METHOD AND APPARATUS FOR LASER CONTROL IN A TWO CHAMBER GAS DISCHARGE LASER
    1.
    发明公开
    METHOD AND APPARATUS FOR LASER CONTROL IN A TWO CHAMBER GAS DISCHARGE LASER 审中-公开
    方法和装置的激光控制在两钱伯斯气体喷出LASER

    公开(公告)号:EP2351170A1

    公开(公告)日:2011-08-03

    申请号:EP09822307.6

    申请日:2009-10-20

    申请人: Cymer, Inc.

    IPC分类号: H01S3/13

    摘要: A laser control system contains an oscillator gas chamber and an amplifier gas chamber. A first voltage input is operatively connected to deliver electrical pulses to a first pair of electrodes within the oscillator gas chamber and a second pair of electrodes within the amplifier gas chamber. An output of the gas chambers is an energy dose calculated by a trapezoidal window. A control circuit connects to the first voltage input for modifying the first voltage input. A feedback control loop communicates an output of the gas chambers to the control circuit for modifying the first voltage input.

    METHOD AND APPARATUS FOR STABILIZING AND TUNING THE BANDWIDTH OF LASER LIGHT
    2.
    发明公开
    METHOD AND APPARATUS FOR STABILIZING AND TUNING THE BANDWIDTH OF LASER LIGHT 审中-公开
    方法和设备用于稳定和调节激光的带宽

    公开(公告)号:EP2137798A2

    公开(公告)日:2009-12-30

    申请号:EP08742695.3

    申请日:2008-04-09

    IPC分类号: H01S3/22

    摘要: According to aspects of an embodiment of the disclosed subject matter, method and apparatus are disclose that ma y comprise adjusting a differential timing between gas discharges in the seed laser and amplifier laser for bandwidth control, based on the error signal, or for control of another laser operating parameter other than bandwidth, without utilizing any beam magnification control, or adjusting a differential timing between gas discharges in the seed laser and amplifier laser for bandwidth control, based on the error signal, or for control of another laser operating parameter other than bandwidth, while utilizing beam magnification control for other than bandwidth control, and adjusting a differential timing between gas discharges in the seed laser and amplifier laser for bandwidth control, based on the error signal, or for control of another laser operating parameter other than bandwidth, while utilizing beam magnification control for bandwidth control based on the error signal.

    ACTIVE SPECTRAL CONTROL OF DUV LIGHT SOURCE
    7.
    发明公开
    ACTIVE SPECTRAL CONTROL OF DUV LIGHT SOURCE 有权
    DUV光源的主动光谱控制

    公开(公告)号:EP1994549A2

    公开(公告)日:2008-11-26

    申请号:EP07716893.8

    申请日:2007-01-22

    申请人: Cymer, Inc.

    IPC分类号: H01L21/00

    摘要: According to aspects of an embodiment of the disclosed subject matter, a line narrowed high average power high pulse repetition laser micro-photolithography light source bandwidth control method and apparatus are disclosed which may comprise a bandwidth metrology module measuring the bandwidth of a laser output light pulse beam pulse produced by the light source and providing a bandwidth measurement; a bandwidth error signal generator receiving the bandwidth measurement and a bandwidth setpoint and providing a bandwidth error signal; an active bandwidth controller providing a fine bandwidth correction actuator signal and a coarse bandwidth correction actuator signal responsive to the bandwidth error. The fine bandwidth correction actuator and the coarse bandwidth correction actuator each may induce a respective modification of the light source behavior that reduces bandwidth error. The coarse and fine bandwidth correction actuators each may comprise a plurality of bandwidth correction actuators.

    摘要翻译: 根据所公开主题的实施例的多个方面,公开了一种线窄化高平均功率高脉冲重复激光微光刻光源带宽控制方法和装置,其可以包括带宽度量模块,其测量激光输出光脉冲 由光源产生并提供带宽测量的光束脉冲; 带宽误差信号发生器,接收带宽测量值和带宽设定值并提供带宽误差信号; 有源带宽控制器,响应带宽误差提供精细带宽校正致动器信号和粗带宽校正致动器信号。 细带宽校正致动器和粗带宽校正致动器各自可以引起光源行为的相应修改,这减少了带宽误差。 粗和细带宽校正致动器均可以包括多个带宽校正致动器。