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DIFFRACTION LATTICE ELEMENT, PRODUCTION METHOD FOR DIFFRACTION LATTICE ELEMENT, AND DESIGN METHOD FOR DIFFRACTION LATTICE ELEMENT
DIFFRACTION LATTICE ELEMENT, PRODUCTION METHOD FOR DIFFRACTION LATTICE ELEMENT, AND DESIGN METHOD FOR DIFFRACTION LATTICE ELEMENT
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机译:衍射晶格要素,衍射晶格要素的制造方法以及衍射晶格要素的设计方法
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摘要
In a diffraction grating element 10, between a first medium 11 and a fourth medium 14, a second medium 12 and a third medium 13 are disposed alternately to form a diffraction grating. The light, which enters the diffraction grating from the first medium 11, is diffracted at the diffraction grating portion and output to a fourth medium 14. Or, the light, which enters the diffraction grating from the fourth medium 14, is diffracted at the diffraction grating portion and output to the first medium 11. The index of refraction n1-n4 of each medium satisfies a relational expression of "n3n1n2, n3≤n4≤n2" or "n3≤n1≤n2, n3n4n2".
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