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公开(公告)号：US20070001130A1
公开(公告)日：2007-01-04
申请号：US11174443
申请日：2005-06-29
申请人： Alexander Bykanov , J. Algots , Oleh Khodykin , Oscar Hemberg
发明人： Alexander Bykanov , J. Algots , Oleh Khodykin , Oscar Hemberg
IPC分类号： G21G4/00
CPC分类号： H05G2/001
摘要： An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing optical element having a first range of operating center wavelengths; a droplet detection radiation source having a second range of operating center wavelengths; a drive laser steering element comprising a material that is highly reflective within at least some part of the first range of wavelengths and highly transmissive within at least some part of the second range of center wavelengths; a droplet detection radiation aiming mechanism directing the droplet detection radiation through the drive laser steering element and the lens to focus at a selected droplet detection position intermediate the droplet generator and the irradiation site. The apparatus and method may further comprise a droplet detection mechanism that may comprise a droplet detection radiation detector positioned to detect droplet detection radiation reflected from a plasma source material droplet.
摘要翻译： 公开了一种EUV发光系统和方法，其可以包括产生等离子体源材料的液滴发生器，目标液滴朝向等离子体源材料目标照射位置附近行进; 驱动激光器 具有第一操作中心波长范围的驱动激光聚焦光学元件; 具有第二操作中心波长范围的液滴检测辐射源; 驱动激光操纵元件，其包括在第一波长范围的至少一部分内具有高度反射性的材料，并且在第二中心波长范围的至少一部分内具有高度透射性; 液滴检测辐射瞄准机构，其引导液滴检测辐射通过驱动激光转向元件和透镜，以聚焦在液滴发生器和照射部位之间的选定液滴检测位置。 该装置和方法还可以包括液滴检测机构，其可以包括液滴检测放射线检测器，其被定位成检测从等离子体源物质液滴反射的液滴检测辐射。
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公开(公告)号：US20080179549A1
公开(公告)日：2008-07-31
申请号：US12075631
申请日：2008-03-12
IPC分类号： G01J3/02
CPC分类号： H05G2/001
摘要： An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing optical element having a first range of operating center wavelengths; a droplet detection radiation source having a second range of operating center wavelengths; a drive laser steering element comprising a material that is highly reflective within at least some part of the first range of wavelengths and highly transmissive within at least some part of the second range of center wavelengths; a droplet detection radiation aiming mechanism directing the droplet detection radiation through the drive laser steering element and the lens to focus at a selected droplet detection position intermediate the droplet generator and the irradiation site.
摘要翻译： 公开了一种EUV发光系统和方法，其可以包括产生等离子体源材料的液滴发生器，目标液滴朝向等离子体源材料目标照射位置附近行进; 驱动激光器 具有第一操作中心波长范围的驱动激光聚焦光学元件; 具有第二操作中心波长范围的液滴检测辐射源; 驱动激光操纵元件，其包括在第一波长范围的至少一部分内具有高度反射性的材料，并且在第二中心波长范围的至少一部分内具有高度透射性; 液滴检测辐射瞄准机构，其引导液滴检测辐射通过驱动激光转向元件和透镜，以聚焦在液滴发生器和照射部位之间的选定液滴检测位置。
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公开(公告)号：US07372056B2
公开(公告)日：2008-05-13
申请号：US11174443
申请日：2005-06-29
CPC分类号： H05G2/001
摘要： An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing optical element having a first range of operating center wavelengths; a droplet detection radiation source having a second range of operating center wavelengths; a drive laser steering element comprising a material that is highly reflective within at least some part of the first range of wavelengths and highly transmissive within at least some part of the second range of center wavelengths; a droplet detection radiation aiming mechanism directing the droplet detection radiation through the drive laser steering element and the lens to focus at a selected droplet detection position intermediate the droplet generator and the irradiation site. The apparatus and method may further comprise a droplet detection mechanism that may comprise a droplet detection radiation detector positioned to detect droplet detection radiation reflected from a plasma source material droplet.
