Abstract:
PROBLEM TO BE SOLVED: To provide a radiating system including a radiation generator and an illuminating system capable of measuring a relative position of the radiation generator to the illuminating system with the loss of energy suppressed to a minimum level. SOLUTION: The radiating system includes the radiation generator for generating a radiation beam, a radiation source and the illuminating system so as to receive the radiation beam and provide a projected beam of the radiation. The illuminating system includes a beam measuring system for measuring at least any one of the position and gradient of the radiation beam and a projector for re-directing a part of the section of the radiation beam to the beam measuring system. The beam measuring system may include several position sensors, thereby enabling the system to judge the position adjustment of the radiation source to the illuminating system. A diaphragm is connected to a collector of the radiation generator to enable the compensation of Rx, Ry and Rz besides the compensation of X, Y and Z. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source that actualizes an output level and a repetition rate suitable for manufacturing. SOLUTION: A radiation source comprises an anode and a cathode that are configured and arranged to create a discharge in a gas or a vapor in a space between the anode and cathode for forming a plasma so as to generate electromagnetic radiation. The gas or vapor may contain xenon, indium, lithium and/or tin. To improve heat dissipation, the radiation source comprises multiple plasma discharge elements, each of which is used only for short intervals. After one discharge element is used, another discharge element is selected. To improve an exact timing of pinch formation and thus that of pulse of EUV radiation, the radiation source comprises a triggering device. To improve conversion efficiency, the radiation source is configured to have a low inductance, and operates in a self-triggering mode. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source in which an output level and a repeating speed that are suitable for production are realized. SOLUTION: The radiation source comprises an anode 220 and a cathode 210 that are configured and arranged to create a discharge in a gas or vapor in a space between the anode 220 and cathode 210 to form a plasma pinch so as to generate electromagnetic radiation. The gas or vapor may comprise xenon, indium, lithium, and tin. In order to improve heat dissipation, the radiation source LA comprises a plurality of plasma discharge elements 240, each of which is only used for short intervals, after which another discharge element is selected. COPYRIGHT: (C)2004,JPO
Abstract:
A collector is disclosed that is constructed to receive radiation from a radiation source and to transmit radiation to an illumination system, the collector comprising a reflective element (11) which is internally provided with a fluid channel (20).
Abstract:
A radiation system comprising a beam splitting apparatus configured to receive a main radiation beam and split the main radiation beam into a plurality of branch radiation beams and a radiation alteration device arranged to receive an input radiation beam and output a modified radiation beam, wherein the radiation alteration device is configured to provide an output modified radiation beam which has an increased etendue, when compared to the received input radiation beam, wherein the radiation alteration device is arranged such that the input radiation beam which is received by the radiation alteration device is a main radiation beam and the radiation alteration device is configured to provide a modified main radiation beam to the beam splitting apparatus, or wherein the radiation alteration device is arranged such that the input radiation beam which is received by the radiation alteration device is a branch radiation beam output from the beam splitting apparatus.
Abstract:
An optical sensor apparatus (1) for use in an extreme ultraviolet lithographic system is disclosed. The apparatus includes an optical sensor comprising a sensor surface (3) and a removal mechanism (5) configured to remove debris (6) from the sensor surface. Accordingly, dose and/or contamination measurements may be carried out conveniently for the lithographic system.
Abstract:
A method to align a discharge axis of a discharge radiation source with respect to optics of the lithographic apparatus includes creating a discharge in a substance in a discharge space between an anode and a cathode to form a plasma so as to generate electromagnetic radiation. The discharge is triggered by irradiating an area on a surface proximate the discharge space with an energetic beam. The position of the area is controlled in response to a property of the radiation in the lithographic apparatus and/or the temperature of a collector of the lithographic apparatus. Controlling the position of the area which is irradiated improves alignment of the discharge axis with the different lithographic modules, such as the contamination barrier, the illumination system, the substrate table and/or the projection system.
Abstract:
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. To improve heat dissipation, the radiation source comprises a plurality of discharge elements, each of which is only used for short intervals, after which another discharge element is selected. To improve the exact timing of the pinch formation and thus the pulse of EUV radiation, the radiation source comprises a triggering device. To improve the conversion efficiency, the radiation source is constructed to have a low inductance, and operated in a self-triggering regime.
Abstract:
A two-phase thermal conditioning system for thermal conditioning a part of a lithographic apparatus, includes an evaporator to be positioned in thermal contact with the part of the lithographic apparatus for extracting heat from the part by evaporation of a fluid inside the evaporator; a condenser to be positioned at a distance from the part of the lithographic apparatus for removing heat from the fluid inside the condenser by condensation of the fluid inside the condenser; fluid lines arranged between the evaporator and the condenser to form a circuit in which fluid is able to flow; a pump arranged in the circuit to circulate the fluid in the circuit; an accumulator configured to hold fluid, wherein the accumulator is in fluid communication with the circuit and comprises a heat exchanger to transfer heat from or to fluid inside the accumulator; a temperature sensor configured to provide a measurement signal representative of the temperature of the fluid; and a controller configured to maintain a substantially constant temperature of the fluid inside the circuit by regulating the amount of heat transferred by the heat exchanger from or to fluid inside the accumulator based on the measurement signal.(Figure 2)