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    • 1. 发明授权
    • Method for producing shaped hole in a structure
    • 一种结构中形成孔的方法
    • US06359254B1
    • 2002-03-19
    • US09408695
    • 1999-09-30
    • Robert T. Brown
    • Robert T. Brown
    • B23K2600
    • B23K26/0622B23K26/361B23K26/384B23K26/389B23K2101/001B23P2700/06F05B2260/202
    • The present invention is a more efficient method for manufacturing shaped holes, which include a diffuser section and a cylindrical meter section. Unlike electro-discharge machining (EDM), which is the current method for manufacturing shaped holes, the method of the present invention laser drills the diffuser section followed by the cylindrical meter section. Laser drilling the cylindrical meter section creates the formation of re-solidified vapor in the diffuser section, which is easily milled. Recognizing that it is much easier to mill re-solidified vapor compared to the parent material, the present invention first creates the diffuser section and allows re-solidified vapor to form therein. Although the re-solidified vapor is thereafter milled, the entire process of the present invention is a more efficient method for producing shaped holes in comparison to EDM.
    • 本发明是一种制造成形孔的更有效的方法,其包括扩散器部分和圆柱形流量计部分。 与当前制造成形孔的方法的放电加工(EDM)不同,本发明的方法对扩散器部分进行激光钻孔,随后是圆柱形仪表部分。 激光钻孔的圆柱形仪表部分在扩散器部分中形成再凝固的蒸气,其易于研磨。 认识到与母体材料相比,重新凝固的蒸气更容易研磨,本发明首先产生扩散器部分并且允许在其中形成再凝固的蒸气。 此后,虽然再凝固的蒸气被研磨,但与EDM相比,本发明的整个方法是生产成型孔的更有效的方法。
    • 3. 发明授权
    • Optically pumped laser
    • 光泵浦激光
    • US4177435A
    • 1979-12-04
    • US841866
    • 1977-10-13
    • Robert T. Brown
    • Robert T. Brown
    • H01S3/094H01S3/225H01S3/097
    • H01S3/225H01S3/094
    • An optically pumped laser system having a configuration capable of efficiently coupling pumping radiation with a gain medium to provide an outlet beam having a wavelength in the ultraviolet and visible spectrum is disclosed. A gain medium including halide, rare and noble gas elements is contained within a cell at total pressures from four to thirty atmospheres. The gain medium is ionized by a spark source within the cell and interacted with optical pumping radiation to provide a diffuse electrical discharge. An optical resonator having the discharge disposed therein efficiently extracts energy from the gain medium to provide an output beam having a wavelength in the visible spectrum when the total pressure of the gain medium is high, typically greater than nine atmospheres and a wavelength in the ultraviolet spectrum when the pressure is moderate, typically less than five atmospheres.
    • 公开了一种光泵浦激光系统,其具有能够有效耦合泵浦辐射与增益介质以提供具有紫外和可见光谱波长的出射光束的结构。 包括卤化物,稀有和惰性气体元素的增益介质在四至三十个大气压的总压力下被包含在电池内。 增益介质由电池内的火花源电离并与光泵浦辐射相互作用以提供漫射放电。 具有放电设置在其中的光谐振器有效地从增益介质中提取能量,以便当增益介质的总压力高,通常大于9个大气压和紫外光谱波长时提供具有可见光谱波长的输出光束 当压力适中时,通常小于5个大气压。
    • 6. 发明授权
    • Coherent gate vesta energy processor
    • 相干门维斯塔能量处理器
    • US5065340A
    • 1991-11-12
    • US354212
    • 1989-05-19
    • John I. BoriaRobert T. Brown
    • John I. BoriaRobert T. Brown
    • H04N7/10H04N7/20
    • H04N7/20H04N7/10
    • A system for the transmission and reception of wide-band real time multi-channel signals for video, audio, facsimile and/or data information, over a single or multiple satellite transponder, or over a carrier of available bandwidth for program distribution using single sideband suppressed carrier amplitude modulation which requires, for example, only 6 MHz of radio frequency bandwidth to transmit a full NTSC color television channel and which permits the use of small apertured dishes and simple conversion for the consumer's television receiver, for a nationwide signal distribution or, wherever television reception is wanted, at an economical cost.
    • 用于通过单个或多个卫星应答器或通过可用带宽的载波传输和接收用于视频,音频,传真和/或数据信息的宽带实时多声道信号的系统,用于使用单边带 抑制载波幅度调制,其需要例如仅6MHz的射频带宽来传输完整的NTSC彩色电视频道,并且允许使用小孔菜和用于消费者的电视接收机的简单转换用于全国信号分布, 无论何时需要电视接收,都需要经济的费用。
    • 8. 发明授权
    • Stability enhanced halide lasers
    • 稳定增强卤化物激光器
    • US4331937A
    • 1982-05-25
    • US132018
    • 1980-03-20
    • Robert T. BrownWilliam L. Nighan
    • Robert T. BrownWilliam L. Nighan
    • H01S3/097
    • H01S3/09707
    • 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.
    • 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。
    • 9. 发明授权
    • Stability enhanced rare-gas monofluoride lasers
    • 稳定增强稀土单氟化物激光器
    • US4348647A
    • 1982-09-07
    • US156547
    • 1980-06-05
    • William L. NighanRobert T. Brown
    • William L. NighanRobert T. Brown
    • H01S3/097H01S3/225H01S3/22
    • H01S3/225H01S3/09707
    • 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.
    • 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。