摘要翻译： 公开了一种EUV发光系统和方法，其可以包括产生等离子体源材料的液滴发生器，目标液滴朝向等离子体源材料目标照射位置附近行进; 驱动激光器 具有第一操作中心波长范围的驱动激光聚焦光学元件; 具有第二操作中心波长范围的液滴检测辐射源; 驱动激光操纵元件，其包括在第一波长范围的至少一部分内具有高度反射性的材料，并且在第二中心波长范围的至少一部分内具有高度透射性; 液滴检测辐射瞄准机构，其引导液滴检测辐射通过驱动激光转向元件和透镜，以聚焦在液滴发生器和照射部位之间的选定液滴检测位置。 该装置和方法还可以包括液滴检测机构，其可以包括液滴检测放射线检测器，其被定位成检测从等离子体源物质液滴反射的液滴检测辐射。
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公开(公告)号：US20060289806A1
公开(公告)日：2006-12-28
申请号：US11168785
申请日：2005-06-28
申请人： Rodney Simmons , John Viatella , Jerzy Hoffman , R. Webb , Alexander Bykanov , Oleh Khodykin
发明人： Rodney Simmons , John Viatella , Jerzy Hoffman , R. Webb , Alexander Bykanov , Oleh Khodykin
IPC分类号： G21G4/00
CPC分类号： H05G2/001
摘要： A laser produced plasma (“LPP”) extreme ultraviolet (“EUV”) light source and method of operating same is disclosed which may comprise an EUV plasma production chamber having a chamber wall; a drive laser entrance window in the chamber wall; a drive laser entrance enclosure intermediate the entrance window and a plasma initiation site within the chamber and comprising an entrance enclosure distal end opening; at least one aperture plate intermediate the distal opening and the entrance window comprising at least one drive laser passage aperture. The at least one aperture plate may comprise at least two aperture plates comprising a first aperture plate and a second aperture plate defining an aperture plate interim space. The at least one drive laser aperture passage may comprise at least two drive laser aperture passages. The laser passage aperture may define an opening large enough to let the drive laser beam pass without attenuation and small enough to substantially reduce debris passing through the laser passage aperture in the direction of the entrance window.
摘要翻译： 公开了一种激光产生的等离子体（“LPP”）极紫外（“EUV”）光源及其操作方法，其可以包括具有室壁的EUV等离子体生产室; 在室壁中的驱动激光入口窗口; 在入口窗口中间的驱动激光入口外壳和腔室内的等离子体起始位置，并且包括入口外壳远端开口; 在远端开口和入口窗之间的至少一个孔板包括至少一个驱动激光通道孔。 至少一个孔板可以包括至少两个孔板，其包括限定孔板中间空间的第一孔板和第二孔板。 至少一个驱动激光孔通道可以包括至少两个驱动激光孔通道。 激光通道孔可以限定足够大的开口，使得驱动激光束通过而不衰减，并且足够小以基本上减少通过入口窗口方向的穿过激光通道孔的碎屑。
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公开(公告)号：US20070001131A1
公开(公告)日：2007-01-04
申请号：US11174299
申请日：2005-06-29
IPC分类号： G01J1/00
摘要： An apparatus and method is disclosed which may comprise a laser produced plasma EUV system which may comprise a drive laser producing a drive laser beam; a drive laser beam first path having a first axis; a drive laser redirecting mechanism transferring the drive laser beam from the first path to a second path, the second path having a second axis; an EUV collector optical element having a centrally located aperture; and a focusing mirror in the second path and positioned within the aperture and focusing the drive laser beam onto a plasma initiation site located along the second axis. The apparatus and method may comprise the drive laser beam is produced by a drive laser having a wavelength such that focusing on an EUV target droplet of less than about 100 μm at an effective plasma producing energy if not practical in the constraints of the geometries involved utilizing a focusing lens. The drive laser may comprise a CO2 laser. The drive laser redirecting mechanism may comprise a mirror.
