摘要:
A method for removal of a deposition on an uncapped multilayer mirror of an apparatus. The method includes providing a gas that includes one or more of H2, D2, and DH, and one or more additional compounds selected from hydrocarbon compounds and/or silane compounds in at least part of the apparatus; producing hydrogen and/or deuterium radicals and radicals of the one or more additional compounds, from the gas; and bringing the uncapped multilayer mirror with deposition into contact with at least part of the hydrogen and/or deuterium radicals and the radicals of the one or more additional compounds to remove at least part of the deposition.
摘要:
Proposed is a light sensor (1), comprising at least one wavelength selective photo-detector (10), a lens (20) and an aperture (30).The wavelength selective photo-detector allows detecting light within a predefined wavelength range falling on the sensor. The lens project light on the photo-detector and the aperture defines a field of view of the light sensor. The photo-detector (10), the lens (20), and the aperture (30) are arranged in a telecentric configuration. Advantageously, this allows light to impinge on the wavelength selective photo-detector within a predefined range of angles irrespective of the direction of the light incident on the aperture, thus removing the angle dependent response of the wavelength selective photo-detector.
摘要:
A transmissive spectral purity filter is configured to transmit extreme ultraviolet radiation. The spectral purity filter includes a filter part having a plurality of apertures to transmit extreme ultraviolet radiation and to suppress transmission of a second type of radiation. The apertures may be manufactured in carrier material such as silicon by an anisotropic etching process and topped with a reflective layer such as Mo metal, Ru metal, TiN or RuO. A diffusion barrier layer such as silicon nitride Si3N4, or silicon dioxide SiO2 is provided between the metal and the semiconductor to prevent diffusion and silicidation of the metal at elevated temperatures. The diffusion barrier layer may also serve as a hydrogen-resistant layer on parts of the semiconductor which are not beneath the reflective layer, and/or enhance emissivity for removal of heat from the structure.
摘要翻译:透射光谱纯度滤光器被配置为透射极紫外辐射。 光谱纯度滤光器包括具有多个孔以便透射极紫外辐射并抑制第二类辐射的透射的滤光器部分。 孔可以通过各向异性蚀刻工艺在诸如硅的载体材料中制成,并且覆盖有诸如Mo金属,Ru金属,TiN或RuO的反射层。 在金属和半导体之间设置有诸如氮化硅Si 3 N 4或二氧化硅SiO 2的扩散阻挡层,以防止金属在升高的温度下扩散和硅化。 扩散阻挡层还可以在半导体的不在反射层下面的部分上用作耐氢层,和/或增加用于从结构去除热量的发射率。
摘要:
A light panel (115, 215, 403, 503, 513, 603, 605) having a predetermined number of emitted color options and a processor (113, 213) operably coupled to the light panel (115, 215, 403, 503, 513, 603, 605). The processor (113, 213) responds to a first color selection actuation by controlling the light panel (115, 215, 403, 503, 513, 603, 605) to display each of the predetermined emitted light options within different portions of the light panel (115, 215, 403, 503, 513, 603, 605). Thereafter, the processor (113, 213) responds to a second color selection actuation by controlling the light panel (115, 215, 403, 503, 513, 603, 605) to display a selected one of the predetermined emitted light options substantially over the light panel (115, 215, 403, 503, 513, 603, 605), wherein the selected one of the predetermined emitted light options is indicated by the second color selection actuation.
摘要:
A laser-based light source includes a laser device configured to generate laser light of a predetermined laser wavelength and emit this laser light as a laser beam. A light-conversion device is configured to convert at least part of the laser light into converted light and a laser-output sensor is configured to determine a laser-output signal proportional to the output of laser light emitted by the laser device. Further, a converted-light sensor is configured to determine a converted-light signal proportional to the output of converted light emitted by the light-conversion device. A controller is configured to receive the laser-output signal and the converted-light signal, to determine a safe-to-operate parameter, based on the laser-output signal and the converted-light signal, and to control the operation of the laser-based light source based on a comparison of the safe-to-operate parameter with a at least one predefined threshold.
摘要:
A display system (1) for generating a picture in accordance with image information (10) derived from a video signal has a light modulation device (20), an illumination device (30) and a control circuit (40) for driving both devices. The algorithm implemented in the control circuit (40) distributes the image information (10) over the light modulation device (20) and the illumination device (30) in order to minimize the power consumption of the display system.
摘要:
A laser-based light source includes a laser device configured to generate laser light of a predetermined laser wavelength and emit this laser light as a laser beam. A light-conversion device is configured to convert at least part of the laser light into converted light and a laser-output sensor is configured to determine a laser-output signal proportional to the output of laser light emitted by the laser device. Further, a converted-light sensor is configured to determine a converted-light signal proportional to the output of converted light emitted by the light-conversion device. A controller is configured to receive the laser-output signal and the converted-light signal, to determine a safe-to-operate parameter, based on the laser-output signal and the converted-light signal, and to control the operation of the laser-based light source based on a comparison of the safe-to-operate parameter with a at least one predefined threshold.
摘要:
According to an aspect of the present invention, a spectral purity filter includes an aperture, the aperture being arranged to diffract a first wavelength of radiation and to allow at least a portion of a second wavelength of radiation to be transmitted through the aperture, the second wavelength of radiation being shorter than the first wavelength of radiation, wherein the aperture has a diameter greater than 20 μm.
摘要:
A radiation source may include a radiation emitter for emitting radiation, a collector for collecting radiation emitted by the radiation emitter, and an outlet configured, in use, to introduce a cooled gas into the radiation source.
摘要:
A spectral purity filter, in particular for use in a lithographic apparatus using EUV radiation for the projection beam, includes a plurality of apertures in a substrate. The apertures are defined by walls having side surfaces that are inclined to the normal to a front surface of the substrate.