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Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation |
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Journal Article |
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1990 |
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Solid State Communications |
Abbreviated Journal |
Solid State Communications |
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76 |
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4 |
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493-497 |
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Keywords |
YBCO HTS detectors |
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Abstract |
The ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter to near infrared. With the rise of radiation frequency the Josephson detection at the grain boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. Electron-phonon relaxation time τeph is determined by direct measurements and analyses quasistationary electron heating. Temperature dependence of τeph at T ≤ 40 K was found to be τeph ∼ T−1. The results show that detectors with the response time of few picoseconds at nitrogen temperature are attainable. |
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0038-1098 |
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1685 |
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Bespalov, A.V.; Gol'tsman, G.N.; Semenov, A.D.; Renk, K.F. |
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Determination of the far-infrared emission characteristic of a cyclotron p-germanium laser by use of a superconducting Nb detector |
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Journal Article |
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Year |
1991 |
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Solid State Communications |
Abbreviated Journal |
Solid State Communications |
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Volume |
80 |
Issue |
7 |
Pages |
503-506 |
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Keywords |
Nb detector, applications |
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We studied the far-infrared emission characteristics of a cyclotron p-germanium laser using a broad-band superconducting Nb film detector. For magnetic fields between ∼25 kOe and ∼50 kOe, emission in a frequency range from ∼50 cm-1 to ∼100 cm-1 with maximum intensity around 90 cm-1 was obtained. We determined, for fixed magnetic fields, electric field dependences of the emission intensity taking into account that the total electric field is a sum of the applied and the Hall electric field. An analysis of the emission intensity characteristic gives evidence that transitions between the two lowest Landau levels of light holes are responsible for the laser action. |
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0038-1098 |
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1677 |
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Kahl, O.; Ferrari, S.; Kovalyuk, V.; Vetter, A.; Lewes-Malandrakis, G.; Nebel, C.; Korneev, A.; Goltsman, G.; Pernice, W. |
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Spectrally multiplexed single-photon detection with hybrid superconducting nanophotonic circuits |
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Journal Article |
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2017 |
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Optica |
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Optica |
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4 |
Issue |
5 |
Pages |
557-562 |
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Waveguide integrated superconducting single-photon detectors; Nanophotonics and photonic crystals; Quantum detectors; Spectrometers and spectroscopic instrumentation |
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The detection of individual photons by superconducting nanowire single-photon detectors is an inherently binary mechanism, revealing either their absence or presence while concealing their spectral information. For multicolor imaging techniques, such as single-photon spectroscopy, fluorescence resonance energy transfer microscopy, and fluorescence correlation spectroscopy, wavelength discrimination is essential and mandates spectral separation prior to detection. Here, we adopt an approach borrowed from quantum photonic integration to realize a compact and scalable waveguide-integrated single-photon spectrometer capable of parallel detection on multiple wavelength channels, with temporal resolution below 50 ps and dark count rates below 10 Hz at 80% of the devices' critical current. We demonstrate multidetector devices for telecommunication and visible wavelengths, and showcase their performance by imaging silicon vacancy color centers in diamond nanoclusters. The fully integrated hybrid superconducting nanophotonic circuits enable simultaneous spectroscopy and lifetime mapping for correlative imaging and provide the ingredients for quantum wavelength-division multiplexing on a chip. |
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RPLAB @ kovalyuk @ |
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1119 |
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Siemsen, K. J.; Bernard, J. E.; Madej, A. A.; Marmet, L. |
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Absolute frequency measurement of a CO2/OsO4 stabilized laser at 28.8 THz |
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2001 |
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Applied Physics B: Lasers and Optics |
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Appl. Phys. B: Lasers and Optics |
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72 |
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567-573 |
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HgCdTe detector |
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462 |
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Arams, F.; Allen, C.; Peyton, B.; Sard, E. |
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Millimeter mixing and detection in bulk InSb |
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1966 |
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Proc. IEEE |
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54 |
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4 |
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612-622 |
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InSb, mixer, detector |
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219 |
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