title: Second-order susceptibility spectra for δ-BiB₃O₆ polymer nanocomposites deposited on the chalcogenide crystals.
abstract: The optimized conditions for the enhancement of the second harmonic generation in the composites of the orthorhombic δ-BiB3O6:Pr(3+) nanoparticles embedded in polyvinyl alcohol films and deposited on the AgGaGe2Se6, AgGaGe2.7Si0.3Se8 (90 mol.% AgGaGe3Se8 - 10 mol.% AgGaSi3Se8), and AgGaGe3Se8:Cu substrates were established. The highest second-order susceptibility was achieved during the Ag-Ga-Ge-Se crystalline substrates photo-illumination by nanosecond laser pulses of about 2900 nm wavelength. The effect was found to be completely reversible after the interruption of the photo-inducing stimulation. Complementary studies of Atomic Force Microscopy, AFM, X-ray Diffraction, XRD, and Fourier-Transform Infrared Spectroscopy, and DFT simulations of spectral dependences of the corresponding second-order nonlinear optical susceptibilities, were performed.
authors: Faculty of Electrical Engineering, Czestochowa University Technology, PL-42201 Czestochowa, Poland. Electronic address: iwank74@gmail.com.
authors: I V
authors: IV
authors: Kityk
authors: Institute of Applied Physics, Military University Technology, 2 Kaliskiego, 00-908 Warsaw, Poland.
authors: M
authors: M
authors: Chrunik
authors: Institute of Applied Physics, Military University Technology, 2 Kaliskiego, 00-908 Warsaw, Poland.
authors: A
authors: A
authors: Majchrowski
authors: INFN - LNF, Via E. Fermi, 40, I-00044 Frascati, Rome, Italy.
authors: Mariangela Cestelli
authors: MC
authors: Guidi
authors: INFN - LNF, Via E. Fermi, 40, I-00044 Frascati, Rome, Italy.
authors: Marco
authors: M
authors: Angelucci
authors: INFN - LNF, Via E. Fermi, 40, I-00044 Frascati, Rome, Italy; Department of Physics, Faculty of Science, Helwan University, Cairo, Egypt.
authors: Gihan
authors: G
authors: Kamel
authors: Lviv National University of Veterinary Medicine and Biotechnologies, Department of Inorganic and Organic Chemistry, Pekarska St. 50, 79010 Lviv, Ukraine.
authors: A O
authors: AO
authors: Fedorchuk
authors: Institute of Applied Physics, Military University Technology, 2 Kaliskiego, 00-908 Warsaw, Poland.
authors: M
authors: M
authors: Pępczyńska
authors: Institute of Applied Physics, Military University Technology, 2 Kaliskiego, 00-908 Warsaw, Poland.
authors: L R
authors: LR
authors: Jaroszewicz
authors: Electronic Department, Lviv State University, Lviv, Ukraine.
authors: O
authors: O
authors: Parasyuk
authors: Department of Electronics, Lviv Franko National University, Lviv, Ukraine.
authors: I M
authors: IM
authors: Bolesta
authors: Institute of Applied Physics, Military University Technology, 2 Kaliskiego, 00-908 Warsaw, Poland.
authors: R
authors: R
authors: Kowerdziej
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D001881:Borates / Q000737:chemistry*; D018011:Chalcogens / Q000737:chemistry; D018625:Microscopy, Atomic Force; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D001881:Borates; D018011:Chalcogens; D001729:Bismuth
keywords: DFT simulations; FTIR spectra; Nonlinear optical materials; Polymer nanocomposites