摘要:
An optical filter that transmits light of the visible light region includes a dielectric substrate; a dielectric layer that is formed on a surface of the dielectric substrate; and a first metal structure group in which a plurality of first metal structures are arranged two-dimensionally in an isolated state in the in-plane direction of the dielectric substrate, that is provided between the dielectric substrate and the dielectric layer, comprising: the first metal structures having first and second lengths in first and second directions orthogonal to each other, which lengths are equal to or less than a first wavelength in the visible light region; and a transmittance of the first wavelength being reduced or a reflectance being increased by surface plasmons induced on a surface of the first metal structures by resonance between light incident on the dielectric substrate or the dielectric layer and the first metal structures.
摘要:
An optical filter that transmits light of the visible light region includes a dielectric substrate; a dielectric layer that is formed on a surface of the dielectric substrate; and a first metal structure group in which a plurality of first metal structures are arranged two-dimensionally in an isolated state in the in-plane direction of the dielectric substrate, that is provided between the dielectric substrate and the dielectric layer, comprising: the first metal structures having first and second lengths in first and second directions orthogonal to each other, which lengths are equal to or less than a first wavelength in the visible light region; and a transmittance of the first wavelength being reduced or a reflectance being increased by surface plasmons induced on a surface of the first metal structures by resonance between light incident on the dielectric substrate or the dielectric layer and the first metal structures.
摘要:
A sensor device is formed from a metal film having a plurality of openings, a sensor material positioned within each of the openings, a light source that emits light having a first wavelength, and a light detector that detects light emitted from the light source and transmitted through or reflected from the openings. The plurality of openings are arranged periodically in a first direction in the metal film, and both a size of each of the plurality of openings and an interval thereof in the first direction are equal to or less than the wavelength of the light.
摘要:
Provided is a surface emitting laser manufacturing method, etc., which reduces process damage occurring to a surface relief structure, enabling stable provision of a single transverse mode characteristic. Provided is a method including a surface relief structure for controlling a reflectance in a light emitting portion of an upper mirror, the surface relief structure including a stepped structure, includes: forming a resist pattern including a pattern for forming a mesa structure and a pattern for forming a stepped structure, on or above the upper mirror, and performing first-phase etching for etching the surface layer of the upper mirror to determine the horizontal position of the stepped structure; forming a current confining structure after the performing first-phase etching; and performing second-phase etching for further etching the area that the first-phase etching has been performed, to determine the depth position of the stepped structure, after the forming a current confining structure.
摘要:
A resist pattern forming method includes preparing a photomask for generating near-field light having an intensity distribution. The photomask has a light-transmissible base member, and a light-blocking film. The film has a micro-aperture adapted to expose an object to near-field light seeping out from the micro-aperture. The photomask has a periodic structure and a shift of a phase. The shift exists between recesses or projections adjacent to the micro-aperture. A difference in the intensity distribution of the near-field light in the area of the aperture is reduced. The photomask is arranged close to a photoresist film on a substrate. Light from a light source irradiates the photoresist film by way of the photomask to form a latent image based on the micro-aperture, and the photoresist film is developed to form a resist pattern on the substrate based on the latent image.
摘要:
A near-field exposure method in which a light blocking film with an opening having an opening width not greater than a wavelength size of exposure light is contacted to an object to be exposed and in which light from an exposure light source is projected on the light blocking film so that a pattern based on the opening of the light blocking film is formed on the object to be exposed, by use of near-field light produced at the opening, wherein the object to be exposed is prepared by a process that includes (i) a step of providing, upon a substrate having surface irregularity, a shape buffering layer so as to fill the surface irregularity thereof to thereby flatten the surface of the substrate, (ii) a step of providing, upon the shape buffering layer, a light reflecting layer for reflecting the exposure light, and (iii) a step of providing a photosensitive resist layer upon the light reflecting layer, and wherein the exposure is carried out to the object so prepared.
摘要:
There is provided a positive photoresist for near-field exposure excellent in light utilization efficiency even with small layer thickness of the photoresist layer for image formation, and allowing for reduced pattern edge roughness, and a photolithography method including a step of exposing by the near-field exposure the photoresist layer for image formation made thereof. In a positive photoresist containing an alkali-soluble novolak resin and a quinone diazide compound, the film thickness of the photoresist at the time of exposure is not larger than 100 nm, and the absorption coefficient of the photoresist α (μm−1) for the exposure light is such that 0.5≦α≦7.
摘要:
Disclosed is a method and apparatus for detecting a relative positional deviation between first and second objects. In one preferred form of the invention, the detecting method includes the steps of (i) providing the first and second objects with diffraction gratings, respectively, each having a grating pitch larger than a wavelength of a light source used, (ii) placing the first and second objects so that a dielectric material layer having a thickness smaller than the wavelength of the light source used is interposed between the first and second objects, and so that the diffraction gratings of the first and second objects are opposed to each other, (iii) projecting light from the light source onto the diffraction gratings of the first and second objects, and (iv) detecting the relative positional deviation between the first and second objects on the basis of diffraction light projected from the diffraction gratings to a space.
摘要:
A photomask for near-field light exposure includes a transparent substrate, and a shading member on the substrate, the shading member having a mask pattern including an aperture with a width not greater than the wavelength of light from a light source. The shading member has a thickness that provides a required light intensity right below the aperture in consideration of a relationship with the width of the aperture.
摘要:
Disclosed is a method and apparatus for detecting a relative positional deviation between first and second objects. In one preferred form of the invention, the detecting method includes the steps of (i) providing the first and second objects with diffraction gratings, respectively, each having a grating pitch larger than a wavelength of a light source used, (ii) placing the first and second objects so that a dielectric material layer having a thickness smaller than the wavelength of the light source used is interposed between the first and second objects, and so that the diffraction gratings of the first and second objects are opposed to each other, (iii) projecting light from the light source onto the diffraction gratings of the first and second objects, and (iv) detecting the relative positional deviation between the first and second objects on the basis of diffraction light projected from the diffraction gratings to a space.