Abstract:
An apparatus for measuring an image of a pattern to be formed on a semiconductor by scanning the pattern using a scanner, the apparatus including an EUV mask including the pattern, a zoneplate lens on a first side of the EUV mask and adapted to focus EUV light on a portion of the EUV mask at a same angle as an angle at which the scanner will be disposed with respect to a normal line of the EUV mask, and a detector arranged on another side of the EUV mask and adapted to sense energy of the EUV light from the EUV mask, wherein NAzoneplate=NAscanner/n and NAdetector=NAscanner/n*σ, where NAzoneplate denotes a NA of the zoneplate lens, NAdetector denotes a NA of the detector, and NAscanner denotes a NA of the scanner, σ denotes an off-axis degree of the scanner, and n denotes a reduction magnification of the scanner.
Abstract:
A multi-energy imaging system and method for selectively generating high-energy X-rays and low-energy X-ray beams are described. A pair of optic devices are used, one optic device being formed to emit high X-ray energies and the other optic device being formed to emit low X-ray energies. A selective filtering mechanism is used to filter the high X-ray energies from the low X-ray energies. The optic devices have at least a first solid phase layer having a first index of refraction with a first photon transmission property and a second solid phase layer having a second index of refraction with a second photon transmission property. The first and second layers are conformal to each other.
Abstract:
An ultra-small angle X-ray scattering measuring apparatus includes a detector for detecting X-rays emitted from a sample, an X-ray collimating mirror arranged between the X-ray real focus and the sample, a monochromator arranged between the X-ray collimating mirror and the sample and an analyzer arranged between the sample and the detector. The X-ray collimating mirror includes a pair of X-ray mirrors that are arranged orthogonally relative to each other. The X-ray mirrors are multilayer film mirrors and their X-ray reflection surfaces are paraboloidal. The interplanar spacing of lattice planes of each of the multilayer films is continuously changed along the paraboloid so as to meet the Bragg's condition. The monochromator and the analyzer are formed by using a channel-cut crystal. The analyzer is driven to rotate for scanning around a 2θ-axial line and diffracted rays reduced to a spectrum by the analyzer are detected by the detector.
Abstract:
An x-ray analysis apparatus for illuminating a sample spot with an x-ray beam. An x-ray tube is provided having a source spot from which a diverging x-ray beam is produced, the source spot requiring alignment along a transmission axis passing through the sample spot. A first housing section is provided, to which the x-ray tube is attached, including mounting features for adjustably mounting the x-ray tube therein such that the source spot coincides with the transmission axis. A second housing section includes a second axis coinciding with the transmission axis; and at least one x-ray optic attached to the second housing section for receiving the diverging x-ray beam and directing the beam toward the sample spot. Complimentary mating surfaces may be provided to align the first and second sections, and the optics, to the transmission axis. A third housing section may also be provided, including an aperture through which the x-ray beam passes, and to which a detector may be attached.
Abstract:
A method of manufacturing a photomask includes: providing a photomask; exposing the photomask to obtain an aerial image of the photomask and evaluating the photomask using the aerial image; and altering an optical parameter of the photomask associated with the aerial image according to the result of evaluation.
Abstract:
There is provided an illumination system for microlithography. The illumination system includes an optical element having a plurality of field raster elements, a plane in which a field is illuminated, and a grazing incidence mirror situated in a light path from the optical element to the plane, after the optical element. The illumination system has no other grazing incidence mirror in the light path, after the optical element and before the plane.
Abstract:
The light of a broad energy band can be observed by reflecting the light of the broad energy band, for example, the light from the visible light region to the x-ray region at a high reflectance respectively, by a composite telescope including a normal incidence optical system and an oblique incidence optical system. A broadband telescope comprise an oblique incidence optical system unit in which the light is obliquely incident on a surface part for reflecting the incident light, a normal incidence optical system unit in which the light is substantially vertically incident on a surface part for reflecting the incident light, and an analyzer for spectrum analysis of the light reflected by the surface part of the obliquely incidence optical system unit and the light reflected by the surface part of the normal incidence optical system unit.
Abstract:
A detector apparatus is disclosed that includes a housing and a multilayer disposed within the housing. The multilayer defining a leading edge and a trailing edge and is adapted to interact with a plurality of high-energy photons, impingent from the leading edge, to permit passage of photons of at least one selected energy. The multilayer is secured to a first securement adjacent to the leading edge. The multilayer is secured to a second securement bracket adjacent to the trailing edge. At least one detector is disposed adjacent to the trailing edge of the multilayer to detect the impingent high-energy photons. An adjustment mechanism operatively connects to the second securement bracket to adjust the position of the second securement bracket, thereby altering an angular position of the multilayer.
Abstract:
This invention extends the Kirkpatrick-Baez (KB) mirror focusing geometry to allow nondispersive focusing of neutrons with a convergence on a sample much larger than is possible with existing KB optical schemes by establishing an array of at least three mirrors and focusing neutrons by appropriate multiple deflections via the array. The method may be utilized with supermirrors, multilayer mirrors, or total external reflection mirrors. Because high-energy x-rays behave like neutrons in their absorption and reflectivity rates, this method may be used with x-rays as well as neutrons.
Abstract:
The invention relates to an optical device intended to treat an incident X-ray beam. The optical device comprises a monochromator and an optical element for conditioning the incident beam. The reflective surface of the optical element is able to produce a two-dimensional optical effect in order to adapt a beam in destination of the monochromator. The reflective surface of the optical element comprises a multilayer structure type surface that is reflective to X-rays. In particular, the reflective surface consists of a single surface shaped according to two curvatures corresponding to two different directions.