Characterization of planar waveguides obtained by proton exchange in lithium iodate

Due to its non-linear optical properties, lithium iodate is commonly used in optical devices. By proton exchange, performed by immersing z-cuts LiIO 3 single crystals in a molten hydrated nitrate salt, we formed a solid solution Li 1− x H x IO 3 layer close to the surface. This modification of the s...

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Bibliographic Details
Published in:Optical materials 2003-06, Vol.22 (4), p.391-396
Main Authors: Teyssier, Jérémie, Dantec, Ronan Le, Galez, Christine, Bouillot, Jacques
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Engineering Sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
LiIO 3
Materials and structures in mechanics
Mechanics
Non-linear optics
Nonlinear optical crystals
Optical and optoelectronic circuits
Optical materials
Optical waveguides and couplers
Optics
Physics
Planar waveguides
Proton exchange
Raman spectroscopy
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Summary:Due to its non-linear optical properties, lithium iodate is commonly used in optical devices. By proton exchange, performed by immersing z-cuts LiIO 3 single crystals in a molten hydrated nitrate salt, we formed a solid solution Li 1− x H x IO 3 layer close to the surface. This modification of the structure increases the refractive index so that a waveguide is created. The index profile obtained by m-lines spectroscopy combined with structure characterization by μ-Raman and X-ray diffraction experiments allows us to describe the diffusion process of hydrogen in LiIO 3.
ISSN:0925-3467
1873-1252
DOI:10.1016/S0925-3467(02)00374-9