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