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1. 发明授权

US5907570A Diode pumped laser using gain mediums with strong thermal focussing 失效
标题翻译：二极管泵浦激光使用具有强烈热聚焦的增益介质
公开(公告)号：US5907570A
公开(公告)日：1999-05-25
申请号：US955768
申请日：1997-10-22
申请人： William L. Nighan , Mark S. Keirstead , Emily Cheng
发明人： William L. Nighan , Mark S. Keirstead , Emily Cheng
IPC分类号： H01S3/08 , H01S3/042 , H01S3/094 , H01S3/0941 , H01S3/16
CPC分类号： H01S3/09415 , H01S3/042 , H01S3/08045 , H01S3/0805 , H01S3/08072 , H01S3/1611 , H01S3/1673
摘要： A diode pumped laser includes a resonator mirror and an output coupler, defining a laser resonator with a resonator optical axis. A strong thermal lens gain medium with a TEM.sub.00 mode diameter is mounted in the resonator along the resonator optical axis. The dopant level of the gain medium is in the range of 0.01 to less than 0.5 percent. A diode pump source supplies a pump beam to the gain medium in the laser resonator, and produces an output beam with a diameter larger than the TEM.sub.00 mode diameter to reduce thermal birefringence. A power source supplies power to the diode pump source. A polarizing element can be positioned in the resonator, along with a aperture stop The laser operates well over a large range of pump powers. Its slope efficiency in the TEM.sub.00 mode is greater than 40%, with an overall efficiency greater than 25%. One of the gain mediums used is Nd:YVO.sub.4. This material exhibits high gain and a short upper state lifetime. These properties make it attractive in designing a Q-switched laser, or one that is insensitive to optical feedback. Another material is Nd:YAG. The technique of optimizing the pump beam spot size is found to minimize loss due to thermal birefringence.
摘要翻译：二极管泵浦激光器包括谐振器镜和输出耦合器，其限定具有谐振器光轴的激光谐振器。谐振器中沿着谐振器光轴安装了具有TEM00模式直径的强热透镜增益介质。增益介质的掺杂剂水平在0.01至小于0.5％的范围内。二极管泵浦源将激光束提供给激光谐振器中的增益介质，并产生直径大于TEM00模式直径的输出光束，以减少热双折射。电源为二极管泵浦源供电。偏振元件可以与孔径光阑一起定位在谐振器中。激光器在大范围的泵浦功率下运行良好。其TEM00模式的斜率效率大于40％，总效率大于25％。使用的增益介质之一是Nd：YVO4。该材料具有较高的增益和较短的上限寿命。这些性质使得在设计Q开关激光器或对光学反馈不敏感的激光器方面具有吸引力。另一种材料是Nd：YAG。发现优化泵浦光斑尺寸的技术可以使由于热双折射引起的损耗最小化。

2. 发明授权

US06287298B1 Diode pumped, multi axial mode intracavity doubled laser 失效
标题翻译：二极管泵浦，多轴模式腔内双激光
公开(公告)号：US06287298B1
公开(公告)日：2001-09-11
申请号：US09070478
申请日：1998-04-30
申请人： William L. Nighan , John Cole , Emily Cheng
发明人： William L. Nighan , John Cole , Emily Cheng
IPC分类号： A61F9008
CPC分类号： G02F1/37 , G02F2001/3542 , H01S3/081 , H01S3/094053 , H01S3/0941 , H01S3/09415 , H01S3/109 , H01S3/13 , H01S3/1611 , H01S3/1643 , H01S3/1653 , H01S3/1673
摘要： A diode pumped, multi axial mode, intracavity doubled laser has at least two resonator mirrors that define a resonator cavity. A Nd:YVO4 laser crystal and a LBO doubling crystal are positioned in the resonator cavity. A diode pump source supplies a pump beam to the laser crystal and produces a laser crystal beam with at least three axial modes that are incident on the doubling crystal. A frequency doubled output beam is generated with an output power of at least 1 watt.
摘要翻译：二极管泵浦，多轴模式，腔内倍增激光器具有限定谐振腔的至少两个谐振器反射镜。 Nd：YVO4激光晶体和LBO倍晶体位于谐振腔中。二极管泵浦源将激光束提供给激光晶体，并产生具有至少三个轴向模式的激光晶体光束，入射到倍晶上。产生输出功率至少为1瓦的倍频输出光束。

