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  • Optical characterization of the new nanocomposite SBMA/Eu(TTA)3(Ph3PO)2 
    BORDIAN, Olga; VERLAN, Victor; CULEAC, Ion; IOVU, Mihail; ZUBAREVA, Vera; NISTOR, Iurie (SPIE, Society of Photo-Optical Instrumentation Engineers, 2015)
    We describe a new nanocomposite material based on the copolymer of styrene with butyl methacrylate (1:1) (SBMA), and coordinating compound of Europium(III) Eu(TTA)3(Ph3PO)2. The SBMA/Eu(TTA)3(Ph3PO)2 nanocomposite was ...
  • Optical constants of ZnSxSe1–x thin films calculated from transmission spectra 
    POPA, Mihail; TIGINYANU, Ion; URSAKI, Veacheslav (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2017)
    We report the results of calculations of some optical parameters of ZnSxSe1–x thin films based on measured transmission spectra by using the Swanepoel’s method, the Wemple– DiDomenico single-oscillator model, and the ...
  • Optical electronic computer systems design in stationary and dynamic modes 
    PERJU, Veacheslav L. (SPIE, 2001)
    The theory of designing the optical-electronic image processing computer systems has been presented. A model of parallel image processing system has been considered, that is based on the principle of function decomposition. ...
  • Optical improved structure of polycrystalline silicon-based thin-film solar cell 
    BUDIANU, Elena; PURICA, Munizer; MANEA, Elena; RUSU, Emil; GAVRILA, Raluca; DANILA, Mihai (Elservier, 2002)
    This paper presents an n-i-p type solar cell structure consisting of polycrystalline silicon thin film as an absorber of incident radiation and a ZnO thin film for optical improvement. The characteristics of Si layers ...
  • Optical losses characterization in waveguides through the photodeflection method 
    BERTOLOTTI, Mario; LIAKHOU, G. L.; VOTI, Roberto Li; MATERA, A.; SIBILIA, Concita; VALENTINO, M. (SPIE, 1997)
    The photodeflection method is able to characterize the propagation losses in optical waveguides. The theory of the transverse configurations in air and in situ is reviewed. The procedure to determine the propagation loss ...
  • Optical mixing in THz Schottky diodes 
    SCHOENHERR, D.; COJOCARI, O.; SYDLO, C.; GOEBEL, T.; FEIGINOV, M.; HARTNAGEL, H. L.; MEISSNER, P. (IEEE, 2008)
    This paper presents the effect of optical mixing in zero-bias InGaAs Schottky detectors at THz frequencies. The excitation of ultrafast carriers by illumination with two 1.5 mum laser beams is verified. This proves the ...
  • Optical Modulation Spectra of CdP2 Crystals and Ni-CdP2 Schottky Barriers 
    RADAUTSAN, S. I.; SYRBU, N. N.; KIOSEV, V. K. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1974)
    The relative photosensitivity spectra of Ni-CdP2 Schottky barriers have been investigated experimentally; in these spectra a structure consisting of nine maxima has been observed in the intrinsic absorption region. The ...
  • Optical monitoring of solid electrolites formation in quaternary alloys Ag: AsS3-GeS4 and their analysis 
    TSIULYANU, D.; CIOBANU, M.; STRATAN, I. (Institutul de Fizică Aplicată, AŞM, 2018)
    Quaternary solid electrolytes based on Ag photodoped glasses have been fabricated and studied. The process of fabrication consists of: the synthesize of glassy materials followed by their structural and electrical ...
  • Optical Phonons and Chemical Bonding in TlSbS2, TlSbSe2, and Tl3SbS3 Crystals 
    SYRBU, N. N.; KRASOVSKY, V. T.; GRINCHESHEN, I. N. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1993)
    The optical phonons at k = 0 of TlSbS2, TlSbSe2, and Tl3SbS3 have been investigated by infrared reflectivity measurements from 50 to 4000 cm−1 at 300 K. The factor group analysis of vibrational modes of TlSbS2 and Tl3SbS3 ...
  • Optical Phonons and Chemical Bonding in TlSbS2, TlSbSe2, and Tl3SbS3 Crystals 
    STAMOV, I. G.; SYRBU, N. N.; ZALAMAI, V. V. (Elservier, 2014)
    The emission lines of bound and free excitons and their phonon replicas were observed in the luminescence spectra of ZnP2-D48 crystals doped with Mn, Sn, Cd and Sb measured at 10K. The emission lines are described by the ...
