Optical wavelength converting element
专利汇可以提供Optical wavelength converting element专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain an optical wavelength converting device having a good temperature stability and high efficiency by forming an optical waveguide which has increased its refractive index partially, on the surface of a non-linear single crystal substrate, and providing a thin film having an intermediate refractive index of the substrate and the waveguide, on this waveguide. CONSTITUTION:For instance, an optical waveguide 6 which has increased a refractive index partially is formed on the surface of a non-linear single crystal substrate 5 of LiNbO3, etc., and a thin film 7 whose refractive index has an intermediate value of the substrate 5 and the waveguide 6 is provided on this waveguide 6. It is not always necessary that such a thin film 7 is made of a material having a non-linear optical effect, and an amorphous film of TiO2, etc. is also available. In this way, by providing the thin film 7 having an intemediate refractive index of the substrate 5 and the optical waveguide 6, the conversion efficiency can be raised more than 30 times as high as that of a conventional one. Also, by providing electrodes 8, 8', connecting the Z surface of the substrate 5, and short-circuiting it electrically, the influence of a pyroelectric effect of the substrate 5 can be reduced. In this way, this element is combined with an infrared semiconductor laser, etc. and used as a small-sized visible laser light source for various optical displays, optical information apparatuses, etc.，下面是Optical wavelength converting element专利的具体信息内容。
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6 热电元件
