, 2002. en
dc.identifier.clearanceno SPIE Astronomical & Instrumentation; Low-frequency Gravitational-Wave Detectors, Waikoloa, Hawaii, August 22-28, 2002.
dc.identifier.clearanceno 02-1812
dc.identifier.uri http://hdl.handle.net/2014/39363
dc.description.abstract We propose here an optical displacement sensor (ODS) as a supplemental or backup sensor for the LISA inertial reference sensor concept. This simple ODS consists of a laser diode and a quad-cell photodiode (both commercially available). The inertial mass’ reflective surface directs the laser beam onto the quad-cell photodiode. Changes in the inertial mass’ position and orientation are then extracted from ratios of the differences and sums of the quad-cell photodiode outputs. A simpler proto-type using a 200 microns wide slit has demonstrated a resolution of 10 nm/√Hz at 1 mHz and 1 nm/√Hz above 5 mHz. The electronics noise was 1 nm/√Hz at and above 1 mHz with simple and off the shelf electronics components. Although this ODs’ current performance does not meet the LISA’s system requirement’ of 1 nm/ at 1 mHz, we think that is achievable in the near future en
dc.description.sponsorship NASA/JPL en
dc.format.extent 2383414 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2002. en
dc.subject displacement sensor en
dc.subject low frequency measurements. en
dc.title Optical Displacement Sensor (ODS), a LISA's inertial reference sensor candidate. en
dc.type Preprint en


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