摘要 |
Provided is an optical multilayer structure having a simpler configuration, flexibility in selection of materials and improved reliability in wiring and capable of high-speed response even in a visible light range. A optical multilayer structure (1) comprises a first layer (11) being light-absorptive and making contact with a substrate (10), a gap portion (12) having as large a size as light interference phenomenon can occur and being capable of varying the size, and a second layer (13) being transparent in this order on the substrate (10). Where a complex refractive index of the first layer (11) is N1 (=n1-i.k1, n1 is a refractive index, k1 is an extinction coefficient, and i is an imaginary unit), a refractive index of the second layer (13) is n2, and a refractive index of an incident medium is 1.0, the optical multilayer structure (1) is configured so as to satisfy the following formula. <math-cwu id="MATH-US-00001"> <NUMBER>1</NUMBER> <MATH> <MROW> <MROW> <MSUP> <MROW> <MO>(</MO> <MROW> <MSUB> <MI>n</MI> <MN>1</MN> </MSUB> <MO>-</MO> <MFRAC> <MROW> <MSUBSUP> <MI>n</MI> <MN>2</MN> <MN>2</MN> </MSUBSUP> <MO>+</MO> <MN>1</MN> </MROW> <MN>2</MN> </MFRAC> </MROW> <MO>)</MO> </MROW> <MN>2</MN> </MSUP> <MO>+</MO> <MSUBSUP> <MI>k</MI> <MN>1</MN> <MN>2</MN> </MSUBSUP> <MO>-</MO> <MSUP> <MROW> <MO>(</MO> <MFRAC> <MROW> <MSUBSUP> <MI>n</MI> <MN>2</MN> <MN>2</MN> </MSUBSUP> <MO>-</MO> <MN>1</MN> </MROW> <MN>2</MN> </MFRAC> <MO>)</MO> </MROW> <MN>2</MN> </MSUP> </MROW> <MO>=</MO> <MN>0</MN> </MROW> </MATH> <mathematica-file id="MATHEMATICA-00001" file="US20040027701A1-20040212-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="23.04855" file="US20040027701A1-20040212-M00001.TIF" imf="TIFF" ti="MF"/> </MATH-CWU>
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