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"Second-harmonic generation in GaS crystals" K. Allakhverdiev, F. Ismailov, L. Kador und M. BraunSolid State Communications, 104 (1), 1-3, 1997 Abstract: Second-harmonic generation in the layered semiconductor GaS excited with the wavelength lambda = 1579 nm is investigated with the Maker fringe technique. It is shown that the second-harmonic signal originates from domains in the crystal, which consist of the noncentrosymmetric C-5(3 upsilon) polytype. The results are in good agreement with X-ray diffraction data. This publication has not been written at BMO BMO authors (in alphabetic order): Markus Braun |