Electronic spectral parameters and IR nonlinear optical features of novel Ag0.5Pb1.75GeS4 crystal

Electronic structure and optical properties of Cu2CdGeS4: DFT calculations and X-ray spectroscopy measurements

“…The energy scale of the XPS spectrometer was calibrated as reported in detail in Ref. [22]. An Al Ka source of X-ray radiation (E = 1486.6 eV) was used for excitation of the XPS spectra of the Cu 2 CdGeS 4 single crystal and they were recorded at a constant pass energy of 30 eV.…”

Laser operated piezoelectricity in Ag0.5Pb1.75GeS4 and Ag0.5Pb1.75GeS3Se crystals

“…The growth of the single crystals with compositions Ag 0.5 Pb 1.75 GeS 4 and Ag 0.5 Pb 1.75 GeS 3 Se up to 70 mm length and 10 mm diameter was reported in detail earlier [3,4]. The experimental set-up for measurements of the photoinduced piezoelectricity versus photoinduced pump energy density is similar to the described in Ref.…”

“…In the Ref. [3] it was reported novel quaternary chalcogenide Ag 0.5 Pb 1.75 GeS 4 and Ag 0.5 Pb 1.75 GeSe 4 crystals. These crystals possess non-centrosymmetric structure (space group I-43d) that indicates likely presence of effects described by third rank polar tensors (second harmonic generation (SHG), linear Pockels phenomenon, piezoelectricity etc.).…”

“…These crystals possess non-centrosymmetric structure (space group I-43d) that indicates likely presence of effects described by third rank polar tensors (second harmonic generation (SHG), linear Pockels phenomenon, piezoelectricity etc.). We have observed earlier that the compounds Ag 0.5 Pb 1.75 GeS 4 and Ag 0.5 Pb 1.75 GeS 3 Se (25 mol% substitution of Se for S) exhibit frequency-doubling effects such as SHG and two-photon absorption (TPA) [4,5]. The crystals of the solid solution compositions with higher amount of selenium than 25-30 mol% cannot be easily grown by Bridgman-Stockbarger method due to the primary crystallization of PbSe which was shown in the Ref.…”

Single crystal growth, electronic structure and optical properties of Cs2HgBr4

“…The energy scale of the spectrometer was calibrated employing the technique reported in Ref. [17]. The 1s line (284.6 eV) of adventitious carbon was used as a reference to take into account the charging effects as it is suggested for such types of bromides [18][19][20].…”