摘要:
A radiation source includes a chamber, a supply constructed and arranged to supply a substance to the chamber at a location that allows the substance to pass through an interaction point within the chamber, a laser constructed and arranged to provide a laser beam to the interaction point so that a radiation emitting plasma is produced when the laser beam interacts with the substance at the interaction point, and a conduit constructed and arranged to deliver a buffer gas into the chamber. The conduit has an outlet located adjacent to the interaction point.
摘要:
Embodiments of the invention relate to a system for contactless cleaning of an object surface, a lithographic apparatus including the system, and a method of manufacturing a device. The system may include a He plasma source contained in a chamber and a control unit constructed to modify plasma parameters in use, such as the electron energy distribution of the plasma for causing an increase in formation of He metastables without modifying operational parameters of the plasma source. The control unit may include an electrical biasing unit constructed to apply a positive bias voltage to the object, for attracting free electrons from the plasma. The system may include a supplementary gas source, which may be either pre-mixed with He or be supplied from a further gas source. The supplementary gas may be selected based on a pre-knowledge on a type of particles to be expected on the surface of the object.
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 lithographic apparatus is disclosed. The apparatus includes a source for supplying hydrogen radicals, a guide for use in conjunction with the source, for directing hydrogen radicals to an application surface to be targeted by the hydrogen radicals. The guide is provided with a coating having a hydrogen radical recombination constant of less than 0.2. In this way, the radicals can be transported with reduced losses and are able to better interact with remaining contaminants on application surfaces, such as mirror surfaces.
摘要:
A radiation source comprises an anode and a cathode that are configured and arranged to create a discharge in a gas or vapor in a space between anode and cathode and to form a plasma pinch so as to generate electromagnetic radiation. The gas or vapor may comprise xenon, indium, lithium and/or tin. The radiation source may comprise a plurality of discharge elements, each of which is only used for short intervals, after which another discharge element is selected. The radiation source may also comprise a triggering device, which device can facilitate improving the exact timing of the pinch formation and thus the pulse of EUV radiation. The radiation source may also be constructed to have a low inductance, and operated in a self-triggering regime.
摘要:
A lithographic system includes a source configured to generate a radiation, the source including a cathode and an anode, the cathode and the anode configured to create a discharge in a fuel located in a discharge space so as to generate a plasma, the discharge space including, in use, a substance configured to adjust radiation emission by the plasma so as to control a volume defined by the plasma; a pattern support configured to hold a patterning device, the patterning device configured to pattern the radiation to form a patterned beam of radiation; a substrate support configured to support a substrate; and a projection system configured to project the patterned beam of radiation onto the substrate.
摘要:
A lithographic apparatus is disclosed. The apparatus includes a projection system configured to project a first radiation beam onto a target portion of a substrate, and at least one monitoring device for detecting contamination in a interior space. The monitoring device includes at least one dummy element having at least one contamination receiving surface. In an aspect of the invention, there is provided at least one dummy element which does not take part in transferring a radiation beam onto a target portion of a substrate, wherein it is monitored whether a contamination receiving surface of the dummy element has been contaminated.
摘要:
An assembly is provided for blocking a beam of radiation. The assembly has a pipe arranged to transmit at least part of the beam of radiation. The pipe has an inner surface provided with an ablation material and encloses a volume. The assembly further has an ablation generation device. The ablation generation device is arranged to ablate at least a portion of the ablation material upon reception of a blocking signal. The assembly has a control unit, which is arranged to control the ablation generation device.
摘要:
A radiation source is disclosed that includes an anode and a cathode that are configured and arranged to create a discharge in a substance in a discharge space between the anode and the cathode and to form a plasma so as to generate electromagnetic radiation, the anode and the cathode being rotatably mounted around an axis of rotation, the cathode being arranged to hold a liquid metal. The radiation source further includes an activation source arranged to direct an energy beam onto the liquid metal so as to vaporize part of the liquid metal and a liquid metal provider arranged to supply additional liquid metal so as to compensate for the vaporized part of the liquid metal.