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1. 发明授权

US07346093B2 DUV light source optical element improvements 有权
标题翻译： DUV光源光学元件改进
公开(公告)号：US07346093B2
公开(公告)日：2008-03-18
申请号：US10808157
申请日：2004-03-23
申请人： Richard L. Sandstrom , John Martin Algots , Joshua C. Brown , Raymond F. Cybulski , John Dunlop , James K. Howey , Richard G. Morton , Xiaojiang Pan , William N. Partlo , Firas F. Putris , Tom A. Watson , Thomas A. Yager
发明人： Richard L. Sandstrom , John Martin Algots , Joshua C. Brown , Raymond F. Cybulski , John Dunlop , James K. Howey , Richard G. Morton , Xiaojiang Pan , William N. Partlo , Firas F. Putris , Tom A. Watson , Thomas A. Yager
IPC分类号： H01S3/08 , H01S3/22
CPC分类号： H01S3/02 , G01J1/429 , G01J9/02 , G03F7/70025 , G03F7/70575 , G03F7/70933 , H01S3/0057 , H01S3/0071 , H01S3/036 , H01S3/038 , H01S3/0385 , H01S3/0401 , H01S3/041 , H01S3/08009 , H01S3/08036 , H01S3/0812 , H01S3/097 , H01S3/0971 , H01S3/0975 , H01S3/1024 , H01S3/104 , H01S3/105 , H01S3/1055 , H01S3/1305 , H01S3/134 , H01S3/139 , H01S3/22 , H01S3/2207 , H01S3/223 , H01S3/225 , H01S3/2251 , H01S3/2256 , H01S3/2258 , H01S3/2333 , H01S3/2366
摘要： A high power narrow band, high repetition rate laser light source optical improvement apparatus and methods are disclosed with a fast angularly positionable mirror having a mirror mounting frame, a reflective optic with a coefficient different from that of the mounting frame, at least one flexure mount fromed in the mounting frame that is flexible having flexure arm attached the flexture to the mounting frame. The apparatus may include a flexure force mechanism having an elongated rod. The force mechanism may pre-stress the flexure. The mirror maybe a grating which includes a substrate with metallic layer formed on the substrate, and a protective coating made of silica formed on the reflective metallic layer. The grating maybe actively tuned using an electro- or magneto-sensitive element. Oxides of the metal in the reflective layer may be removed by a hydrogen purge system exposed to deep ultraviolet radiation.
摘要翻译：公开了一种高功率窄带，高重复率激光光源光学改进装置和方法，其具有快速可角度定位的反射镜，其具有镜安装框架，具有与安装框架系数不同的系数的反射光学元件，至少一个弯曲安装座从柔性的安装框架开始，挠曲臂将挠性件附接到安装框架。该装置可以包括具有细长杆的挠曲力机构。力机构可以预应力挠曲。镜子可以是包括在基板上形成有金属层的基板的光栅，以及形成在反射金属层上的由二氧化硅形成的保护涂层。光栅可以使用电磁感应元件或磁敏元件进行主动调谐。可以通过暴露于深紫外线辐射的氢气清除系统来去除反射层中金属的氧化物。

