Optical wavelength conversion device
AssigneeFuji Photo Film Co., Ltd.
InventorsKozi Kamiyama, Yoji Okazaki
Life of this patent
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Abstract
An optical wavelength conversion device is composed of a nonlinear optical material, and a first cladding layer having a refractive index lower than the refractive index of the nonlinear optical material and covering the nonlinear optical material, thereby to convert a fundamental wave entering the optical wavelength conversion device to a second harmonic, to guide the second harmonic through the first cladding layer, and to radiate the second harmonic. A second cladding layer formed of a material having a refractive index lower than the refractive index of the first cladding layer is provided outside of the first cladding layer, thereby to protect the first cladding layer.
Claims4
An optical wavelength conversion device composed of an organic nonlinear optical material, and a first cladding layer disposed outside the nonlinear optical material and having a refractive index lower than the refractive index of the organic nonlinear optical material and covering the organic nonlinear optical material, thereby to convert a fundamental wave entering the optical wavelength conversion device to a second harmonic, to guide the second harmonic through the first cladding layer, and to radiate the second harmonic,
- wherein the improvement comprises a second cladding layer formed of a material having a refractive index lower than the refractive index of said first cladding layer, said second cladding layer being formed outside said first cladding layer,
- wherein the refractive index n.sub.2.sup..omega. of said first cladding layer with respect to said fundamental wave and the refractive index n.sub.3.sup.2.omega. of said second cladding layer with respect to said second harmonic satisfy the relationship expressed as n.sub.2.sup..omega. <n.sub.3.sup.2.omega..
Dependencies are inferred from the claim text.