A method of manufacturing the rare earth ion diffusion region of the light emitting element and ligh

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PROBLEM TO BE SOLVED : To enable control of the desired position of the concentration distribution peak values of rare earth element ions and adjustment of the luminous intensity of a light-emitting element, by keeping the rare earth element ions in a predetermined distribution conditions and moving the diffusion region of rare earth element ions in a substrate depthwise direction through heat treatment. SOLUTION : A manufacturing method comprises the steps of forming a diffusion region 16 of rare earth element ions, having a predetermined distribution in a substrate 11, and keeping rare earth element ions in a state of predetermined distribution and making the diffusion region 16 of rare earth element ions move, in the depthwise direction of the substrate 11 through heat treatment. COPYRIGHT : (C)2006, JPO&NCIPI