2. 发明授权

US6128323A Reliable modular production quality narrow-band high REP rate excimer laser 有权
标题翻译：可靠的模块化生产质量窄带高REP率准分子激光器
公开(公告)号：US6128323A
公开(公告)日：2000-10-03
申请号：US157067
申请日：1998-09-18
申请人： David W. Myers , Herve A. Besaucele , Palash P. Das , Thomas P. Duffey , Alexander I. Ershov , Igor V. Fomenkov , Thomas Hofmann , Richard G. Morton , Richard M. Ness , Peter C. Newman , Robert G. Ozarski , Gamaralalage G. Padmabandu , William N. Partlo , Daniel A. Rothweil , Richard L. Sandstrom , Paul S. Thompson , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb , Paolo Zambon
发明人： David W. Myers , Herve A. Besaucele , Palash P. Das , Thomas P. Duffey , Alexander I. Ershov , Igor V. Fomenkov , Thomas Hofmann , Richard G. Morton , Richard M. Ness , Peter C. Newman , Robert G. Ozarski , Gamaralalage G. Padmabandu , William N. Partlo , Daniel A. Rothweil , Richard L. Sandstrom , Paul S. Thompson , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb , Paolo Zambon
IPC分类号： G03F7/20 , H01S3/02 , H01S3/03 , H01S3/036 , H01S3/041 , H01S3/08 , H01S3/081 , H01S3/097 , H01S3/0971 , H01S3/1055 , H01S3/134 , H01S3/139 , H01S3/225 , H03K3/57 , H03K17/80 , H01S3/00
CPC分类号： G03F7/70025 , G03F7/70041 , G03F7/70358 , G03F7/70558 , G03F7/70575 , H01S3/02 , H01S3/03 , H01S3/036 , H01S3/041 , H01S3/097 , H01S3/0971 , H01S3/1055 , H01S3/134 , H01S3/225 , H03K17/80 , H03K3/57 , H01S3/08009 , H01S3/0812 , H01S3/1392 , H01S3/2251 , H01S3/2256
摘要： The present invention provides a reliable modular production quality excimer laser capable of producing 10 mJ laser pulses at 2000 Hz with a full width half, maximum bandwidth of about 0.6 pm or less. Replaceable modules include a laser chamber; a pulse power system comprised of three modules; an optical resonator comprised of a line narrowing module and an output coupler module; a wavemeter module, an electrical control module, a cooling water module and a gas control module. Improvements in the laser chamber permitting the higher pulse rates and improved bandwidth performance include a single upstream preionizer tube and a high efficiency chamber. The chamber is designed for operation at lower fluorine concentration. Important improvements have been provided in the pulse power unit to produce faster rise time and improved pulse energy control. These improvements include an increased capacity high voltage power supply with a voltage bleed-down circuit for precise voltage trimming, an improved commutation module that generates a high voltage pulse from the capacitors charged by the high voltage power supply and amplifies the pulse voltage 23 times with a very fast voltage transformer having a secondary winding consisting of a single four-segment stainless steel rod. A novel design for the compression head saturable inductor greatly reduces the quantity of transformer oil required and virtually eliminates the possibility of oil leakage which in the past has posed a hazard.
摘要翻译：本发明提供了一种可靠的模块化生产质量准分子激光器，其能够在2000Hz下产生10mJ激光脉冲，全宽度为一半，最大带宽为约0.6μm或更小。可更换模块包括激光室; 由三个模块组成的脉冲电源系统; 光学谐振器，包括线窄模块和输出耦合器模块; 波形计模块，电气控制模块，冷却水模块和气体控制模块。允许更高脉冲速率和改进的带宽性能的激光室的改进包括单个上游预分解器管和高效室。该室设计用于在较低的氟浓度下运行。在脉冲功率单元中已经提供了重要的改进，以产生更快的上升时间和改进的脉冲能量控制。这些改进包括增加容量的高压电源，具有用于精确电压调整的电压降低电路，改进的换向模块，其从由高压电源充电的电容器产生高电压脉冲，并用脉冲电压放大23次具有由单个四段不锈钢棒组成的次级绕组的非常快速的电压互感器。用于压缩头可饱和电感器的新颖设计大大减少了所需的变压器油的数量，并且几乎消除了过去漏油的可能性。