摘要翻译： 公开了一种可以包括激光产生等离子体EUV系统的装置和方法，其可以包括产生驱动激光束的驱动激光器; 具有第一轴的驱动激光束第一路径; 驱动激光重定向机构，其将所述驱动激光束从所述第一路径传递到第二路径，所述第二路径具有第二轴线; 具有中心定位的孔的EUV收集器光学元件; 以及在第二路径中的聚焦反射镜并且定位在孔内并将驱动激光束聚焦到沿着第二轴线定位的等离子体起始位置。 该装置和方法可以包括驱动激光束由具有波长的驱动激光器产生，该激光器具有在有效等离子体产生能量的情况下聚焦在小于约100mum的EUV目标液滴上，如果在所涉及的几何形状的约束条件下 聚焦镜头。 驱动激光器可以包括CO 2激光器。 驱动激光重定向机构可以包括镜子。
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公开(公告)号：US20080179548A1
公开(公告)日：2008-07-31
申请号：US11786145
申请日：2007-04-10
申请人： Alexander Bykanov , Norbert Bowering , Igor Fomenkov , David Brandt , Alexander Ershov , Oleh Khodykin , William Partlo
发明人： Alexander Bykanov , Norbert Bowering , Igor Fomenkov , David Brandt , Alexander Ershov , Oleh Khodykin , William Partlo
IPC分类号： H05H1/24
CPC分类号： G03F7/70916 , B82Y10/00 , G03F7/70033 , G03F7/70908 , G03F7/70983 , H05G2/003 , H05G2/008
摘要： A device is disclosed which may comprise a system generating a plasma at a plasma site, the plasma producing EUV radiation and ions exiting the plasma. The device may also include an optic, e.g., a multi-layer mirror, distanced from the site by a distance, d, and a flowing gas disposed between the plasma and optic, the gas establishing a gas pressure sufficient to operate over the distance, d, to reduce ion energy below a pre-selected value before the ions reach the optic. In one embodiment, the gas may comprise hydrogen and in a particular embodiment, the gas may comprise greater than 50 percent hydrogen by volume.
摘要翻译： 公开了一种可以包括在等离子体位置处产生等离子体的系统，等离子体产生EUV辐射和离开等离子体的离子的装置。 该装置还可以包括一个光学元件，例如多个远离现场的多层反射镜，以及设置在等离子体和光学元件之间的流动气体，该气体建立足以在该距离上操作的气体压力， d，在离子到达光学器件之前，将离子能量降低到预先选定的值以下。 在一个实施方案中，气体可以包含氢气，并且在一个具体实施方案中，气体可以包含大于50体积％的氢气。
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公开(公告)号：US20060255298A1
公开(公告)日：2006-11-16
申请号：US11358988
申请日：2006-02-21
申请人： Alexander Bykanov , Oleh Khodykin
发明人： Alexander Bykanov , Oleh Khodykin
IPC分类号： G01J3/10
摘要： A method for generating EUV light is disclosed which may include the acts/steps of providing a source material; generating a plurality of source material droplets; simultaneously irradiating a plurality of source material droplets with a first light pulse to create irradiated source material; and thereafter exposing the irradiated source material to a second light pulse to generate EUV light, e.g. by generating a plasma of the source material. In another aspect, an EUV light source may include a droplet generator delivering a plurality of source material droplets to a target volume; a source of a first light pulse for simultaneously irradiating a plurality of droplets in the target volume to produce an irradiated source material; and a source of a second light pulse for exposing the irradiated source material to generate EUV light. The droplet generator may comprise a non-modulating droplet generator and may comprise a multi-orifice nozzle.
摘要翻译： 公开了一种用于产生EUV光的方法，其可以包括提供源材料的动作/步骤; 产生多个源材料液滴; 同时用第一光脉冲照射多个源材料液滴以产生辐射源材料; 然后将照射的源材料暴露于第二光脉冲以产生EUV光，例如， 通过产生源材料的等离子体。 在另一方面，EUV光源可以包括将多个源材料液滴输送到目标体积的液滴发生器; 用于同时照射目标体积中的多个液滴的第一光脉冲源，以产生照射的源材料; 以及第二光脉冲源，用于曝光照射的源材料以产生EUV光。 液滴发生器可以包括非调节液滴发生器，并且可以包括多孔喷嘴。
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8.发明申请SYSTEMS FOR PROTECTING INTERNAL COMPONENTS OF AN EUV LIGHT SOURCE FROM PLASMA-GENERATED DEBRIS 有权用于保护来自等离子体生物反应器的EUV光源的内部组分的系统公开(公告)号：US20060192151A1
公开(公告)日：2006-08-31
申请号：US11067099
申请日：2005-02-25
申请人： Norbert Bowering , Bjorn Hansson , Alexander Bykanov , Oleh Khodykin , Alexander Ershov , William Partlo
发明人： Norbert Bowering , Bjorn Hansson , Alexander Bykanov , Oleh Khodykin , Alexander Ershov , William Partlo
IPC分类号： G01J1/00
CPC分类号： G03F7/70925 , B82Y10/00 , G03F7/70033 , G03F7/70166 , G03F7/70916 , G21K2201/06 , H05G2/001
摘要： Systems and methods are disclosed for protecting an EUV light source plasma production chamber optical element surface from debris generated by plasma formation. In one aspect of an embodiment of the present invention, a shield is disclosed which comprises at least one hollow tube positioned between the optical element and a plasma formation site. The tube is oriented to capture debris while allowing light to pass through the tube's lumen via reflection at relatively small angles of grazing incidence. In another aspect of an embodiment of the present invention, a shield is disclosed which is heated to a temperature sufficient to remove one or more species of debris material that has deposited on the shield. In yet another aspect of an embodiment of the present invention, a system is disclosed which a shield is moved from a light source plasma chamber to a cleaning chamber where the shield is cleaned.
