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    Laser repetition rate multiplier and flat-top beam profile generators using mirrors and/or prisms
    23.
    发明授权
    Laser repetition rate multiplier and flat-top beam profile generators using mirrors and/or prisms 有权
    使用反射镜和/或棱镜的激光重复率倍增器和平顶光束轮廓发生器

    公开(公告)号：US09525265B2

    公开(公告)日：2016-12-20

    申请号：US14596738

    申请日：2015-01-14

    Applicant: KLA-Tencor Corporation

    Inventor： Yung-Ho Alex Chuang ,  Xiaoxu Lu ,  Justin Dianhuan Liou ,  J. Joseph Armstrong ,  Yujun Deng ,  John Fielden

    IPC: H01S3/10 ,  H01S3/00

    CPC classification number: H01S3/10046 ,  G03F7/70025 ,  H01S3/005 ,  H01S3/0071 ,  H01S3/08004 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/083 ,  H01S3/10 ,  H01S3/10061 ,  H01S2301/20 ,  H01S2301/203 ,  H01S2301/206

    Abstract: A repetition rate (pulse) multiplier includes one or more beam splitters and prisms forming one or more ring cavities with different optical path lengths that delay parts of the energy of each pulse. A series of input laser pulses circulate in the ring cavities and part of the energy of each pulse leaves the system after traversing the shorter cavity path, while another part of the energy leaves the system after traversing the longer cavity path, and/or a combination of both cavity paths. By proper choice of the ring cavity optical path length, the repetition rate of an output series of laser pulses can be made to be a multiple of the input repetition rate. The relative energies of the output pulses can be controlled by choosing the transmission and reflection coefficients of the beam splitters. Some embodiments generate a time-averaged output beam profile that is substantially flat in one dimension.

    Abstract translation: 重复率（脉冲）乘法器包括一个或多个分束器和棱镜，其形成具有延迟每个脉冲的能量部分的不同光程长度的一个或多个环形空腔。 一系列输入激光脉冲在环形腔中循环，并且每个脉冲的能量的一部分在穿过较短腔体路径之后离开系统，而另一部分能量在穿过较长腔体路径后离开系统，和/或组合 两个腔道。 通过适当选择环腔光程长度，激光脉冲的输出系列的重复率可以是输入重复率的倍数。 可以通过选择分束器的透射和反射系数来控制输出脉冲的相对能量。 一些实施例产生在一个维度上基本上平坦的时间平均的输出光束轮廓。

    Laser Repetition Rate Multiplier And Flat-Top Beam Profile Generators Using Mirrors And/or Prisms
    24.
    发明申请
    Laser Repetition Rate Multiplier And Flat-Top Beam Profile Generators Using Mirrors And/or Prisms 审中-公开
    激光重复率乘法器和平顶波束轮廓发生器使用镜子和/或棱镜

    公开(公告)号：US20160359292A1

    公开(公告)日：2016-12-08

    申请号：US15239268

    申请日：2016-08-17

    Applicant: KLA-Tencor Corporation

    Inventor： Yung-Ho Alex Chuang ,  Xiaoxu Lu ,  Justin Dianhuan Liou ,  J. Joseph Armstrong ,  Yujun Deng ,  John Fielden

    IPC: H01S3/10 ,  H01S3/083 ,  H01S3/08

    CPC classification number: H01S3/10046 ,  G03F7/70025 ,  H01S3/005 ,  H01S3/0071 ,  H01S3/08004 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/083 ,  H01S3/10 ,  H01S3/10061 ,  H01S2301/20 ,  H01S2301/203 ,  H01S2301/206

    Abstract: A repetition rate (pulse) multiplier includes one or more beam splitters and prisms forming one or more ring cavities with different optical path lengths that delay parts of the energy of each pulse. A series of input laser pulses circulate in the ring cavities and part of the energy of each pulse leaves the system after traversing the shorter cavity path, while another part of the energy leaves the system after traversing the longer cavity path, and/or a combination of both cavity paths. By proper choice of the ring cavity optical path length, the repetition rate of an output series of laser pulses can be made to be a multiple of the input repetition rate. The relative energies of the output pulses can be controlled by choosing the transmission and reflection coefficients of the beam splitters. Some embodiments generate a time-averaged output beam profile that is substantially flat in one dimension.