3. 发明授权

US5991324A Reliable. modular, production quality narrow-band KRF excimer laser 失效
标题翻译：可靠。模块化，生产质量好的窄带KRF准分子激光器
公开(公告)号：US5991324A
公开(公告)日：1999-11-23
申请号：US41474
申请日：1998-03-11
申请人： David S. Knowles , James H. Azzola , Herve A. Besaucele , Palash P. Das , Alexander I. Ershov , Igor V. Fomenkov , Tibor Juhasz , Robert G. Ozarski , William N. Partlo , Daniel A. Rothweil , Richard L. Sandstrom , Richard C. Ujazdowski , Tom A. Watson , Richard M. Ness
发明人： David S. Knowles , James H. Azzola , Herve A. Besaucele , Palash P. Das , Alexander I. Ershov , Igor V. Fomenkov , Tibor Juhasz , Robert G. Ozarski , William N. Partlo , Daniel A. Rothweil , Richard L. Sandstrom , Richard C. Ujazdowski , Tom A. Watson , Richard M. Ness
IPC分类号： H01S3/038 , G03F7/20 , H01S3/02 , H01S3/03 , H01S3/036 , H01S3/0971 , H01S3/1055 , H01S3/139 , H01S3/225 , H01S3/22
CPC分类号： G01J9/0246 , G03F7/70025 , G03F7/70041 , G03F7/70358 , G03F7/70558 , G03F7/70575 , H01S3/02 , H01S3/03 , H01S3/036 , H01S3/0971 , H01S3/1055 , H01S3/225 , H01S3/1392
摘要： A reliable, modular, production quality narrow-band KrF excimer laser capable of producing 10 mJ laser pulses at 1000 Hz with a bandwidth of about 0.6 pm or less. The present invention is especially suited to long-term round-the-clock operation in the lithographic production of integrated circuits. Improvements over prior art lasers include a single upstream preionizer tube and acoustic baffles. A preferred embodiment includes reduced fluorine concentration, an anode support bar shaped to reduce aerodynamic reaction forces on blower bearings, a modified pulse power system providing faster pulse rise time, an output coupler with substantially increased reflectivity, a line narrowing module with CaF prism beam expanders, a more accurate wavemeter, a laser computer controller programmed with new and improved pulse energy control algorithm.
摘要翻译：一种可靠，模块化，生产质量好的窄带KrF准分子激光器，能够以1000Hz的频率产生10mJ的激光脉冲，带宽约为0.6μm或更小。本发明特别适用于集成电路的平版印刷生产中的长期全天候操作。现有技术的激光器的改进包括单个上游预分解器管和声学挡板。优选的实施例包括减少的氟浓度，阳极支撑杆形状以减小鼓风机轴承上的空气动力反作用力，改进的脉冲电源系统提供更快的脉冲上升时间，输出耦合器具有显着增加的反射率，具有CaF棱镜扩束器的线窄化模块，更准确的波长计，激光计算机控制器编程，具有新的改进的脉冲能量控制算法。

4. 发明授权

US6034978A Gas discharge laser with gas temperature control 有权
标题翻译：气体放电激光器采用气体温度控制
公开(公告)号：US6034978A
公开(公告)日：2000-03-07
申请号：US310872
申请日：1999-05-12
申请人： Richard C. Ujazdowski , Robert A. Shannon , Dmitry Berger , William N. Partlo , Tom A. Watson , Paul S. Thompson , Toshihiko Ishihara , Carl E. Tedesco, II , Donald G. Larson , Steven M. Harrington , Richard G. Morton , James H. Azzola , I. Roger Oliver , Thomas P. Duffey , Igor V. Fomenkov
发明人： Richard C. Ujazdowski , Robert A. Shannon , Dmitry Berger , William N. Partlo , Tom A. Watson , Paul S. Thompson , Toshihiko Ishihara , Carl E. Tedesco, II , Donald G. Larson , Steven M. Harrington , Richard G. Morton , James H. Azzola , I. Roger Oliver , Thomas P. Duffey , Igor V. Fomenkov
IPC分类号： H01S3/225 , G03F7/20 , H01S3/036 , H01S3/041 , H01S3/134 , H01S3/04
CPC分类号： G03F7/70025 , H01S3/134 , H01S3/036
摘要： A gas discharge laser with fast response gas temperature control to maintain laser gas temperature within desired limits during burst mode operation. Preferred embodiments include a passive temperature stabilizer having fins with surface areas exposed to flowing laser gas at least equal to the surface area of the cooling fins of a laser gas heat exchanger. Preferred embodiments utilize heating elements and coolant flow control to regulate laser gas temperatures using processors programmed to anticipate idle periods.
摘要翻译：一种具有快速响应气体温度控制的气体放电激光器，用于在脉冲串模式操作期间将激光气体温度保持在期望的限度内。优选实施例包括具有散热片的被动温度稳定器，其表面积暴露于至少等于激光气体热交换器的冷却片的表面积的流动激光气体。优选实施例利用加热元件和冷却剂流量控制来调节激光气体温度，使用编程为预期空闲周期的处理器。