摘要翻译： 公开了用于保护EUV光源等离子体生产室光学元件表面免受等离子体形成产生的碎片的系统和方法。 在本发明的实施例的一个方面，公开了一种屏蔽件，其包括位于光学元件和等离子体形成部位之间的至少一个中空管。 管被定向以捕获碎片，同时允许光以相对较小的掠入射角度的反射通过管的内腔。 在本发明的一个实施例的另一方面，公开了一种屏蔽件，其被加热到足以去除沉积在屏蔽上的一种或多种碎屑材料的温度。 在本发明的一个实施例的另一方面，公开了一种系统，其将屏蔽件从光源等离子体室移动到清洁室，其中屏蔽件被清洁。
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公开(公告)号：US20060249699A1
公开(公告)日：2006-11-09
申请号：US11406216
申请日：2006-04-17
IPC分类号： G01J3/10
摘要： An EUV light source is disclosed which may comprise at least one optical element having a surface, such as a multi-layer collector mirror; a laser source generating a laser beam; and a source material irradiated by the laser beam to form a plasma and emit EUV light. In one aspect, the source material may consist essentially of a tin compound and may generate tin debris by plasma formation which deposits on the optical element and, in addition, the tin compound may include an element that is effective in etching deposited tin from the optical element surface. Tin compounds may include SnBr4, SnBr2 and SnH4. In another aspect, an EUV light source may comprise a molten source material irradiated by a laser beam to form a plasma and emit EUV light, the source material comprising tin and at least one other metal, for example tin with Gallium and/or Indium.
摘要翻译： 公开了一种EUV光源，其可以包括具有表面的至少一个光学元件，例如多层收集镜; 产生激光束的激光源; 以及由激光束照射以形成等离子体并发射EUV光的源材料。 在一个方面，源材料可以基本上由锡化合物组成，并且可以通过沉积在光学元件上的等离子体形成而产生锡屑，此外，锡化合物可以包括有效地从光学蚀刻沉积的锡的元素 元素表面。 锡化合物可以包括SnBr 4，SnBr 2和SnH 4。 另一方面，EUV光源可以包括由激光束照射以形成等离子体并发射EUV光的熔融源材料，源材料包含锡和至少一种其它金属，例如锡与镓和/或铟。
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公开(公告)号：US20060192153A1
公开(公告)日：2006-08-31
申请号：US11358983
申请日：2006-02-21
申请人： Alexander Bykanov , Oleh Khodykin
发明人： Alexander Bykanov , Oleh Khodykin
IPC分类号： G01J1/00
摘要： A source material dispenser for an EUV light source is disclosed that comprises a source material reservoir, e.g. tube, that has a wall and is formed with an orifice. The dispenser may comprise an electro-actuatable element, e.g. PZT material, that is spaced from the wall and operable to deform the wall and modulate a release of source material from the dispenser. A heat source heating a source material in the reservoir may be provided. Also, the dispenser may comprise an insulator reducing the flow of heat from the heat source to the electro-actuatable element. A method of dispensing a source material for an EUV light source is also described. In one method, a first signal may be provided to actuate the electro-actuatable elements to modulate a release of source material and a second signal, different from the first, may be provided to actuate the electro-actuatable elements to unclog the orifice.
摘要翻译： 公开了一种用于EUV光源的源材料分配器，其包括源材料储存器，例如， 管，其具有壁并形成有孔。 分配器可以包括电致动元件，例如 PZT材料，其与壁间隔开并且可操作以使壁变形并且调制源材料从分配器的释放。 可以提供加热储存器中的源材料的热源。 此外，分配器可以包括绝缘体，其减少从热源到可电致动元件的热流。 还描述了分配用于EUV光源的源材料的方法。 在一种方法中，可以提供第一信号来致动电致动元件以调制源材料的释放，并且可以提供与第一信号不同的第二信号以致动电致动元件以阻塞孔口。
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