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1. 发明授权

US5151814A Phased array for optical beam control 失效
标题翻译：光束控制相控阵
公开(公告)号：US5151814A
公开(公告)日：1992-09-29
申请号：US673175
申请日：1991-03-18
申请人： Jan Grinberg , Thomas R. O'Meara , Yuri Owechko , Melvin E. Pedinoff , Bernard H. Soffer
发明人： Jan Grinberg , Thomas R. O'Meara , Yuri Owechko , Melvin E. Pedinoff , Bernard H. Soffer
IPC分类号： G02F1/1343 , G02F1/1347 , G02F1/139 , G02F1/29
CPC分类号： G02B27/0087 , G02F1/292 , G02F1/134336 , G02F1/1347 , G02F1/1393 , G02F2203/01 , G02F2203/02 , G02F2203/24
摘要： An optical beam scanner incorporating an array of beam deflection elements commonly controlled to steer an optical beam impingent on the array is described. The beam steering elements are arranged in the array as individually controlled elements and the deflection of the beam is accomplished by setting the phase tilt and the phase offset of each element according to a calculation which removes modulo 2.pi. phase shift from the required position relative to a flat plane. Thus, the array elements can be thin and need only supply about 2 radians of phase shift. These elements may be incorporated in a planar array using beam deflection elements such as liquid crystal beam deflectors by choosing a drive scheme representing either a blazed array or a flat piston array. Operation may be designed for a large range of light wavelengths and the system may efficiently accommodate a combination of the blazed and flat piston techniques to obtain beam deflection characteristics otherwise unavailable by the exclusive use of each individual technique. By use of the liquid crystal phased array approach, rapid, high accuracy, large area beam deflection is possible without the necessity of any moving parts and with low power drive requirements. Phased arrays of the type described above may be arranged in successive parallel planes with a common beam axis to provide two-dimensional beam deflection.
摘要翻译：描述了一种光束扫描器，其包括通常被控制以引导照射在阵列上的光束的光束偏转元件阵列。光束操纵元件作为独立控制的元件布置在阵列中，并且通过根据计算来设置每个元件的相位倾斜和相位偏移来实现光束的偏转，该计算从相对于所需位置移除模2π相移平面飞机因此，阵列元件可以是薄的，并且仅需要提供约2弧度的相移。通过选择表示闪耀阵列或平坦活塞阵列的驱动方案，这些元件可以使用诸如液晶束偏转器的光束偏转元件并入平面阵列中。操作可以设计用于大范围的光波长，并且系统可以有效地适应闪耀和平坦活塞技术的组合以获得否则不能通过各自独占技术的独占使用而获得光束偏转特性。通过使用液晶相位阵列方法，可以快速，高精度，大面积的光束偏转，而不需要任何移动部件和低功率驱动要求。上述类型的相控阵列可以布置在具有共同波束轴的连续平行平面中，以提供二维波束偏转。

2. 发明授权

US4937539A Phased array for optical beam control 失效
公开(公告)号：US4937539A
公开(公告)日：1990-06-26
申请号：US420661
申请日：1989-10-10
申请人： Jan Grinberg , Thomas R. O'Meara , Yuri Owechko , Melvin E. Pedinoff , Bernard H. Soffer
发明人： Jan Grinberg , Thomas R. O'Meara , Yuri Owechko , Melvin E. Pedinoff , Bernard H. Soffer
IPC分类号： G02F1/1343 , G02F1/1347 , G02F1/139 , G02F1/29
CPC分类号： G02B27/0087 , G02F1/292 , G02F1/134336 , G02F1/1347 , G02F1/1393 , G02F2203/01 , G02F2203/02 , G02F2203/24
摘要： An optical beam scanner incorporating an array of beam deflection elements commonly controlled to steer an optical beam impingent on the array is described. The beam steering elements are arranged in the array as individually controlled elements and the deflection of the beam is accomplished by setting the phase tilt and the phase offset of each element according to a calculation which removes modulo 2.pi. phase shift from the required position relative to a flat plane. Thus, the array elements can be thin and need only supply about 2 radians of phase shift. These elements may be incorporated in a planar array using beam deflection elements such as liquid crystal beam deflectors by choosing a drive scheme representing either a blazed array or a flat piston array. Operation may be designed for a large range of light wavelengths and the system may efficiently accommodate a combination of the blazed and flat piston techniques to obtain beam deflection characteristics otherwise unavailable by the exclusive use of each individual technique. By use of the liquid crystal phased array approach, rapid, high accuracy, large area beam deflection is possible without the necessity of any moving parts and with low power drive requirements. Phased arrays of the type described above may be arranged in successive parallel planes with a common beam axis to provide two-dimensional beam deflection.

