公开(公告)号：US06943964B1

公开(公告)日：2005-09-13

申请号：US10858143

申请日：2004-06-01

申请人： Shukui Zhang ,  Michelle D. Shinn

发明人： Shukui Zhang ,  Michelle D. Shinn

IPC分类号： G02B13/18

CPC分类号： G02B27/0927 ,  G02B27/0955

摘要： A single lens laser beam shaper for converting laser beams from any spatial profile to a flat-top or uniform spatial profile. The laser beam shaper includes a lens having two aspheric surfaces. The beam shaper significantly simplifies the overall structure in comparison with conventional 2-element systems and therefore provides great ease in alignment and reduction of cost.

摘要翻译： 用于将激光束从任何空间分布转换成平顶或均匀空间分布的单透镜激光束整形器。 激光束整形器包括具有两个非球面的透镜。 与传统的2元件系统相比，光束整形器显着简化了整体结构，因此可以很方便地对准和降低成本。

公开(公告)号：US07740362B1

公开(公告)日：2010-06-22

申请号：US12070522

申请日：2008-02-19

申请人： George R. Neil ,  Michelle D. Shinn

发明人： George R. Neil ,  Michelle D. Shinn

IPC分类号： G02B5/08 ,  G02B7/185 ,  G02B7/195

CPC分类号： G02B5/08 ,  G02B7/1815 ,  G02B26/0816

摘要： A radius of curvature controlled mirror for controlling precisely the focal point of a laser beam or other light beam. The radius of curvature controlled mirror provides nearly spherical distortion of the mirror in response to differential expansion between the front and rear surfaces of the mirror. The radius of curvature controlled mirror compensates for changes in other optical components due to heating or other physical changes. The radius of curvature controlled mirror includes an arrangement for adjusting the temperature of the front surface and separately adjusting the temperature of the rear surface to control the radius of curvature. The temperature adjustment arrangements can include cooling channels within the mirror body or convection of a gas upon the surface of the mirror. A control system controls the differential expansion between the front and rear surfaces to achieve the desired radius of curvature.

摘要翻译： 用于精确控制激光束或其他光束的焦点的曲率半径控制镜。 曲率半径控制反射镜响应于反射镜的前表面和后表面之间的差异膨胀而提供反射镜几乎球形的变形。 曲率半径控制镜由于加热或其他物理变化而补偿其他​​光学元件的变化。 曲率半径控制镜包括用于调节前表面的温度并分别调整后表面的温度以控制曲率半径的装置。 温度调节装置可包括镜体内的冷却通道或反射镜表面上的气体对流。 控制系统控制前表面和后表面之间的差异膨胀，以实现所需的曲率半径。

公开(公告)号：US06809291B1

公开(公告)日：2004-10-26

申请号：US10231580

申请日：2002-08-30

申请人： George R. Neil ,  Michelle D. Shinn

发明人： George R. Neil ,  Michelle D. Shinn

IPC分类号： B23K2636

CPC分类号： B23K26/0613 ,  B23K26/0624 ,  B23K26/705

摘要： An improved method and apparatus increasing the accuracy and reducing the time required to machine materials, surface treat materials, and allow better control of defects such as particulates in pulsed laser deposition. The speed and quality of machining is improved by combining an ultrashort pulsed laser at high average power with a continuous wave laser. The ultrashort pulsed laser provides an initial ultrashort pulse, on the order of several hundred femtoseconds, to stimulate an electron avalanche in the target material. Coincident with the ultrashort pulse or shortly after it, a pulse from a continuous wave laser is applied to the target. The micromachining method and apparatus creates an initial ultrashort laser pulse to ignite the ablation followed by a longer laser pulse to sustain and enlarge on the ablation effect launched in the initial pulse. The pulse pairs are repeated at a high pulse repetition frequency and as often as desired to produce the desired micromachining effect. The micromachining method enables a lower threshold for ablation, provides more deterministic damage, minimizes the heat affected zone, minimizes cracking or melting, and reduces the time involved to create the desired machining effect.

摘要翻译： 改进的方法和设备提高了加工材料，表面处理材料以及更好地控制诸如脉冲激光沉积中的微粒的缺陷所需的精度和时间。 通过将高平均功率的超短脉冲激光与连续波激光器组合，可以提高加工速度和质量。 超短脉冲激光器提供大约数百飞秒的初始超短脉冲，以刺激目标材料中的电子雪崩。 与超短脉冲重合或不久之后，来自连续波激光的脉冲施加于靶。 微加工方法和装置创建一个初始的超短激光脉冲来点燃消融，随后是较长的激光脉冲，以维持和扩大在初始脉冲中发射的消融效应。 脉冲对以高脉冲重复频率重复，并且经常根据需要重复，以产生所需的微机械加工效果。 微加工方法能够实现更低的消融阈值，提供更多的确定性损伤，最大限度地减少热影响区域，最大限度地减少裂纹或熔化，并减少创建所需加工效果所需的时间。

公开(公告)号：US06986585B1

公开(公告)日：2006-01-17

申请号：US10978887

申请日：2004-11-01

申请人： George R. Neil ,  John Wickham Rathke ,  Thomas John Schultheiss ,  Michelle D. Shinn ,  Lawrence A. Dillon-Townes

发明人： George R. Neil ,  John Wickham Rathke ,  Thomas John Schultheiss ,  Michelle D. Shinn ,  Lawrence A. Dillon-Townes

IPC分类号： G02B5/08

CPC分类号： G02B7/1815 ,  G02B5/10 ,  G02B26/0825

摘要： A controlled radius of curvature mirror assembly comprising: a distortable mirror having a reflective surface and a rear surface; and in descending order from the rear surface; a counter-distortion plate; a flow diverter having a flow diverter aperture at the center thereof; a flow return plate having a flow return aperture at the center thereof; a thermal isolation plate having a thermal isolation plate aperture at the center thereof and a flexible heater having a rear surface and a flexible heater aperture at the center thereof; a double walled tube defining a coolant feed chamber and a coolant return chamber; said coolant feed chamber extending to and through the flow diverter aperture and terminating at the counter-distortion plate and the coolant return chamber extending to and through the thermal isolation backplate and terminating at the flow diverter; and a coolant feed and a coolant return exit at the rear of said flexible heater.

摘要翻译： 一种受控的曲率半球镜组件，包括：具有反射表面和后表面的可变形反射镜; 并从后表面降序; 反变形板; 分流器在其中心处具有流量分配器孔; 回流板在其中心具有回流孔; 在其中心具有热隔离板孔的热隔离板和在其中心处具有后表面和柔性加热器孔的柔性加热器; 限定冷却剂供给室和冷却剂返回室的双壁管; 所述冷却剂供给室延伸到并通过所述分流器孔并终止在所述逆变形板处，并且所述冷却剂返回室延伸到并穿过所述热隔离背板并终止于所述分流器; 以及在所述柔性加热器的后部的冷却剂进料和冷却剂返回出口。