Abstract
Quasi-phase-matched second-harmonic generation of visible light in optical waveguides is a promising source of blue-green coherent light that may have applications to optical-disk storage systems. Bierlein et al.1 have studied periodically segmented waveguides in KTP and have demonstrated that it is possible to efficiently generate blue-green light. A typical structure consists of an array of ion-exchanged regions with refractive index n0 + Δn that are embedded in a medium with refractive index n0, as shown in Fig. 1. This structure is unconventional because guiding and nonguiding sections alternate.
© 1995 Optical Society of America
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