Abstract:
A system (11A) for generating extreme ultraviolet light, in which a target material (27) inside a chamber (2A) is irradiated with a laser beam to be turned into plasma, includes a first laser apparatus (40) configured to output a first laser beam (41), a second laser apparatus (3A) configured to output a second laser beam having a pedestal and a peak portion, and a controller (5A)connected to the first and second laser apparatuses and configured to cause the first laser beam to be outputted first, the pedestal to be outputted after the first laser beam, and the peak portion having higher energy than the pedestal to be outputted after the pedestal.
Abstract:
A laser apparatus may include a seed laser device configured to output a pulse laser beam, a pulse energy adjusting unit configured to vary pulse energy of the pulse laser beam, at least one amplifier for amplifying the pulse laser beam, at least one power source for varying an excitation intensity in the at least one amplifier, and a controller configured to control the pulse energy adjusting unit on a pulse-to-pulse basis for the pulse laser beam passing therethrough and to control the at least one power source for a group of multiple pulses of the pulse laser beam.
Abstract:
An extreme ultraviolet light generation system used with a laser apparatus may be provided, and the extreme ultraviolet light generation system may include: a chamber including at least one window for at least one laser beam and a target supply unit for supplying a target material into the chamber; and at least one polarization control unit, provided on a laser beam path, for controlling a polarization state of the at least one laser beam.
Abstract:
A regenerative amplifier (20) according to one aspect of this disclosure is used in combination with a laser device, and the regenerative amplifier may include: a pair of resonator mirrors (21a, 21b) constituting an optical resonator; a C02 slab amplifier (25) provided between the pair of the resonator mirrors for amplifying a laser beam with a predetermined wavelength outputted from the laser device; and an optical system (26, 27) disposed to configure a multipass optical path (C2) along which the laser beam is reciprocated inside the slab amplifier, the optical system transferring an optical image of the laser beam at a first position (la) as an optical image of the laser beam at a second position (lb).
Abstract:
A device is provided for controlling a laser beam. The device may include a first wavefront adjuster (81) provided in a beam path of a laser beam outputted from a laser apparatus (3), a beam delivery unit (50) provided in a beam path of the laser beam from the first wavefront adjuster, a second wavefront adjuster (82) provided in a beam path of the laser beam from the beam delivery unit, a beam monitor (57) provided in a beam path of the laser beam from the second wavefront adjuster, and a controller (58) configured to control the first and second wavefront adjusters based on a detection result of the beam monitor. An extreme ultraviolet light apparatus including the device is also provided.
Abstract:
A laser apparatus for generating extreme ultraviolet (EUV) light at a wavelength of approximately 13 nm is provided. The laser apparatus may be combined with a reduced projection reflective optical system. Systems and methods for generating EUV light are also provided.
Abstract:
A laser apparatus may include a master oscillator configured to output a laser beam, at least one amplifier disposed in a beam path of the laser beam from the master oscillator, at least one power source for applying a high-frequency voltage to the at least one amplifier, and a controller for varying the high-frequency voltage to be applied to the at least one amplifier from the at least one power source.
Abstract:
A mirror device may include: a mirror including a base plate, a reflective film on a first surface of the base plate, and a plurality of first protrusions on a second surface of the base plate; a plurality of support parts for respectively supporting the plurality of the first protrusions, each support part having a groove formed therein for guiding the first protrusion; and a plurality of clamps for respectively pressing the plurality of the first protrusions against the respective grooves in the plurality of the support parts.
Abstract:
An optical device ( 100 ) may include a mirror ( 30 ) for respectively reflecting and transmitting parts of a first laser beam ( L2 ) as first reflected and first transmitted beams, and for respectively transmitting and reflecting parts of a second laser beam ( L3 ) as second transmitted and second reflected beams; an optical system disposed so that the first and second laser beams are such that beam paths of the first transmitted and second reflected beams are parallel or substantially coincide, or such that beam paths of the first reflected and second transmitted beams are parallel or substantially coincide; first and second measuring units (D31; D32 ) configured to respectively measure a beam parameter of the first transmitted or first reflected beams, and of the second reflected or second transmitted beams; and first and second adjusting units ( 11; 21 ) configured to adjust the first and second laser beams based on measurement results by the measuring units.
Abstract:
An EUV light generation system (100) includes a driver laser (101) comprising a master oscillator (10) such as a semiconductor laser, a spatial filter (20), gas slab amplification devices (30a, 30b), relay optical systems (R1-R4), and high-speed axial -flow amplifiers (MA1, MA2). The slab amplification devices include beam adjusting optical units (31, 32) disposed, respectively, at input and output sides of the slab amplifiers SA to convert the beam profile and/or polarization direction of the laser beam such that the polarization direction and/or an elongated direction of the beam profile within the slab amplifiers is parallel to a free space axis AF of the slab waveguides, i.e. parallel to the discharge electrodes (331, 332).