Browsing 02 Physical Sciences by Author "De Silva Lakshman"

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Browsing 02 Physical Sciences by Author "De Silva Lakshman"

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  • Allsilicon polarizing filters for nearinfrared wavelengths 
    Wu Qi; De Silva Lakshman; Arnold Matthew; Hodgkinson Ian; Takeuchi Eric (American Institute of Physics, 2004)
    We discuss the design and fabrication of optical filters that are transparent to a preferred linear polarization, but are partially or substantially reflective to the orthogonal linear polarization. The filters are ...
  • Biaxial thinfilm coatedplate polarizing beam splitters 
    Hodgkinson Ian; Wu Qi; Arnold Matthew; De Silva Lakshman; Beydaghyan Gisia; Kaminska Kate; Robbie Kevin (Optical Society of America, 2006)
    We present a design for a biaxial thin-film coated-plate polarizing beam splitter that transmits the p-polarized component of a beam of light without change of direction and reflects the s-polarized component. The beam ...
  • Bideposited thinfilm retardation plates for use at deep UV wavelengths 
    Hodgkinson Ian; Wu Qi; Arnold Matthew; De Silva Lakshman; Blaikie Richard (Elsevier Inc, 2004)
    The physical vapour deposition process of serial bideposition is used to fabricate inorganic retardation plates of LaF3, NdF3, Sc2O3 and SmF3. For a deposition angle of 70 the form-birefringent materials exhibit linear ...
  • Inorganic positive uniaxial films fabricated by serial bideposition 
    Hodgkinson Ian; Wu Qi; De Silva Lakshman; Arnold Matthew (Optical Society of America, 2004)
    The physical vapor deposition process of serial bideposition is adapted to the fabrication of uniaxial optical coatings. During the coating process the vapor impinges at an angle of incidence of about 70 on to the substrate, ...
  • Structurallyperturbed chiral Bragg reflectors for elliptically polarized light 
    Hodgkinson Ian; Wu Qi; De Silva Lakshman; Arnold Matthew; Lakhtakia Akhlesh; Mccall Martin (Optical Society of America, 2005)
    The structure of an inorganic chiral medium represented as a stack of identical form-birefringent layers that twist steadily with increasing thickness is perturbed by realigning a fraction of each layer to a fixed ...
  • Supermodes of chiral photonic filters with combined twist and layer defects 
    Hodgkinson Ian; Wu Qi; De Silva Lakshman; Arnold Matthew; Mccall Martin; Lakhtakia Akhlesh (American Physical Society, 2003)
    We consider the circularly polarized localized modes of chiral photonic structures with combined central twist and isotropic layer defects. The general filter is shown to suffer from anomalous remittance and saturation ...