3. 发明授权

US4871232A Method and apparatus for ultra high frequency spectrum analysis 失效
标题翻译：用于超高频谱分析的方法和装置
公开(公告)号：US4871232A
公开(公告)日：1989-10-03
申请号：US130032
申请日：1987-12-07
申请人： Jan Grinberg , Emanuel Marom , Bernard H. Soffer , Thomas R. O'Meara , Adrian E. Popa
发明人： Jan Grinberg , Emanuel Marom , Bernard H. Soffer , Thomas R. O'Meara , Adrian E. Popa
IPC分类号： G01R23/17
CPC分类号： G01R23/17
摘要： A high frequency spectral analysis system and method operates by modulating an optical beam with a high frequency signal to be analyzed, and sampling the beam simultaneously at periodically spaced locations along its length. The sampled portions are then focused to a spectral mapping. In the preferred embodiment a beam is directed in a zigzag pattern through a plate, one surface of which is totally reflective and the opposite surface of which is partially reflective. Periodic parallel samples are obtained from the minor portions of the beam which are transmitted out of the plate through the partially reflective surface. The totally reflective surface is preferably formed as a series of cylindrical surfaces which focus the beam to small spots at the partially reflective surface, thereby permitting a higher spatial density of samples without overlapping. The plate thickness is selected so that the beam is sampled at the Nyquist rate for the highest frequency contained in the signal of interest.
摘要翻译：高频谱分析系统和方法通过用待分析的高频信号调制光束并且沿其长度在周期性间隔的位置同时采样光束来操作。然后将采样的部分聚焦到光谱映射。在优选实施例中，光束以锯齿形图案通过板，其一个表面是完全反射的，其相对表面是部分反射的。从束的少部分获得周期性的平行样品，其通过部分反射表面从板上传出。全反射表面优选地形成为将光束聚焦在部分反射表面处的小斑点的一系列圆柱形表面，从而允许更高的样品空间密度而不重叠。选择板厚度使得以包含在感兴趣信号中的最高频率的奈奎斯特速率采样波束。

4. 发明授权

US5048935A Method for adaptive correction of the phase non-uniformity of a liquid crystal light valve 失效
标题翻译：液晶光阀相位不均匀性的自适应校正方法
公开(公告)号：US5048935A
公开(公告)日：1991-09-17
申请号：US947575
申请日：1986-12-24
申请人： Uzi Efron , Bernard H. Soffer , Richard C. Lind , David M. Pepper , Thomas R. O'Meara
发明人： Uzi Efron , Bernard H. Soffer , Richard C. Lind , David M. Pepper , Thomas R. O'Meara
IPC分类号： G01J9/00 , G02B26/06
CPC分类号： G03H1/0005 , G01J9/00 , G02B26/06 , G03H1/2294 , G03H2001/0066 , G03H2225/32
摘要： Apparatus for compensating for inherent distortions in a modified liquid crystal light valve used in an integrated wavefront sensing and wavefront control system for laser optics. A main wavefront sensing and control system utilizes a liquid crystal light valve selected for response speed but having inherent surface non-linearities. A beam from an auxiliary laser is intermittently applied, while the main laser is blocked, to both the fast response LCLV of the main system and to a slower response LCLV of an associated correction system. The second LCLV system corrects for the non-linearities in the surface of the first LCLV and then maintains the stored correction signal for a decay interval which corresponds to several response times of the main LCLV, thus permitting the main LCLV system to perform fast correction of atmospheric aberrations in the laser beam wavefront unaffected by inherent surface non-linearities.
摘要翻译：用于补偿在用于激光光学的集成波前感测和波前控制系统中使用的改进的液晶光阀中的固有失真的装置。主波前感测和控制系统利用了选择响应速度但具有固有表面非线性的液晶光阀。来自辅助激光器的光束在主激光器被阻挡的同时被间歇地施加到主系统的快速响应LCLV和相关校正系统的较慢响应LCLV。第二LCLV系统校正第一LCLV的表面中的非线性，然后将存储的校正信号维持在对应于主LCLV的几个响应时间的衰减间隔，从而允许主LCLV系统执行快速校正激光束波前的大气像差不受固有表面非线性的影响。

