摘要:
A chamber apparatus used with an external apparatus having an obscuration region may include: a chamber in which extreme ultraviolet light is generated; a collector mirror provided in the chamber for collecting the extreme ultraviolet light; a support for securing the collector mirror to the chamber; and an output port provided to the chamber for allowing the extreme ultraviolet light collected by the collector mirror to be introduced therethrough into the external apparatus.
摘要:
A mirror is provided which may include: a substrate; a thermal diffusion layer provided on a principal surface of the substrate, the thermal diffusion layer having a higher thermal conductivity than the substrate; and a reflective layer provided on the thermal diffusion layer, the reflective layer having a lower thermal conductivity than the thermal diffusion layer.
摘要:
An EUV light source apparatus capable of easily detecting deterioration etc. of a window of an EUV light generating chamber. The EUV light source apparatus includes a driver laser, an EUV light generating chamber, a window which passes the laser beam into the EUV light generating chamber, an EUV light collector mirror, laser beam focusing optics which focuses a laser beam onto a trajectory of a target material, a temperature sensor which detects a temperature of the window, and a laser beam optics deterioration determination processing unit which determines deterioration of the window based on the temperature of the window detected by the temperature sensor when extreme ultra violet light is generated.
摘要:
The higher efficiency and lower power consumption are realized in a laser system for generating a high-power short-pulse laser beam. The laser system includes a laser oscillator for generating a pulse laser beam by laser oscillation, plural amplifiers for sequentially inputting the pulse laser beam generated by the laser oscillator and amplifying the pulse laser beam, and a control unit for controlling the laser oscillator to perform burst oscillation and halting an amplification operation of at least one of the plural amplifiers in a burst halt period between burst oscillation periods.
摘要:
The invention relates to a two-stage laser system well fit for semiconductor aligners, which is reduced in terms of spatial coherence while taking advantage of the high stability, high output efficiency and fine line width of the MOPO mode. The two-stage laser system for aligners comprises an oscillation-stage laser (50) and an amplification-stage laser (60). Oscillation laser light having divergence is used as the oscillation-stage laser (50), and the amplification-stage laser (60) comprises a Fabry-Perot etalon resonator made up of an input side mirror (1) and an output side mirror (2). The resonator is configured as a stable resonator.
摘要:
A charging voltage Vosc applied to a main capacitor C0 disposed in an oscillating high-voltage pulse generator 12 of an oscillating laser 100 is subject to constant control such that a pulse energy Posc of the oscillating laser 100 becomes a lower limit energy Es0 or more of an amplification saturation region. And, a charging voltage Vamp applied to a main capacitor C0 disposed in an amplifying high-voltage pulse generator 32 of an amplifying laser 300 is controlled, and pulse energy Pamp of the amplifying laser 300 is determined as target energy Patgt. Thus, the pulse energy of a two-stage laser is controlled to stabilize the pulse energy.
摘要:
The present invention relates to a two stage laser system in which a desired spectral line width can be obtained at high output even when the integrated spectral characteristic of oscillator laser does not have the desired spectral line width, comprising an oscillator laser device 10 which has discharge electrodes 2 within a laser chamber 1 filled with laser gas containing F2 and emits laser beam which is band-narrowed by means of a band narrowing module 3 arranged in a laser resonator, and an amplifier laser device 20 which has discharge electrodes 2 within a laser chamber 1 filled with laser gas containing F2 and amplifies laser pulse injected from said oscillator laser device 10. In the system, a synchronous time interval having a predetermined spectral line width exists in laser pulse from the oscillator laser 10, and the system is set such that a discharge occurs in the amplifier laser 20 within the synchronous time interval.
摘要:
A buffer gas contained in a laser gas used for an ArF excimer laser mainly consists of He, and Xe is preferably added to the laser gas. Mixture piping divided by valves is disposed on piping running from a chamber to an excimer laser gas cylinder, the mixture piping and a Xe gas cylinder are connected, gas exhaust by a gas exhaust module and opening and closing of the valves are controlled by a gas controller to add a trace quantity of xenon gas to the excimer laser gas. Thus, to remedy a burst characteristic and a spike characteristic of the ultraviolet laser device by adding a trace quantity of xenon gas, the xenon gas can be supplied efficiently into the chamber without modifying existing laser gas supply equipment.
摘要:
A spectrometer has higher resolving power without enlarging a size of the apparatus. This spectrometer has a slit board, a mirror, a collimator lens, a holographic grating, an Echelle grating, a magnifier lens and a line sensor. The holographic grating is arranged to diffract parallel light incident from the collimator lens toward the Echelle grating. The Echelle grating is arranged to reflect the parallel light incident from the holographic grating toward the holographic grating.
摘要:
A light that radiates in the wavelength region of a narrowband laser beam is generated, this light is converted to a collimated beam after passing through a slit, and the converted light is incident on a narrowband module. The outputted light from the narrowband module is condensed, and this condensed light is incident on a light detector. A total reflection mirror is provided in a removable manner on the optical path in front of the narrowband module, the ratio between the output of the light detector in a state in which the total reflection mirror is provided on the optical path, and the output of the light detector in a state in which the total reflection mirror is removed, is determined, and the narrowband efficiency of the above-mentioned narrowband module is inspected based on the determined ratio.