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Author Gershenzon, E. M.; Orlov, L. A.; Ptitsina, N. G. url  openurl
  Title Absorption spectra in electron transitions between excited states of impurities in germanium Type Journal Article
  Year 1975 Publication JETP Lett. Abbreviated Journal (up) JETP Lett.  
  Volume 22 Issue 4 Pages 95-97  
  Keywords Ge, impurities, excited states, absorption spectra  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1773  
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Author Manus, M. K. Mc; Kash, J. A.; Steen, S. E.; Polonsky, S.; Tsang, J.C.; Knebel, D. R.; Huott, W. doi  openurl
  Title PICA: Backside failure analysis of CMOS circuits using picosecond imaging circuit analysis Type Journal Article
  Year 2000 Publication Microelectronics Reliability Abbreviated Journal (up) Microelectronics Reliability  
  Volume 40 Issue Pages 1353-1358  
  Keywords SSPD, CMOS testing  
  Abstract Normal operation of complementary metal-oxide semiconductor (CMOS) devices entails the emission of picosecond pulses of light, which can be used to diagnose circuit problems. The pulses that are observed from submicron sized field effect transistors (FETs) are synchronous with logic state switching. Picosecond Imaging Circuit Analysis (PICA), a new optical imaging technique combining imaging with timing, spatially resolves individual devices at the 0.5 micron level and switching events on a 10 picosecond timescale. PICA is used here for the diagnostics of failures on two VLSI microprocessors.  
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  Notes Approved no  
  Call Number Serial 1054  
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Author Miller, Aaron J.; Lita, Adriana E.; Calkins, Brice; Vayshenker, Igor; Gruber, Steven M.; Nam, Sae Woo openurl 
  Title Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent Type Journal Article
  Year 2011 Publication Optics Express Abbreviated Journal (up) Opt. Express  
  Volume 19 Issue 10 Pages 9102-9110  
  Keywords TES  
  Abstract We present a compact packaging technique for coupling light from a single-mode telecommunication fiber to cryogenic single-photon sensitive devices. Our single-photon detectors are superconducting transition-edge sensors (TESs) with a collection area only a factor of a few larger than the area of the fiber core which presents significant challenges to low-loss fiber-to-detector coupling. The coupling method presented here has low loss, cryogenic compatibility, easy and reproducible assembly and low component cost. The system efficiency of the packaged single-photon counting detectors is verified by the “triplet method” of power-source calibration along with the “multiple attenuator” method that produces a calibrated single-photon flux. These calibration techniques, when used in combination with through-wafer imaging and fiber back-reflection measurements, give us confidence that we have achieved coupling losses below 1 % for all devices packaged according to the self-alignment method presented in this paper.  
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  Notes Approved no  
  Call Number RPLAB @ gujma @ Serial 666  
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Author Gershenzon, E. M.; Goltsman, G. N.; Orlov, L. url  openurl
  Title Investigation of population and ionization of donor excited states in Ge Type Conference Article
  Year 1976 Publication Physics of Semiconductors Abbreviated Journal (up) Physics of Semiconductors  
  Volume Issue Pages 631-634  
  Keywords Ge, donor excited states  
  Abstract  
  Address Amsterdam  
  Corporate Author Thesis  
  Publisher North-Holland Publishing Co. Place of Publication Editor  
  Language Summary Language Original Title  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1732  
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Author Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P. url  doi
openurl 
  Title THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites Type Journal Article
  Year 2020 Publication Polymers (Basel) Abbreviated Journal (up) 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.  
  Address Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland  
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  Language English Summary Language Original Title  
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  ISSN 2073-4360 ISBN Medium  
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  Notes PMID:33353036; PMCID:PMC7767186 Approved no  
  Call Number Serial 1780  
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