5. 发明授权

US5051571A Cascaded adaptive optics system 失效
标题翻译：级联自适应光学系统
公开(公告)号：US5051571A
公开(公告)日：1991-09-24
申请号：US947569
申请日：1986-12-02
申请人： Wilbur P. Brown, Jr. , Thomas R. O'Meara , David M. Pepper , Uzi Efron , Bernard H. Soffer
发明人： Wilbur P. Brown, Jr. , Thomas R. O'Meara , David M. Pepper , Uzi Efron , Bernard H. Soffer
IPC分类号： G02B26/06
CPC分类号： G02B26/06
摘要： A cascaded adaptive optics system for correction of aberrations in a light beam. The system includes a plurality of spatial light modulators (SLMs) in a cascaded arrangement to provide an adaptive optics system characterized by wide range, rapid response, and high resolution. The spatial light modulators may be identical or have characteristics that are complementary in providing a combined output that advantageously corrects for aberrations. A conventional adaptive optics system such as a deformable mirror may be used as one or more of the SLMKs. Liquid crystal light valves (LCLVs) may be advantageously used as one or more of the SLMs in the invention. A single LCLV may be cascaded with itself in a multiple-pass configuration by means of suitable reflectors.
摘要翻译：用于校正光束中的像差的级联自适应光学系统。该系统包括多个级联布置的空间光调制器（SLM），以提供以宽范围，快速响应和高分辨率为特征的自适应光学系统。空间光调制器可以是相同的或具有在提供有利地校正像差的组合输出时互补的特征。诸如可变形反射镜的常规自适应光学系统可以用作SLMK中的一个或多个。液晶光阀（LCLV）可以有利地用作本发明中的一个或多个SLM。单个LCLV可以通过适当的反射器以多通道配置与其自身级联。

6. 发明授权

US5126876A Master oscillator power amplifier with interference isolated oscillator 失效
标题翻译：主振荡器功率放大器与干扰隔离振荡器
公开(公告)号：US5126876A
公开(公告)日：1992-06-30
申请号：US663277
申请日：1991-02-28
申请人： Thomas R. O'Meara
发明人： Thomas R. O'Meara
IPC分类号： H01S3/00 , H01S3/10 , H01S3/23
CPC分类号： H01S3/2333 , H01S3/0064 , H01S3/005 , H01S3/10076 , H01S3/2383
摘要： A master oscillator power amplifier (MOPA) system which isolates the master oscillator (MO) from the return amplified beam by dividing the return beam into two components, introducing a phase shift between the components, and recombining the phase shifted beam components through constructive interference into an output beam directed away from the MO. A destructive interference return output is directed back towards the MO, but is held to a negligible level by making the phase shift approximately equal to an odd number of half-wavelengths at the return beam wavelength. In the preferred embodiment a stimulated Brillouin scattering phase conjugate mirror (PCM) is used to direct the amplified beam for a second amplification pass, while a Mach-Zender interferometer transmits the beam both before and after double amplification. The original beam is replicated after its first path through the interferometer by having the interferometer phase shift also equal an integral number of wavelengths at the input beam wavelength, prior to frequency shifting by the PCM.

7. 发明授权

US4902980A Master-oscillator power-amplifier laser system 失效
标题翻译：主振荡器功率放大器激光系统
公开(公告)号：US4902980A
公开(公告)日：1990-02-20
申请号：US274740
申请日：1988-11-14
申请人： Thomas R. O'Meara
发明人： Thomas R. O'Meara
IPC分类号： H01S3/00 , H01S3/083 , H01S3/10 , H01S3/23
CPC分类号： H01S3/2333 , H01S3/0064 , H01S3/083 , H01S3/10076 , H01S3/2316
摘要： An improved phase conjugate master-oscillator power-amplifier laser system for providing a high-power low-distortion laser output beam. The system includes an improved oscillator such as a ring oscillator which rejects any of the output beam which is inadvertently fed back to the oscillator, thereby preventing unwanted oscillation. The system also includes an attenuator such as a spatial filter or an optical isolator that attenuates any amplified spontaneous emissions that may be reflected from the power amplifier to the oscillator, thereby preventing oscillator degradation that would otherwise result. The invention is particularly well-suited for a laser system which employs an SBS mirror for phase conjugation.
摘要翻译：一种改进的相位共轭主振荡器功率放大器激光系统，用于提供大功率低失真的激光输出光束。该系统包括改进的振荡器，例如环形振荡器，其拒绝任何不经意地反馈到振荡器的输出光束，从而防止不必要的振荡。该系统还包括衰减器，例如空间滤波器或光隔离器，其衰减可能从功率放大器反射到振荡器的任何放大的自发发射，从而防止否则将导致的振荡器衰减。本发明特别适用于采用SBS镜用于相位共轭的激光系统。