3. 发明授权

US4660210A Two-halogen donor mixture for XeF (C.fwdarw.A) laser 失效
标题翻译：用于XeF（C-> A）激光的双卤素供体混合物
公开(公告)号：US4660210A
公开(公告)日：1987-04-21
申请号：US840982
申请日：1986-03-14
申请人： William L. Nighan , Frank K. Tittel , William L. Wilson, Jr.
发明人： William L. Nighan , Frank K. Tittel , William L. Wilson, Jr.
IPC分类号： H01S3/097 , H01S3/225 , H01S3/22
CPC分类号： H01S3/09707 , H01S3/225
摘要： An improved electric discharge XeF excimer laser employs a reaction gas mixture containing NF.sub.3 and F.sub.2 in proportions that tailor the kinetics of the electrochemical reactions in order to achieve a substantial increase in power.
摘要翻译：改进的放电XeF准分子激光器采用包含NF 3和F 2的反应气体混合物，其比例可以调整电化学反应的动力学，以实现功率的显着增加。

4. 发明授权

US4646311A Multi-component buffer gas mixture for XeF(C.fwdarw.A) laser 失效
标题翻译：用于XeF（C-> A）激光器的多组分缓冲气体混合物
公开(公告)号：US4646311A
公开(公告)日：1987-02-24
申请号：US726530
申请日：1985-04-24
申请人： William L. Nighan , Frank K. Tittel , William L. Wilson, Jr.
发明人： William L. Nighan , Frank K. Tittel , William L. Wilson, Jr.
IPC分类号： H01S3/225 , H01S3/22
CPC分类号： H01S3/225
摘要： A xenon fluoride (C.fwdarw.A) laser operating in the visible region is improved by the use of a synthesized buffer gas containing at least two components that combine to provide kinetic properties that are different from those of any single-component buffer gas.
摘要翻译：通过使用合成的至少两种组分的合成缓冲气体来提高在可见光区域中操作的氙氟化物（C-> A）激光，以提供不同于任何单组分缓冲气体的动力学性质。

5. 发明授权

US4549109A Optical display with excimer fluorescence 失效
标题翻译：具有准分子荧光的光学显示
公开(公告)号：US4549109A
公开(公告)日：1985-10-22
申请号：US625199
申请日：1984-06-28
申请人： William L. Nighan , Walter J. Wiegand , Carl M. Ferrar
发明人： William L. Nighan , Walter J. Wiegand , Carl M. Ferrar
IPC分类号： H01J17/20 , H01J1/62 , H01J63/04
CPC分类号： H01J17/20
摘要： A display device employs an electric discharge passing through a mixture of gases to form an excimer that fluoresces in the blue/green region of the optical spectrum.
摘要翻译：显示装置采用通过气体混合物的放电以形成在光谱的蓝/绿区域发荧光的准分子。

