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    • 2. 发明申请
    • LASER APPARATUS
    • 激光装置
    • US20120236884A1
    • 2012-09-20
    • US13421116
    • 2012-03-15
    • Junichi FUJIMOTOTakahito KUMAZAKIToru SUZUKISatoshi TANAKAOsamu WAKABAYASHI
    • Junichi FUJIMOTOTakahito KUMAZAKIToru SUZUKISatoshi TANAKAOsamu WAKABAYASHI
    • H01S3/10
    • H01S3/106H01S3/005H01S3/08004H01S3/08009H01S3/08036H01S3/0971H01S3/2316H01S3/2333
    • This disclosure is directed to widen an adjustable range of the spectral linewidth of laser light output from a laser apparatus. This laser apparatus may include: (1) an excitation source configured to excite a laser medium in a laser gain space, (2) an optical resonator including an output coupler arranged on one side of an optical path through the laser gain space and a wavelength dispersion element arranged on the other side of the optical path through the laser gain space, and (3) a switching mechanism configured to switch a beam-width magnification or reduction factor by placing or removing at least one beam-width change optical system for expanding or reducing a beam width in or from an optical path between the laser gain space and the wavelength dispersion element or by inverting orientation of the at least one beam-width change optical system in the optical path.
    • 本公开旨在扩大从激光设备输出的激光的谱线宽度的可调范围。 该激光装置可以包括:(1)激励源,被配置为在激光增益空间中激发激光介质,(2)光学谐振器,包括布置在通过激光增益空间的光路的一侧上的输出耦合器,以及波长 通过激光增益空间布置在光路的另一侧的色散元件,以及(3)配置为通过放置或去除至少一个用于扩展的光束宽度改变光学系​​统来切换光束宽度放大率或缩小因子的切换机构 或者减小激光增益空间和波长色散元件之间的光路中的光束宽度,或者通过使光路中的至少一个光束宽度改变光学系​​统的取向反转。
    • 5. 发明申请
    • GAS DISCHARGE CHAMBER
    • 气体放电室
    • US20110158281A1
    • 2011-06-30
    • US12899886
    • 2010-10-07
    • Shinji NAGAIFumika YOSHIDAOsamu WAKABAYASHIKouji KAKIZAKI
    • Shinji NAGAIFumika YOSHIDAOsamu WAKABAYASHIKouji KAKIZAKI
    • H01S3/034
    • H01S3/034G02B1/02G02B5/3091H01S3/0346H01S3/08054H01S3/0816H01S3/225H01S3/2251
    • A gas discharge chamber that uses a calcium fluoride crystal which reduces a breakage due to mechanical stress (window holder and laser gas pressure), thermal stress from light absorption, and the like, increases the degree of linear polarization of output laser, and suppresses degradation due to strong ultraviolet (ArF, in particular) laser light irradiation. A first window (2) and a second window (3) of the gas discharge chamber have an incident plane and an emitting plane in parallel with a (111) crystal plane of their calcium fluoride crystal. With respect to an arrangement where laser light entering the calcium fluoride crystal passes through a plane including a axis and a axis of each of the first window (2) and the second window (3) as seen from inside the chamber (1), the first window (2) and the second window (3) are arranged in positions rotated in the same direction by the same angle about their axis.
    • 使用减少由于机械应力(窗口保持器和激光气体压力)的破裂的氟化钙晶体,来自光吸收等的热应力的气体放电室增加了输出激光器的线性极化的程度,并抑制了劣化 由于强紫外线(特别是ArF)激光照射。 气体放电室的第一窗口(2)和第二窗口(3)具有与其氟化钙晶体的(111)晶面平行的入射面和发射平面。 关于进入氟化钙晶体的激光通过包括第一窗口(2)和第二窗口(3)中的每一个的<111>轴和<001>轴的平面的布置,从内侧看 室(1),第一窗口(2)和第二窗口(3)被布置在围绕其<111>轴线沿相同方向旋转相同角度的位置。
    • 6. 发明申请
    • EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS
    • 极光紫外线发光装置
    • US20120267553A1
    • 2012-10-25
    • US13540314
    • 2012-07-02
    • Shinji NAGAITamotsu ABETakanobu ISHIHARAOsamu WAKABAYASHI
    • Shinji NAGAITamotsu ABETakanobu ISHIHARAOsamu WAKABAYASHI
    • G21K5/00
    • H05G2/003G01J3/10G03F7/70033H05G2/005H05G2/008
    • An extreme ultraviolet light generation apparatus used in combination with a laser system, the apparatus may include: a chamber provided with at least one inlet port for introducing a laser beam outputted from the laser system into the chamber; a target supply unit provided to the chamber for supplying a target material to a predetermined region inside the chamber, where the target material is irradiated with the laser beam; at least one optical element disposed inside the chamber; a magnetic field generation unit for generating a magnetic field around the predetermined region; an ion collection unit disposed in a direction of a line of magnetic force of the magnetic field for collection an ion which is generated when the target material is irradiated with the laser beam and is flowing along the line of magnetic force; and a gas introduction unit for introducing an etching gas into the chamber.
    • 一种与激光系统组合使用的极紫外光发生装置,该装置可以包括:设置有至少一个入口的腔室,用于将从激光系统输出的激光束引入腔室; 目标供给单元,其设置在所述室中,用于将所述目标材料供给到所述室内的预定区域,所述目标材料用所述激光束照射; 设置在所述室内的至少一个光学元件; 用于产生围绕预定区域的磁场的磁场产生单元; 离子收集单元,设置在所述磁场的磁力线的方向上,用于收集当所述靶材料被所述激光束照射并沿着所述磁力线流动时产生的离子; 以及用于将蚀刻气体引入到室中的气体引入单元。
    • 9. 发明申请
    • LASER APPARATUS AND METHOD OF CONTROLLING LASER APPARATUS
    • 激光装置和控制激光装置的方法
    • US20150139258A1
    • 2015-05-21
    • US14602208
    • 2015-01-21
    • Hiroaki TSUSHIMAOsamu WAKABAYASHITakashi MATSUNAGA
    • Hiroaki TSUSHIMAOsamu WAKABAYASHITakashi MATSUNAGA
    • H01S3/097
    • H01S3/09702H01S3/0014H01S3/08009H01S3/09705H01S3/0971H01S3/2366
    • A laser apparatus according to embodiment may include: a laser chamber filled with a laser gain medium; a pair of electrodes disposed in the laser chamber; a charger configured to apply a charge voltage for causing a discharge to occur between the pair of the electrodes; a pulse power module configured to covert the charge voltage applied by the charger into a short pulsed voltage, and apply the short pulsed voltage between the pair of the electrodes; and a controller configured to calculate input energies Ein applied to the pair of the electrodes based on the charge voltage, calculate an integration value Einsum of the input energies Ein by integrating the calculated input energies Ein, and determine whether the integration value Einsum exceeds an integration lifetime value Einsumlife of input energy or not.
    • 根据实施例的激光装置可以包括:填充有激光增益介质的激光室; 设置在激光室中的一对电极; 充电器,被配置为施加用于在所述一对电极之间发生放电的充电电压; 脉冲功率模块,被配置为将由充电器施加的充电电压转换成短脉冲电压,并且在一对电极之间施加短脉冲电压; 以及控制器,被配置为基于所述充电电压来计算施加到所述一对电极的输入能量Ein,通过对所计算的输入能量Ein进行积分来计算输入能量Ein的积分值Einsum,并且确定积分值Einsum是否超过积分 输入能量的寿命值Einsumlife。