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Browsing Articole din publicaţii internaţionale by Subject "Kramers–Kronig relations"

Browsing Articole din publicaţii internaţionale by Subject "Kramers–Kronig relations"

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  • The band structure of birefractive CdGa2S4 crystals 
    STAMOV, I. G.; SYRBU, N. N.; PARVAN, V. I.; ZALAMAI, V. V.; TIGINYANU, I. M. (Elservier, 2013)
    In this paper, we report on the spectral dependence of Δn=no−ne for CdGa2S4 single crystals for shorter and longer wavelengths than the isotropic wavelength λ0=485.7nm (300K). It was established that Δn is positive at λ>λ0 ...
  • Energetic band structure of Zn3P2 crystals 
    STAMOV, I. G.; SYRBU, N. N.; DOROGAN, A. V. (Elservier, 2013)
    Optical functions n, k, ε1, ε2 and d2ε2/dE2 have been determined from experimental reflection spectra in the region of 1–10eV. The revealed electronic transitions are localized in the Brillouin zone. The magnitude of valence ...
  • 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 ...
  • Optical spectra of TlGaS2 crystals 
    NEMERENCO, L.; SYRBU, N. N.; DOROGAN, V.; BEJAN, N. P.; ZALAMAI, V. V. (Elservier, 2016)
    Wavelength modulated reflection spectra measured at temperatures 14K and 300K in E||a and E||b polarizations for TlGaS2 crystals were investigated. The ground and excited states of excitons B2u in E||a polarization and B3u ...

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