Abstract
Waveguides in are realized by a soft proton exchange (SPE) process with use of a melt of stearic acid highly diluted by lithium stearate. No phase transitions are formed when α-phase waveguides are obtained by SPE. The α-phase presents the same crystalline structure as that of pure crystal, and it maintains the excellent nonlinear and electro-optical properties of the bulk material. The kinetics of the SPE method is studied by the use of secondary-ion mass spectrometry and prism-coupling techniques. The hydrogen effective diffusion coefficient as well as the self-diffusion coefficients of and ions are determined as a function of the proton-exchange temperature for X-cut
© 2001 Optical Society of America
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