Method of manufacturing wavelength conversion device

Details Method of manufacturing wavelength conversion device Method of manufacturing wavelength conversion device

1991-11-22

1993-06-22

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 31, 65 33, C03C 2100, G02B 514

Patent

active

052213102

ABSTRACT:
A wavelength conversion device exhibiting an excellent wavelength conversion efficiency is provided by forming it in such a manner that an LiTaO.sub.3 substrate is subjected to a proton exchange treatment to form a proton-exchange layer before the proton-exchange layer is subjected to heat treatment to form a domain-inverted structure. Heat treatment is performed at a high temperature rising speed to prevent the thermal diffusion of the proton-exchange layer so that the expansion of the domain-inverted structure to be formed in the proton-exchange layer is restrained. As a result, a higher harmonic wave wavelength conversion device can be provided.

REFERENCES:
patent: 4196963 (1980-04-01), Chen et al.
patent: 4400052 (1983-08-01), Alferness et al.
"Blue Light Generation By Frequency Doubling in Periodically Poled Lithium Niobate Channel Waveguide," Electronics Letters, vol. 25, No. 11, pp. 731-732, May 1989.
Nakamura, et al, "Ferroelectric Inversion Layers Formed By Heat Treatment of Proton-Exchanged LiTaO.sub.3," Appl. Phys. Lett. vol. 56, pp. 1535-1536, Apr. 1990.
Sasson Somekh "Phase Matching by Periodic Modulation of the Nonlinear Optical Properties," Optics Communications, pp. 301-304, Nov. 1972.

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