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  • Excitability of lasers with integrated dispersive reflector 
    TRONCIU, V. Z.; WUNSCHE, Hans-Juergen; SCHNEIDER, Klaus R.; RADZIUNAS, Mindaugas (Society of Photo-Optical Instrumentation Engineers (SPIE), 2001)
    This paper is concerned with the phenomenon of excitability in semiconductor lasers consisting of a DFB section and a passive dispersive reflector (PDR). We assume that the PDR section contains a Bragg grating and/or a ...
  • Excitation and temperature tuned photoluminescence in HgGa2S4 single crystals 
    URSAKI, V. V.; RICCI, P. C.; TIGINYANU, I. M.; ANEDDA, A.; SYRBU, N. N.; TEZLEVAN, V. E. (ELSEVIER, 2002)
    Mercury thiogallate single crystals are shown to exhibit bright photoluminescence (PL) tunable in a wide spectral range from green to red when changing the excitation power density, wavelength and sample temperature. Taking ...
  • Exciton - phonon spectra and energy band structure of crystals 
    SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E.; STAMOV, I. G. (IOP Publishing, 1997)
    The excitonic reflectivity spectra and the wavelength derivative reflection spectra have been investigated. The n = 1, n = 2 and n = 3 states of the A, B and C exciton series are determined. The exciton binding energies ...
  • Exciton and phonon spectra of acoustooptic Tl3AsS3 crystals 
    GITSU, D. V.; SYRBU, N. N.; PRUNICH, P. I.; POPESKU, A. A. (Springer Nature Switzerland, 2001)
    The λ-modulated exciton reflection spectra of Tl3AsS3 crystals are investigated at 8 and 77 K, in which the ground (n=1) and excited (n=2, 3) exciton states are revealed. Taking into account the spatial dispersion, the ...
  • Exciton polariton spectra and carrier effective masses in ZnO single crystals 
    SYRBU, N. N.; TIGINYANU, I. M.; ZALAMAI, V. V.; URSAKI, V. V.; RUSU, E. V. (ELSEVIER, 2004)
    Photoreflectivity and photoluminescence spectra in the region of exciton resonance were measured in ZnO single crystals. A, B, and C exciton binding energies were determined from the energy position of the ground and excited ...
  • Exciton spectra and energy band structure of Cu2ZnSiSe4 
    GUC, M.; LEVCENKO, S.; DERMENJI, L.; GURIEVA, G.; SCHORR, S.; SYRBU, N. N.; ARUSHANOV, E. (Elservier, 2014)
    Exciton spectra are studied in Cu2ZnSiSe4 single crystals at 10 and 300K by means of reflection spectroscopy. The exciton parameters, dielectric constant and free carriers effective masses are deduced from experimental ...
  • Exciton spectra and energy band structure of CuAlSe2 crystals 
    SYRBU, N. N.; DOROGAN, A. V.; MASNIK, A.; URSAKI, V. V. (Academy of Sciences of Moldova, 2011)
    The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed. The crystal field and spin-orbit splitting of the balance ...
  • Exciton spectra and energy band structure of CuGaSe2 single crystals 
    LEVCHENKO, S.; SYRBU, N. N.; TEZLEVAN, V. E.; ARUSHANOV, E.; MERINO, J. M.; LEÓN, M. (IOP Publishing, 2008)
    Photoreflectivity, wavelength modulation spectroscopy and photoluminescence measurements of CuGaSe2 are used to determine the exciton and band parameters as well as the energy band structure of CuGaSe2 at photon energies ...
  • Exciton spectra of CuInSe2 crystals 
    NEMERENCO, L. (Academy of Sciences of Moldova, 2005)
    The excitonic reflectivity spectra and the wave-length derivative reflection spectra have been investigated for CuInSe2 crystals. The n =1, n =2 and n = 3 states of A, B and C exciton series are revealed and the contours ...
  • Exciton spectra, valence band splitting, and energy band structure of CuGaxIn1−xS2 and CuGaxIn1−xSe2 crystals 
    SYRBU, N. N.; TIGINYANU, I. M.; NEMERENCO, L. L.; URSAKI, V. V.; TEZLEVAN, V. E.; ZALAMAI, V. V. (ELSEVIER, 2005)
    Exciton spectra are studied in CuGaXIn1−XS2 solid solutions by means of photoreflectivity and wavelength modulation spectroscopy at liquid nitrogen temperature. The exciton parameters, dielectric constants, and free carrier ...