    Abstract translation: 重复率（脉冲）乘法器包括一个或多个分束器和棱镜，其形成具有延迟每个脉冲的能量部分的不同光程长度的一个或多个环形空腔。 一系列输入激光脉冲在环形腔中循环，并且每个脉冲的能量的一部分在穿过较短腔体路径之后离开系统，而另一部分能量在穿过较长腔体路径后离开系统，和/或组合 两个腔道。 通过适当选择环腔光程长度，激光脉冲的输出系列的重复率可以是输入重复率的倍数。 可以通过选择分束器的透射和反射系数来控制输出脉冲的相对能量。 一些实施例产生在一个维度上基本上平坦的时间平均的输出光束轮廓。

    External beam delivery system for laser dark-field illumination in a catadioptric optical system
    25.
    发明授权
    External beam delivery system for laser dark-field illumination in a catadioptric optical system 有权
    用于激光暗场照明的反射折射光学系统的外部光束传输系统

    公开(公告)号：US09377610B2

    公开(公告)日：2016-06-28

    申请号：US14156351

    申请日：2014-01-15

    Applicant: KLA-Tencor Corporation

    Inventor： J. Joseph Armstrong

    IPC: G02B27/02 ,  F21V7/00 ,  G02B17/00 ,  G02B17/08 ,  G02B21/08 ,  G02B21/06 ,  G02B13/18

    CPC classification number: G02B17/0856 ,  G02B13/18 ,  G02B17/0808 ,  G02B21/06 ,  G02B21/082

    Abstract: A catadioptric objective configured to inspect a specimen is provided. The catadioptric objective includes a Mangin element having one surface at a first axial location and an extension element positioned together with the Mangin element. The extension element provides a second surface at a second axial location. Certain light energy reflected from the specimen passes to the second surface of the extension element, the Mangin element, and through a plurality of lenses. An aspheric surface may be provided, and light energy may be provided to the specimen using diverting elements such as prisms or reflective surfaces.

    Abstract translation: 提供了一种用于检查样本的反折射目标。 反射折射物镜包括在第一轴向位置处具有一个表面的Mangin元件和与Mangin元件一起定位的延伸元件。 延伸元件在第二轴向位置处提供第二表面。 从样品反射的某些光能通过延伸元件的第二表面，Mangin元件，并通过多个透镜。 可以提供非球面，并且可以使用诸如棱镜或反射表面的转移元件向样本提供光能。

    Semiconductor Inspection And Metrology System Using Laser Pulse Multiplier
    26.
    发明申请
    Semiconductor Inspection And Metrology System Using Laser Pulse Multiplier 有权
    使用激光脉冲乘法器的半导体检测和计量系统

    公开(公告)号：US20150364895A1

    公开(公告)日：2015-12-17

    申请号：US14832833

    申请日：2015-08-21

    Applicant: KLA-Tencor Corporation

    Inventor： Yung-Ho Alex Chuang ,  Justin Dianhuan Liou ,  J. Joseph Armstrong ,  Yujun Deng

    IPC: H01S3/00 ,  G02B17/08 ,  G02B27/10 ,  H01S3/10

    CPC classification number: H01S3/005 ,  C23C16/00 ,  G02B17/00 ,  G02B17/0848 ,  G02B27/00 ,  G02B27/108 ,  H01S3/00 ,  H01S3/10

    Abstract: A pulse multiplier includes a beam splitter and one or more mirrors. The beam splitter receives a series of input laser pulses and directs part of the energy of each pulse into a ring cavity. After circulating around the ring cavity, part of the pulse energy leaves the ring cavity through the beam splitter and part of the energy is recirculated. By selecting the ring cavity optical path length, the repetition rate of an output series of laser pulses can be made to be a multiple of the input repetition rate. The relative energies of the output pulses can be controlled by choosing the transmission and reflection coefficients of the beam splitter. This pulse multiplier can inexpensively reduce the peak power per pulse while increasing the number of pulses per second with minimal total power loss.

