Hadfield, R.
, Dalgarno, P.
, O'Connor, J.
, Ramsay, E.
, Warburton, R.
, Gansen, E.
, Baek, B.
, Stevens, M.
, Mirin, R.
and Nam, S.
(2007),
Submicrometer photoresponse mapping of nanowire superconducting single-photon detectors, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32730
(Accessed April 25, 2024)
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Submicrometer photoresponse mapping of nanowire superconducting single-photon detectors
Published
Author(s)
Robert Hadfield, Paul A. Dalgarno, John A. O'Connor, Euan Ramsay, Richard Warburton, , , , ,
Abstract
We report on the photoresponse mapping of nanowire superconducting single-photon detectors using a focal spot significantly smaller than the device area (10X10 υ2). Using a confocal microscope configuration and solid immersion lens, we achieve a spot size of 320 nm full width at half maximum onto the device at 470 nm wavelength. We compare the response maps of two devices: The higher detection efficiency device gives a uniform response, whereas the lower detection efficiency device is limited by a single defect or constriction.Citation
Applied Physics Letters
Volume
91
Issue
241108
Pub Type
Journals
Download Paper
Keywords
nano-optics, single-photon detectors
Citation
Created December 12, 2007, Updated October 12, 2021