8. 发明授权

US4642582A Nonlinear delay line encoding/decoding arrangements 失效
标题翻译：非线性延迟线编码/解码装置
公开(公告)号：US4642582A
公开(公告)日：1987-02-10
申请号：US836201
申请日：1986-02-26
申请人： Thomas R. O'Meara
发明人： Thomas R. O'Meara
IPC分类号： G02F1/35 , H01S3/30
CPC分类号： G02F1/3534
摘要： Apparatus for encoding and decoding laser pulses, or the like. At least one laser source applied laser energy to a nonlinear material in a manner such that counter-propagating beams are applied to the material. These laser beams are spatially or temporally modulated in a predetermined manner. The modulation may be continuous, or discrete, amplitude or phase modulation. Another laser source provides a probe pulse which traverses the nonlinear material and interacts with the counter-propagating laser beams in a manner known as four-wave mixing. This process generates an encoded laser pulse whose modulation pattern is a function of the modulation of the counter-propagating beams. A decoded laser pulse is obtained by applying the encoded pulse to the apparatus and reversing the modulation of the counter-propagating laser beams.
摘要翻译：用于对激光脉冲进行编码和解码的装置等。至少一个激光源将激光能量施加到非线性材料，使得反向传播的光束被施加到材料上。这些激光束以预定方式进行空间或时间调制。调制可以是连续的或离散的振幅或相位调制。另一激光源提供探针脉冲，其穿过非线性材料并以称为四波混频的方式与反向传播的激光束相互作用。该过程产生编码的激光脉冲，其调制模式是反向传播光束的调制的函数。通过将编码脉冲施加到装置并反转反向传播的激光束的调制来获得解码的激光脉冲。

9. 发明授权

US3980879A Adaptive imaging telescope with nonlinear quadrant sensing and electro-optical phase shifting 失效
标题翻译：具有非线性象限感测和电光相移的自适应成像望远镜
公开(公告)号：US3980879A
公开(公告)日：1976-09-14
申请号：US482187
申请日：1974-06-24
申请人： Thomas R. O'Meara
发明人： Thomas R. O'Meara
IPC分类号： G02B26/06 , G01J1/20
CPC分类号： G02B26/06
摘要： An adaptive imaging telescope having nonlinear sensing means for detecting an optical image received thereby. The system comprises a phase shifter, positioned at the aperture of the telescope or at an image plane thereof. This system also includes a nonlinear image quality sensor optically coupled to the phase shifter, consisting of a quadrant nonlinear detector wherein each detector element of the quadrant detector is responsive to light from the optical image, the quadrant detector comprising nonlinear photocells or detectors whose plane is positioned at an image plane of the telescope. The photocells are connected to a network for providing image quality error signals. Analog circuits are provided to receive the sensor output and provide a closed-loop return to the phase shifter.
摘要翻译：一种自适应成像望远镜，具有用于检测由此接收的光学图像的非线性感测装置。该系统包括位移器，位于望远镜的孔或其图像平面处。该系统还包括光耦合到移相器的非线性图像质量传感器，其由象限非线性检测器组成，其中象限检测器的每个检测器元件响应于来自光学图像的光，该象限检测器包括非线性光电管或其平面为位于望远镜的图像平面。光电池连接到网络以提供图像质量误差信号。提供模拟电路以接收传感器输出并提供闭环返回到移相器。

10. 发明授权

US07262861B1 Ultrasound single-element non-contacting inspection system 失效
标题翻译：超声单元非接触检测系统
公开(公告)号：US07262861B1
公开(公告)日：2007-08-28
申请号：US10852782
申请日：2004-05-24
申请人： David M. Pepper , Thomas R. O'Meara
发明人： David M. Pepper , Thomas R. O'Meara
IPC分类号： G01B11/02
CPC分类号： G01B17/02 , G01B11/06 , G01N21/1702 , G01N29/043 , G01N29/2418 , G01N2291/02827 , G01N2291/02854 , G01N2291/0421
摘要： A laser ultrasonic inspection apparatus and method which enables remote sensing of thickness, hardness, temperature and/or internal defect detection is disclosed. A laser generator impinges a workpiece with light for generating a thermo-elastic acoustic reaction in a workpiece. A probe laser impinges the workpiece with an annularly-shaped probe light for interaction with the acoustic signal in the workpiece resulting in a modulated return beam. A photodetector having a sensitive region for detecting an annularly-shaped fringe pattern generated by an interaction of a reference signal and with the modulated return beam at said sensitive region.
摘要翻译：公开了能够远程检测厚度，硬度，温度和/或内部缺陷检测的激光超声波检查装置和方法。激光发生器用工件照射工件以在工件中产生热弹性声反应。探头激光器用环形探针光照射工件，以与工件中的声信号相互作用，从而产生调制的返回光束。一种光电检测器，具有用于检测通过参考信号的相互作用产生的环形条状图案的敏感区域和在所述敏感区域处的调制返回光束。

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