Browse Prior Art Database

Use of Potassium Niobate Waveguides for Second Harmonic Generation with GaAlAs Lasers

IP.com Disclosure Number: IPCOM000052981D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 19K

Publishing Venue

IBM

Related People

Jain, K: AUTHOR

Abstract

A system for generating coherent blue light includes potassium niobate waveguides for second-harmonic generation with GaAlAs lasers. As shown in the drawing, the system 10 has a GaAlAs laser source 12 from which a beam 14 enters a potassium niobate (KNbO(3)) waveguide 16.

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Use of Potassium Niobate Waveguides for Second Harmonic Generation with GaAlAs Lasers

A system for generating coherent blue light includes potassium niobate waveguides for second-harmonic generation with GaAlAs lasers. As shown in the drawing, the system 10 has a GaAlAs laser source 12 from which a beam 14 enters a potassium niobate (KNbO(3)) waveguide 16.

The KNbO(3) waveguide is made by one of several methods: (a) diffusion of materials other than K and Nb into a single crystal of KNbO(3) (b) outdiffusion of K from the top layer of a KNbO(3) single crystal, (c) ion implantation in KNbO(3), and (d) deposition of KNbO(3) on a suitable substrate by sputtering, liquid-phase epitaxy, molecular-beam epitaxy, etc. In implementations (a), (b) and (c), the crystal orientation of the KNbO is such so as to provide non-critical phase matched propagation of the fundamental and the second-harmonic frequency (blue light) 18 of the GaAlAs laser.

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