6. 发明授权

US4348647A Stability enhanced rare-gas monofluoride lasers 失效
标题翻译：稳定增强稀土单氟化物激光器
公开(公告)号：US4348647A
公开(公告)日：1982-09-07
申请号：US156547
申请日：1980-06-05
申请人： William L. Nighan , Robert T. Brown
发明人： William L. Nighan , Robert T. Brown
IPC分类号： H01S3/097 , H01S3/225 , H01S3/22
CPC分类号： H01S3/225 , H01S3/09707
摘要： The onset of electric discharge instability in rare-gas monofluoride lasers pumped by electron beam sustained electric discharges (e.g., KrF*) is delayed by employing a laser gas mixture (such as 0.95 Ar, 0.05 Kr, and 0.005 F.sub.2) which includes a small amount of a halogen compound (NF.sub.3) having a rate coefficient for electron dissociative attachment which is much larger than that for fluorine (such as 0.0005 NF.sub.3). The addition of nitrogen trifluoride to the gas mixture modifies the halogen kinetics in a manner to reduce the effect that consumption of the fluorine fuel has on the growth of secondary electrons, and therefore the occurrence of instability in the discharge. The rare-gas metastable quenching coefficient for the nitrogen trifluoride is sufficiently small (on the order of six times smaller than that of the fluorine) so that the small amount of nitrogen trifluoride utilized to stabilize the discharge exerts little or no influence on the other laser processes.
摘要翻译：通过使用激光气体混合物（例如0.95Ar，0.05Kr和0.005F2），通过电子束持续放电（例如，KrF *）泵送的稀有气体单氟化物激光器中的放电不稳定性的开始被延迟，其包括小的具有比氟更强的电子离解附着速率系数的卤素化合物（NF 3）的量（如0.0005NF 3）。向气体混合物中添加三氟化氮以降低氟燃料的消耗对二次电子的生长的影响的方式改变卤素动力学，并因此降低了放电中的不稳定性。三氟化氮的稀有气体亚稳淬火系数足够小（比氟低六倍），因此用于稳定放电的少量三氟化氮对其他激光器几乎没有影响或没有影响过程。

7. 发明授权

US05999150A Electroluminescent display having reversible voltage polarity 失效
标题翻译：具有可逆电压极性的电致发光显示器
公开(公告)号：US05999150A
公开(公告)日：1999-12-07
申请号：US634105
申请日：1996-04-17
申请人： William L. Nighan , Fred A. Otter , Russell A. Budzilek
发明人： William L. Nighan , Fred A. Otter , Russell A. Budzilek
IPC分类号： G09G3/30
CPC分类号： G09G3/30 , G09G2310/0254
摘要： An electroluminescent display having reversible polarity and a method for reducing latent images in the electroluminescent panel is provided. The electroluminescent display includes a waveform generator for supplying voltage pulses to illuminate pixels within the electroluminescent panel. The electroluminescent display according to the invention periodically reverses the polarity of the voltage pulses to reduce latent images in the electroluminescent panel. The electroluminescent display preferably utilizes an asymmetrical drive scheme to provide a brighter electroluminescent display.
摘要翻译：提供具有可逆极性的电致发光显示器和用于减少电致发光面板中的潜像的方法。电致发光显示器包括用于提供电压脉冲以照亮电致发光面板内的像素的波形发生器。根据本发明的电致发光显示器周期性地反转电压脉冲的极性，以减少电致发光面板中的潜像。电致发光显示器优选地利用不对称驱动方案来提供更亮的电致发光显示器。

8. 发明授权

US4817096A Multiple wavelength excimer laser 失效
标题翻译：多波长准分子激光器
公开(公告)号：US4817096A
公开(公告)日：1989-03-28
申请号：US240370
申请日：1988-08-29
申请人： William L. Nighan , Roland A. Sauerbrey , Frank K. Tittel
发明人： William L. Nighan , Roland A. Sauerbrey , Frank K. Tittel
IPC分类号： H01S3/225 , H01S3/30 , H01S3/097 , H01S3/22 , H01S3/223
CPC分类号： H01S3/225
摘要： A transverse electrically excited gas laser comprises a mixture of rare gases and a fluorine donor at selected partial pressures so as to permit UV and/or visible rare gas-halide laser oscillation at two or more wavelengths simultaneously.
摘要翻译：横向电激励气体激光器以选定的分压包括稀有气体和氟供体的混合物，以便允许UV和/或可见稀有气体卤化物激光器在两个或更多个波长下同时振荡。

