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Superconducting nanowire single-photon detector on dielectric optical films for visible and near infrared wavelengths.
- Source :
-
Superconductor Science & Technology . Aug2017, Vol. 30 Issue 8, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- The detection efficiency (DE) of superconducting nanowire single-photon detectors (SNSPDs) at 1550 nm has been significantly improved in the past decades as a result of evolution of the optical structure, the materials, and the fabrication process. We discuss the general optical design for a high-efficiency SNSPD based on dielectric optical films that can detect wavelengths from visible to near infrared regions. This structure shows close-to-unity absorption and good insensitivity to the fine wavelength and the incident angle. We demonstrate an SNSPD specifically fabricated for the detection of 1064 nm wavelength with a maximal system DE of 87.4% ± 3.7%. The DEs of the SNSPDs for visible and near infrared wavelengths are also summarized and compared with those of semiconducting detectors. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SUPERCONDUCTORS
*PHOTON detectors
*DIELECTRIC films
Subjects
Details
- Language :
- English
- ISSN :
- 09532048
- Volume :
- 30
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Superconductor Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 125106763
- Full Text :
- https://doi.org/10.1088/1361-6668/aa7495