5. 发明授权

US06644324B1 Laser discharge chamber passivation by plasma 有权
标题翻译：激光放电室通过等离子体钝化
公开(公告)号：US06644324B1
公开(公告)日：2003-11-11
申请号：US09518970
申请日：2000-03-06
申请人： Tom A. Watson , Richard L. Sandstrom , Richard G. Morton , Robert E. Weeks , John P. Quitter , Mark R. Lewis
发明人： Tom A. Watson , Richard L. Sandstrom , Richard G. Morton , Robert E. Weeks , John P. Quitter , Mark R. Lewis
IPC分类号： B08B704
CPC分类号： B82Y10/00 , B08B7/0035 , B08B7/0042 , G03F7/70025 , H01J37/32862 , H01S3/036 , H01S3/225
摘要： Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen containing gases. The oxygen based plasma is drawn into the laser discharge chamber, where it reacts with contaminants and cleans internal surfaces. After cleaning, a fluorine based plasma is formed in the plasma source and drawn into the laser discharge chamber to passivate internal surfaces. In another embodiment, cleaning with the oxygen based plasma is not used since some level of cleaning is accomplished with the fluorine based plasma. In another embodiment, oxygen based plasmas and fluorine based plasmas are formed in the laser discharge chamber by applying a radiofrequency signal to a laser discharge chamber electrode. Plasma cleaning and passivation of laser discharge chambers is safer, more efficient, and more effective than conventional thermal cleaning and passivation processes.
摘要翻译：提供了用等离子体清洗和钝化激光放电室的方法和装置。在一个实施例中，通过对含氧气体施加射频信号，在激光放电室外部的等离子体源中形成氧基等离子体。氧基等离子体被吸入激光放电室，在其中与污染物反应并清洗内表面。在清洁之后，在等离子体源中形成氟基等离子体并被吸入激光放电室以钝化内表面。在另一个实施例中，不使用基于氧的等离子体的清洁，因为用氟基等离子体进行一些清洁水平。在另一个实施例中，通过向激光放电室电极施加射频信号，在激光放电室中形成氧基等离子体和基于氟的等离子体。激光放电室的等离子体清洁和钝化比传统的热清洗和钝化工艺更安全，更有效，更有效。

6. 发明授权

US06914927B2 Laser discharge chamber passivation by plasma 失效
标题翻译：激光放电室通过等离子体钝化
公开(公告)号：US06914927B2
公开(公告)日：2005-07-05
申请号：US10649186
申请日：2003-08-26
申请人： Tom A. Watson , Richard L. Sandstrom , Richard G. Morton , Robert E. Weeks , John P. Quitter , Mark R. Lewis
发明人： Tom A. Watson , Richard L. Sandstrom , Richard G. Morton , Robert E. Weeks , John P. Quitter , Mark R. Lewis
IPC分类号： H01L21/027 , B08B7/00 , G03F7/20 , H01S3/03 , H01S3/036 , H01S3/225 , H01S3/22 , H01S3/09 , H01S3/091
CPC分类号： B82Y10/00 , B08B7/0035 , B08B7/0042 , G03F7/70025 , H01J37/32862 , H01S3/036 , H01S3/225
摘要： Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen containing gases. The oxygen based plasma is drawn into the laser discharge chamber, where it reacts with contaminants and cleans internal surfaces. After cleaning, a fluorine based plasma is formed in the plasma source and drawn into the laser discharge chamber to passivate internal surfaces. In another embodiment, cleaning with the oxygen based plasma is not used since some level of cleaning is accomplished with the fluorine based plasma. In another embodiment, oxygen based plasmas and fluorine based plasmas are formed in the laser discharge chamber by applying a radiofrequency signal to a laser discharge chamber electrode. Plasma cleaning and passivation of laser discharge chambers is safer, more efficient, and more effective than conventional thermal cleaning and passivation processes.
摘要翻译：提供了用等离子体清洗和钝化激光放电室的方法和装置。在一个实施例中，通过对含氧气体施加射频信号，在激光放电室外部的等离子体源中形成氧基等离子体。氧基等离子体被吸入激光放电室，在其中与污染物反应并清洗内表面。在清洁之后，在等离子体源中形成氟基等离子体并被吸入激光放电室以钝化内表面。在另一个实施例中，不使用基于氧的等离子体的清洁，因为用氟基等离子体进行一些清洁水平。在另一个实施例中，通过向激光放电室电极施加射频信号，在激光放电室中形成氧基等离子体和基于氟的等离子体。激光放电室的等离子体清洁和钝化比传统的热清洗和钝化工艺更安全，更有效，更有效。