  • Optical properties and birefringence of ZnIn2S4 layered crystals 
    STAMOV, I. G.; ZALAMAI, V. V.; SYRBU, N. N.; TIRON, A. V. (Elsevier, 2020)
    Interference spectra of layered ZnIn2S4 crystals were investigated for samples of different thicknesses (7.5–900 μm). Spectral dependences of refractive indices (na and nb) for light waves with different polarizations were ...
  • Optical properties and energetic band structure of Tl3AsS3, Tl3AsSe3 and Tl3SbS3 crystals 
    SYRBU, N. N.; KRASOVSKY, V. T.; GITSU, D. V.; GRINCHESCHEN, I. N. (Elservier, 1995)
    Fundamental absorption edge spectra and reflectivity spectra of TlaAsS3, T13AsSe3 and TlaSbS 3 crystals have been investigated in the range 1-6 eV at 300 and 77 K. Polarization dependences of three excitonic series ground ...
  • Optical Properties and Energy Band Structure of Zn3P2and Cd3P2 Crystals 
    SOBOLEV, V. V.; SYRBU, N. N. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1974)
    Edge absorption, photoconductivity, and reflectivity spectra are investigated of Zn3P2 crystals in the range from 1 to 12.5 eV and reflectivity spectra of Cd3P2 crystals in the range from 1 to 12.5 eV. The Eg value of Zn3P2 ...
  • Optical Properties of Biexcitons in ZnSe/Zn1−xMnxSe Quantum Wells 
    BOBRYSHEVA, A. I.; RUSSU, S. S. (John Wiley & Sons, Inc., 1990)
    It is shown that in ZnSe/(Zn, Mn)Sequantum wells six biexcitonic states can exist. The group-theoretical classification of these states is performed. The probabilities of biexciton two-photon absorption, hyper-Raman ...
  • Optical properties of Cu2ZnGeSe4 
    GUC, M.; BODNAR, I.; DERMENJI, L.; LEVCENKO, S.; ARUSHANOV, E.; SYRBU, N. N. (Institutul de Fizică Aplicată al AŞM, 2012)
    Cu2ZnGeSe4 (CZGSe) is interesting and promising p-type semiconductor materials for optoelectronics applications and solar cells. In this paper we present reflectivity spectra measured at 300 K in the photon energy range ...
  • Optical properties of CuGa3Se 5 single crystals 
    LEVCENKO, S.; SYRBU, N. N.; NATEPROV, A.; ARUSHANOV, E.; MERINO, J. M.; LEÓN, M. (IOP Publishing, 2006)
    Single crystals of CuGa3Se5 have been grown by chemical vapour transport. Optical properties of CuGa3Se5 have been investigated in the temperature range between 10 K and room temperature 300 K. The temperature dependence ...
  • Optical properties of monocrystalline CuIn5Se8 
    LEVCENKO, S.; SYRBU, N. N.; ARUSHANOV, E.; TEZLEVAN, V.; FERNÁNDEZ-RUIZ, R.; MERINO, J. M.; LEÓN, M. (American Institute of Physics, 2006)
    Single crystals of CuIn5Se8 have been grown by chemical vapor transport. The crystals show a deviation from stoichiometry. The temperature dependence of their optical absorption spectra was investigated in the temperature ...
  • Optical properties of significant acousto-optic crystals 
    MUSINSCHI, V.; CARAMAN, M.; MUSINSCHI, C.; SYRBU, N. (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2009)
    The interest in the study of the optical properties of TeO2 and PbMoO4 crystals is determined not only by the fundamental physical mechanisms present in these materials but also by a wide spectrum of possible applications ...
  • Optical properties of Sm-doped ceria nanostructured films grown by electrodeposition at low temperature 
    URSAKI, V. V.; LAIR, V.; ŻIVKOVIĆ, L.; CASSIR, M.; RINGUEDÉ, A.; LUPAN, O. (ELSEVIER, 2012)
    Nanostructured undoped and samarium doped ceria thin nanocolumnar films are electrodeposited onto (FTO) glass substrates at low-temperature (30°C) with a subsequent thermal annealing at 600°C for 1h. Films are obtained ...
  • Optical properties of Tl3SbS3 acousto-optic crystals 
    SYRBU, N. N.; DOROGAN, V. V.; NEMERENCO, L. L.; VIERU, T. S. (American Institute of Physics, 2006)
    Optical properties of acousto-optical material Tl3SbS3 were investigated at the fundamental absorption edge. The basic (n=1) and excited (n=2, 3) exciton states were obtained from the λ-modulated reflection spectra for ...

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