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  • Articles  (2)
  • American Institute of Physics (AIP)  (2)
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  • Articles  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Graded-index diffractive elements by thermal ion exchange in glass (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 917-919 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-efficiency diffractive elements with a graded volume distribution of refractive index are proposed, designed, and fabricated using thermal ion exchange in glass. A deliberate use of isotropic diffusion of ions enables us to generate, even with a single binary mask, a structure that acts like a continuous surface-relief profile. The advantages of the proposed method include the ease of cleaning and antireflection coating the flat surface, the absence of alignment problems in the fabrication process, and compatibility with stacked planar optics. A grating beam splitter with three equal-efficiency central orders and 89.7% diffraction efficiency is demonstrated. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.113596
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  • 2
    Electronic Resource
    Electronic Resource
    A general model for fabrication processes of channel waveguides by ion exchange (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 2746-2752 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A general theoretical approach to the modeling of several different process steps in fabrication of ion-exchanged channel waveguides is presented. All of the commonly used fabrication processes are included, and the nature of the ion source and the effect of external electric voltage are taken into account. The model uses a numerical finite-difference calculation of diffusion in the glass with boundary conditions and electrical current distribution chosen according to the process being modeled. A single computer program includes the model, and can be used for simulating a fabrication process with different successive process steps. Several calculated examples are given, all with experimentally obtained parameters for Ag+ -Na+ exchange in Corning 0211 glass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345440
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