| Records |
| Author |
Ferrari, S.; Kovalyuk, V.; Hartmann, W.; Vetter, A.; Kahl, O.; Lee, C.; Korneev, A.; Rockstuhl, C.; Gol'tsman, G.; Pernice, W. |
| Title |
Hot-spot relaxation time current dependence in niobium nitride waveguide-integrated superconducting nanowire single-photon detectors |
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Journal Article |
| Year |
2017 |
Publication |
Opt. Express |
Abbreviated Journal |
Opt. Express |
| Volume |
25 |
Issue |
8 |
Pages |
8739-8750 |
| Keywords |
SSPD, SNSPD, photon counting; Infrared; Quantum detectors; Integrated optics; Multiphoton processes; Photon statistics |
| Abstract |
We investigate how the bias current affects the hot-spot relaxation dynamics in niobium nitride. We use for this purpose a near-infrared pump-probe technique on a waveguide-integrated superconducting nanowire single-photon detector driven in the two-photon regime. We observe a strong increase in the picosecond relaxation time for higher bias currents. A minimum relaxation time of (22 +/- 1)ps is obtained when applying a bias current of 50% of the switching current at 1.7 K bath temperature. We also propose a practical approach to accurately estimate the photon detection regimes based on the reconstruction of the measured detector tomography at different bias currents and for different illumination conditions. |
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RPLAB @ kovalyuk @ |
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1118 |
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Siemsen, K. J.; Bernard, J. E.; Madej, A. A.; Marmet, L. |
| Title |
Absolute frequency measurement of a CO2/OsO4 stabilized laser at 28.8 THz |
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Journal Article |
| Year |
2001 |
Publication |
Applied Physics B: Lasers and Optics |
Abbreviated Journal |
Appl. Phys. B: Lasers and Optics |
| Volume |
72 |
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567-573 |
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HgCdTe detector |
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462 |
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Zhou, Y.D.; Becker, C. R.; Ashokan, R.; Selamet, Y.; Chang, Y.; Boreiko, R. T.; Betz, A. L.; Sivananthan, S. |
| Title |
Progress in far-infrared detection technology |
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Conference Article |
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2002 |
Publication |
Proc. SPIE |
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4795 |
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121-128 |
| Keywords |
HgCdTe/CdTe, detector |
| Abstract |
II-VI intrinsic very long wavelength infrared (VLWIR, λc~20 to 50 μm) materials, HgCdTe alloys as well as HgCdTe/CdTe superlattices, were grown by molecular beam epitaxy (MBE). The layers were characterized by means of X-ray diffraction, conventional Fourier transform infrared spectroscopy, Hall effect measurements and transmittance electron microscopy (TEM). Photoconductor devices were processed and their spectral response was also measured to demonstrate their applicability in the VLWIR region. |
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Longshore, R. E.; Sivananthan, S. |
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Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series |
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471 |
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InSb detectors technical data sheet |
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Miscellaneous |
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2003 |
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InSb, detector |
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476 |
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Лудков, Денис Николаевич |
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Терагерцовые смесители на горячих электронах из тонких сверхпроводниковых пленок NbN и NbTiN |
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Manuscript |
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2005 |
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М. МПГУ |
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HEB, detector, mixer |
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Ph.D. thesis |
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