Abstract:
The extreme ultraviolet light generation device includes a chamber having a first through-hole that allows a pulse laser beam to enter the chamber, a target supply unit held by the chamber and configured to output a target toward a predetermined region in the chamber, a shield member surrounding the predetermined region in the chamber and having a target path that allows the target outputted from the target supply unit to pass toward the predetermined region, and a tubular member surrounding at least a part of an upstream portion of the trajectory of the target outputted from the target supply unit toward the predetermined region, the upstream portion being upstream from the target path of the shield member.
Abstract:
An extreme ultraviolet light generation apparatus includes a target supplier configured to output a target into a chamber as a droplet, the target generating extreme ultraviolet light when being irradiated with a laser beam in the chamber; a droplet measurement unit configured to measure a parameter for a state of the droplet outputted into the chamber; a pressure regulator configured to regulate a pressure in the target supplier in which the target is accommodated; and a target generation controller configured to control the pressure regulator, based on the parameter measured by the droplet measurement unit.
Abstract:
An aspect of the present disclosure may include a gas lock cover secured to a nozzle holder and provided downstream of a nozzle. The gas lock cover may cover a periphery of an exit of the nozzle and be structured to guide gas supplied from a gas supply unit. The gas lock cover may include a hollow cylindrical part provided downstream of the nozzle and having an exit opening for outputting droplets that are outputted from the nozzle and pass through an internal cavity of the cylindrical part. The gas lock cover may include a channel for transmitting the gas supplied from the gas supply unit, the channel being structured to orient a flow of the transmitted gas so as to flow to the exit opening of the cylindrical part through the internal cavity of the cylindrical part.
Abstract:
An extreme ultraviolet light generation system may include a beam focusing optics configured such that a pre-pulse laser beam and a main pulse laser beam are focused on a plasma generation region, and that a beam path axis of the pre-pulse laser beam and a beam path axis of the main pulse laser beam pass through the plasma generation region at an angle equal to or smaller than a loss-cone angle with respect to a central axis of a magnetic field that is generated by a magnetic field generator. A first laser apparatus and a second laser apparatus may be controlled such that, after a target outputted from a target generation unit has been irradiated with the pre-pulse laser beam in the plasma generation region, the target is irradiated with the main pulse laser beam with a delay time ranging from 0.5 μs or longer to 7 μs or shorter.
Abstract:
An extreme ultraviolet light generation apparatus may include: a chamber; a target supply unit configured to output a target toward a predetermined region inside the chamber; a first gas supply unit configured to blow out gas in a first direction toward a trajectory of the target between the target supply unit and the predetermined region; and a focusing optical system configured to concentrate a pulse laser beam to the predetermined region.
Abstract:
An extreme ultraviolet light generation system may include an optical device configured to cause an optical path of a pulse laser beam to approximately match one of a first optical path in which the pulse laser beam is focused at a plasma generation region and a second optical path in which the pulse laser beam passes outside the plasma generation region, and a control unit configured to output a control signal to the optical device so that the optical device sets the optical path of the pulse laser beam to the second optical path from when a predetermined time starts to when the number of pulses contained in a timing signal reaches a predetermined value and sets the optical path of the pulse laser beam to the first optical path from when the number of pulses reaches the predetermined value to when the predetermined time ends.
Abstract:
An EUV light generation apparatus includes: a chamber; an EUV light condensing mirror positioned inside the chamber and having a reflective surface that determines a first focal point and a second focal point, the reflective surface and the second focal point being positioned on respective sides of a first surface; at least one magnet configured to generate a magnetic field at and around the first focal point; a first gas supply unit configured to supply first gas to the reflective surface in the chamber and opened near an outer peripheral part of the reflective surface; a second gas supply unit configured to supply second gas into the chamber and opened at a position between the first surface and the second focal point; and a discharge device configured to discharge gas inside the chamber and opened at a position between the first focal point and the at least one magnet.
Abstract:
An extreme ultraviolet light generating device may include a chamber, an EUV light focusing mirror provided therein, including a reflection surface having a concave curved shape and an outer peripheral portion around an outer edge of the reflection surface, and configured to focus EUV light radiated from plasma generated when a target is irradiated with laser light, a gas supplying device including peripheral heads provided on or along the outer peripheral portion; and a discharge device including a discharge path forming a discharge port near the outer peripheral portion, and configured to discharge an ion or a particle from the discharge port. The peripheral heads each may blow out a gas flow from the outer peripheral portion or a vicinity thereof along the reflection surface, and allow gas flows to join on the reflection surface to thereby form a gas flow along the reflection surface toward the discharge port.
Abstract:
A chamber device may include a chamber, and a target generation device assembled into the chamber and configured to supply a target material into the chamber, the target generation device including a tank configured to store the target material, a temperature variable device configured to vary temperature of the target material in the tank, and a nozzle section in which a nozzle hole configured to output the target material in a liquid form is formed, and the chamber device may further include a gas nozzle having an inlet port facing the nozzle section and configured to introduce gas into the chamber, a gas supply source configured to supply gas containing hydrogen to the gas nozzle to supply the gas containing the hydrogen to at least periphery of the nozzle section, and a moisture remover configured to remove moisture at least in the periphery of the nozzle section in the chamber.
Abstract:
An extreme ultraviolet light generation apparatus may be configured to generate extreme ultraviolet light by irradiating a target with a pulse laser beam outputted from a laser apparatus to generate plasma. The extreme ultraviolet light generation apparatus may include a chamber; a target supply device configured to supply a target to a plasma generation region inside the chamber; a target sensor located between the target supply device and the plasma generation region and configured to detect the target passing through a detection region; and a shield cover disposed between the detection region and the target supply device, having a through-hole that allows the target to pass through, and configured to reduce pressure waves that reach the target supply device from the plasma generation region.