Browsing 02 Physical Sciences by Author "Samoc Marek"

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Browsing 02 Physical Sciences by Author "Samoc Marek"

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  • Nonlinear Optical Properties Of Semiconducting Nanocrystals In Fused Silica 
    Dowd Annette; Samoc Marek; Luther-Davies Barry; Elliman Robert (Elsevier Science Bv, 1999)
    Degenerate four-wave mixing (DFWM) is used to examine the nonlinear optical response of Ge nanocrystals in a silica matrix. The nanocrystals are formed by implanting 1.0 MeV Ge ions into silica to a dose of 3.0x10(17) Ge ...
  • Nonlinear Optical Response Of Ge Nanocrystals In A Silica Matrix 
    Dowd Annette; Elliman Robert; Samoc Marek; Luther-Davies Barry (Amer Inst Physics, 1999)
    Time-resolved degenerate-four-wave-mixing measurements were used to study the nonlinear optical response (intensity-dependent refractive index! of Ge nanocrystallites embedded in a silica matrix. Nanocrystals were fabricated ...
  • Physical and optical characterisation of Ge-implanted silica 
    Dowd Annette; Llewellyn David; Elliman Robert; Luther-Davies Barry; Samoc Marek; Fitz Gerald John (Elsevier Inc, 2001)
    Ge nanocrystals formed in silica by implantation with 1.0 MeV Ge ions and subsequent annealing at 1100°C were characterised by transmission electron microscopy and Raman spectroscopy. The nanocrystals were found to be ...