  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    SYRBU, N. N.; NYARI, T.; BOGDANASH, M.; TEZLEVAN, V. E. (IEEE, 1999)
    In the present paper the excitonic reflectivity and the wavelength derivative reflection (WDR) study of CuGa/sub x/In/sub x-1/Se/sub 2/ solid solutions are presented. The states n=1, n=2 and n=3 of A, B, C exciton series ...
  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    RADAUTSAN, S. I.; SYRBU, N. N.; CRETU, R. V.; TEZLEVAN, V. E. (IEEE, 1997)
    In this work, the wavelength derivative reflection (WDR) spectra of CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals have been investigated in the region of A, B and C series. The n=1, n=2 and n=3 states are determined and contours ...
  • Excitonic and band parameters in SnSe crystals 
    SYRBU, N. N.; ZALAMAI, V. V. (Elsevier, 2020)
    In the present work, absorption, reflection and wavelength modulated transmission spectra in wide temperature range 300–10 K in regions of the band gap minimum and of transitions to the excitonic band were studied.
  • Excitonic and electronic transitions in Me–Sb2Se3 structures 
    SYRBU, Nicolae N.; ZALAMAI, Victor V.; STAMOV, Ivan G.; BERIL, Stepan I. (Beilstein Institut, 2020)
    The optical anisotropy of the Sb2Se3 crystals was investigated at 300 and 11 K. Excitonic features of four excitons (A, B, C, and D) were observed in the optical spectra of the Sb2Se3 single crystals and in the photoelectric ...
  • Excitonic Polaritons in ZnAs2 
    SYRBU, Nicolae; STAMOV, Ivan; DOROGAN, Andrei; NEMERENCO, Lucretia (IOP Publishing, 2006)
    The allowed exciton transitions n=1,2,3 were revealed in the reflection spectra of ZnAs2 monocrystals at 10 K. Transverse and longitudinal exciton energies, longitudinal splitting value, translation and reduced exciton ...
  • Excitonic polaritons in ZnAs2 
    ZALAMAI, V. V.; SYRBU, N. N.; STAMOV, I. G. (Institutul de Fizică Aplicată, 2016)
    Spectral dependences of normal and anomaly dispersions of refractive index were calculated from interferential reflection and transmission spectra. It was shown, that A and B excitonic series were due to by hole V1 and ...
  • Excitonic polaritons of zinc diarsenide single crystals 
    SYRBU, N. N.; STAMOV, I. G.; ZALAMAI, V. V.; DOROGAN, A. (Elservier, 2017)
    Excitonic polaritons of ZnAs2 single crystals had been investigated. Parameters of singlet excitons with Г2¯(z) symmetry and orthoexcitons 2Г1¯(y)+Г2¯(x) had been determined. Spectral dependencies of ordinary and extraordinary ...
  • Excitonic resonance spectra in QW and QD In0.3Ga0.7As/GaAs hetrostructures 
    DOROGAN, A.; DOROGAN, V.; MEREUTA, A.; SYRBU, A.; SYRBU, N.; VIERU, T.; URSAKI, V.; ZALAMAI, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    The measurement of optical reflection and transmittance spectra had been carried out using MДР-2, JASCO-670 and СДЛ-1 spectrometers at 10K and 300K for S- and P-polarizations and different light angles incident on the ...
  • Excitonic spectra and band structure of CdGa2Se4 birefractive crystals 
    SYRBU, N. N.; STAMOV, I. G.; PARVAN, V. I.; ZALAMAI, V. V.; TIGINYANU, I. M. (Elservier, 2013)
    We report on the intersection of spectral dependences of refractive indices no and ne at the wavelengths 546nm (λ0) and 450nm (λ01) in CdGa2Se4 single crystals. The value of difference Δn=ne−no is equal to zero at the ...
  • Excitonic spectra and birefringence in TlGaS2 single crystals 
    TIRON, A. V. (Institutul de Fizică Aplicată, AŞM, 2018)
    TlGaS2 crystals belong to triple thallium chalcogenides with well-pronounced lamellar structure. Due to specificity of crystal structure these crystals have a strong anisotropy of physical properties. The authors report ...

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