    Abstract translation: 脉冲倍增器包括分束器和一个或多个反射镜。 分束器接收一系列输入激光脉冲并将每个脉冲的能量的一部分引导到环形腔中。 在环形腔周围循环后，部分脉冲能量通过分束器离开环形空腔，部分能量被再循环。 通过选择环腔光路长度，可以将输出系列激光脉冲的重复率设为输入重复率的倍数。 可以通过选择分束器的透射和反射系数来控制输出脉冲的相对能量。 该脉冲倍增器可以以最小的总功率损耗来降低每脉冲的峰值功率，同时增加每秒的脉冲数。

    193NM Laser And Inspection System
    27.
    发明申请
    193NM Laser And Inspection System 有权
    193NM激光和检测系统

    公开(公告)号：US20150155680A1

    公开(公告)日：2015-06-04

    申请号：US14586646

    申请日：2014-12-30

    Applicant: KLA-Tencor Corporation

    Inventor： Yung-Ho Chuang ,  J. Joseph Armstrong ,  Vladimir Dribinski ,  Yujun Deng ,  John Fielden

    IPC: H01S3/108

    CPC classification number: H01S3/1083 ,  G01N21/84 ,  G01N21/9501 ,  G01N21/956 ,  G01N2021/95676 ,  G02F1/3534 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/3507 ,  G02F2201/16 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/0602 ,  H01S3/067

    Abstract: A laser for generating an output wavelength of approximately 193.4 nm includes a fundamental laser, an optical parametric generator, a fourth harmonic generator, and a frequency mixing module. The optical parametric generator, which is coupled to the fundamental laser, can generate a down-converted signal. The fourth harmonic generator, which may be coupled to the optical parametric generator or the fundamental laser, can generate a fourth harmonic. The frequency mixing module, which is coupled to the optical parametric generator and the fourth harmonic generator, can generate a laser output at a frequency equal to a sum of the fourth harmonic and twice a frequency of the down-converted signal.

    Abstract translation: 用于产生约193.4nm的输出波长的激光器包括基本激光器，光参量发生器，第四谐波发生器和混频模块。 耦合到基本激光器的光学参数发生器可以产生下变频信号。 可以耦合到光学参数发生器或基本激光器的第四谐波发生器可以产生四次谐波。 耦合到光参量发生器和第四谐波发生器的混频模块可产生频率等于下变频信号频率的四次谐波和两倍的频率的激光输出。

    Solid state illumination source and inspection system
    28.
    发明授权
    Solid state illumination source and inspection system 有权
    固态照明源和检测系统

    公开(公告)号：US09042006B2

    公开(公告)日：2015-05-26

    申请号：US14022190

    申请日：2013-09-09

    Applicant: KLA-Tencor Corporation

    Inventor： J. Joseph Armstrong

    IPC: H01S3/10 ,  H01S3/109 ,  H01S3/23 ,  H01S3/30 ,  G01N21/95 ,  G01N21/88 ,  H01S3/067 ,  H01S3/094 ,  G01N21/956

    CPC classification number: H01S3/10 ,  G01N21/8806 ,  G01N21/9501 ,  G01N2021/95676 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/109 ,  H01S3/2316 ,  H01S3/302 ,  H01S2301/02

    Abstract: An exemplary illumination source for an inspection system includes a pulsed seed laser having a wavelength of approximately 1104 nm and a continuous wave, Raman seed laser having a wavelength of approximately 1160 nm. An optical coupler can combine outputs of the pulsed seed laser and the continuous wave, Raman seed laser. Pre-amplification stages can receive an output of the optical coupler. A power amplifier can receive an output of the pre-amplification stages. A sixth harmonic can be generated using the amplified, combined wavelength. Systems for inspecting a specimen such as a reticle, photomask or wafer can include one of the illumination sources described herein.

    Abstract translation: 用于检查系统的示例性照明源包括具有约1104nm的波长的脉冲种子激光器和具有约1160nm的波长的连续波拉曼种子激光器。 光耦合器可以组合脉冲种子激光器和连续波拉曼种子激光器的输出。 预放大级可以接收光耦合器的输出。 功率放大器可以接收预放大级的输出。 可以使用放大的组合波长产生六次谐波。 用于检查诸如掩模版，光掩模或晶片的样本的系统可以包括本文所述的照明源之一。

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