7. 发明授权

US6034984A Tangential fan with cutoff assembly and vibration control for electric discharge laser 有权
标题翻译：切向风扇切割组件和放电激光器的振动控制
公开(公告)号：US6034984A
公开(公告)日：2000-03-07
申请号：US310786
申请日：1999-05-12
申请人： Thomas Hofmann , James K. Howey , Robert A. Shannon , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb
发明人： Thomas Hofmann , James K. Howey , Robert A. Shannon , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb
IPC分类号： G03F7/20 , H01S3/036 , H01S3/225 , H01S3/22
CPC分类号： H01S3/036 , G03F7/708 , H01S3/225
摘要： A tangential fan and cutoff assembly for recirculating a lasing gas mixture has blade members, which vary in circumferential position stepwise from end to end, and/or a tapered anode assembly. The number of blade members can be constant or variable between ends. The circumferential position of blade members can shift monotonically or reversibly between ends. Blade members are stiffened by optimally selecting the number and placement of hub members to control the natural vibration frequency of the fan. Methods of forming tangential fans include casting, and machining from a solid block. Monolithic structures can be joined, typically by electron-beam welding. Casting, welding, and machining processes introduce no additional contaminants. Tangential fans produced have mechanical rigidity, accurate tolerances, and low contaminant concentrations. Blade members can be formed into air foil shapes.
摘要翻译：用于再循环激光气体混合物的切向风扇和切割组件具有叶片构件，其周向位置从端到端逐渐变化，和/或锥形阳极组件。刀片构件的数量可以在端部之间是恒定的或可变的。叶片构件的圆周位置可以在端部之间单调或可逆地移动。叶片构件通过最佳地选择轮毂构件的数量和布置来控制风扇的固有振动频率而变硬。形成切向风扇的方法包括从固体块铸造和加工。通常可以通过电子束焊接来连接整体结构。铸造，焊接和加工过程不会引起额外的污染物。生产的切向风扇具有机械刚度，精度公差和污染物浓度低。叶片构件可以形成为空气箔形状。

8. 发明授权

US5748656A Laser having improved beam quality and reduced operating cost 失效
标题翻译：激光器具有改善的光束质量和降低的操作成本
公开(公告)号：US5748656A
公开(公告)日：1998-05-05
申请号：US583302
申请日：1996-01-05
申请人： Tom A. Watson , William N. Partlo , Donald G. Larson , Igor V. Fomenkov , Anthony J. de Ruyter , Palash P. Das
发明人： Tom A. Watson , William N. Partlo , Donald G. Larson , Igor V. Fomenkov , Anthony J. de Ruyter , Palash P. Das
IPC分类号： H01S3/03 , H01S3/036 , H01S3/04 , H01S3/041 , H01S3/225 , H01S3/045
CPC分类号： H01S3/036 , H01S3/04 , H01S3/041 , F28D2021/0077 , H01S3/225
摘要： Disclosed is a laser useful in, e.g., photolithography or medical surgery. In one embodiment, the laser comprises a discharge chamber and heat-generating electronics that are enclosed in a baffled enclosure that requires less cooling air to reliably cool the components in the enclosure than previous unbaffled enclosures. A method of reducing the amount of conditioned air is also provided. In a further embodiment, the laser has a heat-exchange system that acts quickly in response to changes in laser gas temperature by adjusting a flow-proportioning valve regulating water flow through a heat exchanger, thereby providing a continuously variable rate of heat exchange through the heat exchanger to maintain the lasing gas temperature constant. Methods of providing a laser beam and of improving the uniformity of a laser beam are disclosed, as are photolithography methods utilizing a laser and method of this invention.
摘要翻译：公开了一种可用于例如光刻或医疗手术中的激光。在一个实施例中，激光器包括放电室和发热电子器件，其封闭在挡板外壳中，其需要较少的冷却空气以可靠地冷却外壳中的部件比先前的未封闭的外壳。还提供了减少调节空气量的方法。在另一个实施例中，激光器具有热交换系统，其响应于激光气体温度的变化而快速作用，通过调节调节通过热交换器的水流的流量比例阀，由此通过所述热交换系统提供连续可变的热交换速率热交换器保持激光温度恒定。公开了提供激光束并提高激光束的均匀性的方法，以及利用激光的光刻方法和本发明的方法。

