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Optical head, information storage apparatus, optical head design apparatus, and optical head design program storage medium
Optical head, information storage apparatus, optical head design apparatus, and optical head design program storage medium
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机译:光学头,信息存储设备,光学头设计设备和光学头设计程序存储介质
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摘要
An optical head has a first propagation section made of a first low extinction material and installed along an optical axis, a pair of second propagation sections which, being made of a second low extinction material, sandwich the first propagation section, a pair of first confining sections which, being made of a material with propagation capability lower than that of the second propagation sections, further sandwich the first propagation section and second propagation sections from outside the second propagation sections, and a pair of third propagation sections which, being made of a material with light propagation capability higher than that of the first confining sections, further sandwich the first confining sections from outside. Also, an optical head design apparatus calculates a complex propagation constant along an optical axis by solving an equation which is based on F matrices, and thereby design an optical head in a far-sighted manner.
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