9. 发明授权

US4331937A Stability enhanced halide lasers 失效
标题翻译：稳定增强卤化物激光器
公开(公告)号：US4331937A
公开(公告)日：1982-05-25
申请号：US132018
申请日：1980-03-20
申请人： Robert T. Brown , William L. Nighan
发明人： Robert T. Brown , William L. Nighan
IPC分类号： H01S3/097
CPC分类号： H01S3/09707
摘要： The onset of electric discharge instability in electron beam enhanced electric discharge lasers employing halides, such as rare-gas monohalides (e.g., KrF*) and mercury vapor halide (e.g., HgBr*), is delayed by limiting the production of secondary electrons during laser pulse generation, to account for critical loss of halogen or halide fuel. Secondary electron production is controlled, in order to extend the pulse duration before the onset of discharge instability, by temporal tailoring of the primary electron concentration in the electric discharge region across the temporal expanse of possible laser action; the population of primary electrons can be temporally restrained by temporal decrease of the current density of the electron gun output, as a function, for instance, of gun driving voltage, or by temporal defocusing of the electron beam so as to provide reduced densities within the electric discharge region. Secondary electron production is also controlled by tailoring the production of rare-gas metastables. The production of metastables is controlled, in turn, by temporal tailoring of the electric field so as to provide a decreasing electric field to neutral particle density ratio across the temporal expanse of the laser pulse.
摘要翻译：使用卤化物的电子束增强放电激光器，例如稀有气体单卤素（例如KrF *）和汞蒸汽卤化物（例如HgBr *）的放电不稳定性的发生通过限制激光器内二次电子的产生而被延迟脉冲产生，以解决卤素或卤化物燃料的严重损失。控制二次电子产生，以便在放电不稳定开始之前延长脉冲持续时间，通过在可能的激光作用的时间范围内的放电区域中的初级电子浓度的时间调整; 初级电子的群体可以通过电子枪输出的电流密度的时间上的减小（例如，枪驱动电压的函数）或电子束的时间散焦来暂时抑制，从而在放电区域。二次电子生产也是通过调整稀有气体亚稳态的生产来控制的。亚稳态的产生又通过电场的时间调整来控制，从而在激光脉冲的时间范围内为中性粒子密度比提供减小的电场。

10. 发明授权

US4016448A High power electric discharge method and apparatus for laser chemical synthesis and other applications 失效
标题翻译：大功率放电法和激光化学合成装置等应用
公开(公告)号：US4016448A
公开(公告)日：1977-04-05
申请号：US635318
申请日：1975-11-26
申请人： William L. Nighan , Walter J. Wiegand
发明人： William L. Nighan , Walter J. Wiegand
IPC分类号： H01S3/036 , H01S3/038 , H01S3/0971 , H01J61/28 , H01S3/00
CPC分类号： H01S3/036 , H01S3/038 , H01S3/09713
摘要： Electric discharge method and apparatus for producing a relatively large volume, diffuse glow gas discharge plasma for laser, chemical synthesis and other applications at high power, high pressure and high volume levels and such that plasma properties are dominated by collision processes and wherein the operational parameters of the electric discharge are established to provide an average gas residence time T.sub.R in a continuous wave convective electric discharge and a discharge duration time T.sub.P in a pulsed electric discharge that is approximately equal to the plasma instability growth time T.sub.G = CP/JE where P is the pressure in Torr, JE is the electric power density in Watts/cm.sup.3 and C is a constant typically about 10.sup.-.sup.4 for self-sustained gas electric discharges and 10.sup.-.sup.3 for externally sustained gas electric discharges and wherein the convective electric discharge apparatus have a flow baffle system with a transverse foamed plastic baffle and a transverse turbulence generator plate for establishing an approximately isotopic and uniform turbulent flow pattern in the electric discharge region and such that T.sub.R and T.sub.G are representative of local values.
摘要翻译：用于在高功率，高压和高体积水平下产生用于激光，化学合成和其它应用的相对较大体积的扩散辉光气体放电等离子体的放电方法和装置，并且使得等离子体性质由碰撞过程控制，并且其中操作参数建立放电，以提供连续波对流放电中的平均气体停留时间TR和脉冲放电中的放电持续时间TP，其大约等于等离子体不稳定性生长时间TG = CP / JE，其中P为 Torr中的压力JE是以瓦特/ cm3表示的电功率密度，C是对于持续气体放电的自持气体放电的常数通常为约10 -4，对于外部持续气体放电为10 -3，放电装置具有流动挡板系统，其具有横向发泡塑料挡板和横向湍流发生器板在放电区域中建立大致同位素和均匀的湍流模式，并使TR和TG代表局部值。

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