9. 发明授权

US6144686A Tangential fan with cutoff assembly and vibration control for electric discharge laser 有权
公开(公告)号：US6144686A
公开(公告)日：2000-11-07
申请号：US400026
申请日：1999-09-21
申请人： Thomas Hofmann , James K. Howey , Robert A. Shannon , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb
发明人： Thomas Hofmann , James K. Howey , Robert A. Shannon , Richard C. Ujazdowski , Tom A. Watson , R. Kyle Webb
IPC分类号： F16F15/10 , G03F7/20 , H01S3/036 , H01S3/223 , H01S3/225 , H01S3/22
CPC分类号： G03F7/708 , H01S3/036 , H01S3/225
摘要： A tangential fan and cutoff assembly for recirculating a lasing gas mixture has blade members, which vary in circumferential position stepwise from end to end, and/or a tapered anode assembly. The number of blade members can be constant or variable between ends. The circumferential position of blade members can shift monotonically or reversibly between ends. Blade members are stiffened by optimally selecting the number and placement of hub members to control the natural vibration frequency of the fan. Methods of forming tangential fans include casting, and machining from a solid block. Monolithic structures can be joined, typically by electron-beam welding. Casting, welding, and machining processes introduce no additional contaminants. Tangential fans produced have mechanical rigidity, accurate tolerances, and low contaminant concentrations. Blade members can be formed into air foil shapes.

10. 发明授权

US5729562A Pulse power generating circuit with energy recovery 失效
标题翻译：具有能量回收的脉冲发电电路
公开(公告)号：US5729562A
公开(公告)日：1998-03-17
申请号：US739873
申请日：1996-10-31
申请人： Daniel L. Birx , Palash P. Das , Igor V. Fomenkov , William N. Partlo , Tom A. Watson
发明人： Daniel L. Birx , Palash P. Das , Igor V. Fomenkov , William N. Partlo , Tom A. Watson
IPC分类号： H01S3/00 , H01S3/097 , H01S3/225 , H02M9/04 , H03K3/57 , H03K17/00 , H03K17/80 , H05H1/06
CPC分类号： H05H1/06 , H01S3/097 , H03K17/80 , H03K3/57 , H01S3/225 , H03K2217/0036
摘要： A high voltage pulse power generating circuit capable of providing energy recovery is disclosed. The energy efficient pulse generating circuit source comprises a high voltage charge storing element which is periodically discharged into a compressor circuit. An energy recovery circuit coupled to the compressor circuit reverses the polarity of energy dissipated by the pulse power generating circuit and transfers the waste energy back to the power source. In a preferred embodiment, the pulse power generating circuit of the present invention utilizes an SCR switch for periodically discharging the charge storing element. This embodiment of the present invention provides pulses consistently and will not provide even a single missed pulse.
摘要翻译：公开了一种能够提供能量回收的高压脉冲发生电路。能量效率脉冲发生电路源包括周期性地排放到压缩机电路中的高电压电荷存储元件。耦合到压缩机电路的能量恢复电路反转由脉冲发电电路消耗的能量的极性，并将废能转移回电源。在优选实施例中，本发明的脉冲发生电路利用SCR开关来周期性地对电荷存储元件进行放电。本发明的该实施例一致地提供脉冲，并且甚至不会提供单个错过的脉冲。

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