Records |
Author |
Gershenzon, E. M.; Orlov, L. A.; Ptitsina, N. G. |
Title |
Absorption spectra in electron transitions between excited states of impurities in germanium |
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Journal Article |
Year |
1975 |
Publication |
JETP Lett. |
Abbreviated Journal |
JETP Lett. |
Volume |
22 |
Issue |
4 |
Pages |
95-97 |
Keywords |
Ge, impurities, excited states, absorption spectra |
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1773 |
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Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P. |
Title |
THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites |
Type |
Journal Article |
Year |
2020 |
Publication |
Polymers (Basel) |
Abbreviated Journal |
Polymers (Basel) |
Volume |
12 |
Issue |
12 |
Pages |
3037 (1 to 14) |
Keywords |
THz spectroscopy; nanocomposites, percolation threshold, time-domain spectroscopy, time-domain spectrometer, TDS |
Abstract |
Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of the fillers inside the polymer matrix. The theory herein reveals that a particular effect connected with the homogeneity of a composite manifests itself in the terahertz range. Transmission time-domain terahertz spectroscopy was applied to the investigation of nanocomposites obtained by co-extrusion of PLA polymer with additions of graphene nanoplatelets and multi-walled carbon nanotubes. The THz peak of permittivity's imaginary part predicted by the applied model was experimentally shown for GNP-containing composites both below and above the percolation threshold. The physical nature of the peak was explained by the impact on filler particles excluded from the percolation network due to the peculiarities of filler distribution. Terahertz spectroscopy as a versatile instrument of filler distribution diagnostics is discussed. |
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Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland |
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English |
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2073-4360 |
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PMID:33353036; PMCID:PMC7767186 |
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1780 |
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Author |
Gershenzon, E. M.; Goltsman, G. N.; Ptitsyna, N. G. |
Title |
Investigation of excited donor states in GaAs |
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Journal Article |
Year |
1974 |
Publication |
Sov. Phys. Semicond. |
Abbreviated Journal |
Sov. Phys. Semicond. |
Volume |
7 |
Issue |
10 |
Pages |
1248-1250 |
Keywords |
GaAs, excited donor states |
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Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa |
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1733 |
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Steudle, Gesine A.; Schietinger, Stefan; Höckel, David; Dorenbos, Sander N.; Zadeh, Iman E.; Zwiller, Valery; Benson, Oliver |
Title |
Measuring the quantum nature of light with a single source and a single detector |
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Journal Article |
Year |
2012 |
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Phys. Rev. A |
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86 |
Issue |
5 |
Pages |
053814 |
Keywords |
SSPD, SNSPD, saturation count rates, dead time, dynamic range |
Abstract |
An elementary experiment in optics consists of a light source and a detector. Yet, if the source generates nonclassical correlations such an experiment is capable of unambiguously demonstrating the quantum nature of light. We realized such an experiment with a defect center in diamond and a superconducting detector. Previous experiments relied on more complex setups, such as the Hanbury Brown and Twiss configuration, where a beam splitter directs light to two photodetectors, creating the false impression that the beam splitter is a fundamentally required element. As an additional benefit, our results provide a simplification of the widely used photon-correlation techniques. |
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American Physical Society |
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1089 |
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Author |
Stellari, Franco; Song, Peilin |
Title |
Testing of ultra low voltage CMOS microprocessors using the superconducting single-photon detector (SSPD) |
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Conference Article |
Year |
2005 |
Publication |
Proc. 12th IPFA |
Abbreviated Journal |
Proc. 12th IPFA |
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Pages |
2 |
Keywords |
SSPD, CMOS testing |
Abstract |
In F. Stellari and P. Song (2004) the authors have shown a comparison among different detectors used for diagnosing integrated circuits (ICs) by means of the PICA method. In their experiments they used two versions of the SSPD detector (p-SSPD is a prototype version, while c-SSPD is the first commercially available generation of the detector as presented in W. K. Lo et al. (2002), as well as the imaging detector (S-25 photo-multiplier tube (PMT) as discussed in W. G. McMullan (1987)) used in the conventional PICA technique. A microprocessor chip fabricated in a 0.13 μm 1.2 V technology is used to show that c-SSPD provides a significant reduction in acquisition time for the collection of optical waveforms from chips running at very low. In this paper, the authors summarize the main results. |
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IEEE |
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0-7803-9301-5 |
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1055 |
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