公开(公告)号：US20050185907A1

公开(公告)日：2005-08-25

申请号：US10786342

申请日：2004-02-25

申请人： Robert Byren ,  David Rockwell ,  Alexander Betin

发明人： Robert Byren ,  David Rockwell ,  Alexander Betin

IPC分类号： G02B6/02 ,  G02F1/35 ,  H01S3/10 ,  H01S5/14 ,  G02B6/20

CPC分类号： G02F1/3538 ,  G02B6/02347 ,  G02B6/02385 ,  G02F2202/32 ,  H01S3/10076 ,  H01S5/145

摘要： A phase conjugate mirror comprising a photonic band gap light guide and a stimulated Brillouin scattering medium disposed in operational relation thereto. In specific embodiments, the light guide is an optical fiber with a high index cladding transparent at a propagation wavelength and a hollow or solid core. The cladding is microstructured silica and supports guide modes through frustrated tunneling photonic band gap guidance or Bragg photonic band gap guidance. The fiber has an array of channels disposed around the core. In one embodiment, the fiber is disposed within a stimulated Brillouin scattering cell. In this embodiment, the medium is gas, gel, or liquid. In an alternative embodiment, the medium is a solid disposed at the core of the fiber. The invention provides a means of guiding light with a gas filled or solid core structure with high guiding efficiency, high reflection back into the medium, without disturbing the polarization state of the light as it propagates.

摘要翻译： 一种相位共轭反射镜，包括光子带隙光导和被布置在其中的布里渊散射介质。 在具体实施例中，光导是具有在传播波长处透明的高折射率包层和中空或实芯的光纤。 包层是微结构二氧化硅，通过挫折隧道光子带隙引导或布拉格光子带隙引导支持引导模式。 纤维具有围绕芯部设置的通道阵列。 在一个实施例中，光纤设置在受激布里渊散射单元内。 在该实施例中，介质是气体，凝胶或液体。 在替代实施例中，介质是设置在纤维芯部的固体。 本发明提供了一种将具有高引导效率的气体填充或实心芯结构引导光的方法，并将高反射回到介质中，而不会在光线传播时干扰光的偏振状态。

公开(公告)号：US20050063446A1

公开(公告)日：2005-03-24

申请号：US10666176

申请日：2003-09-19

申请人： Alexander Betin ,  Robin Reeder ,  Robert Byren

发明人： Alexander Betin ,  Robin Reeder ,  Robert Byren

IPC分类号： H01S3/00 ,  H01S3/08 ,  H01S3/10 ,  H01S3/23

CPC分类号： H01S3/2333 ,  H01S3/005 ,  H01S3/10023 ,  H01S3/10076 ,  H01S3/2316

摘要： A spatial filter adapted to increase the angular spread of non-conjugated energy in a beam and suppress this energy to improve the efficiency of a phase conjugate system. In the illustrative embodiment, the filter includes first and second lenses and an aberrator to increase the angular spread. In the specific embodiment, an opaque plate, with a pinhole aperture therethrough, is sandwiched between the lenses to suppress the non-conjugated energy. The aberrator may be implemented with an amplifier or other suitable mechanism. Likewise, the aperture may be replaced with a highly angle-selective thick Bragg grating or other suitable arrangement. A phase conjugate master oscillator/power amplifier laser architecture is also disclosed. In an illustrative embodiment, the novel architecture includes a master oscillator adapted to output a laser beam; a power amplifier beam line in optical alignment with the beam; a mechanism for creating a beam having phase conjugate energy and non-conjugated energy; and at least one inventive spatial filter in alignment with the amplifier. The inventive filter is adapted to increase the angular spread of non-conjugated energy in a beam and suppress this energy to improve the efficiency of the system. In a specific implementation, the beamline includes plural amplifiers, each with one of the novel spatial filters disposed therebetween.

摘要翻译： 一种空间滤波器，适于增加光束中非共轭能量的角度扩展，并抑制该能量以提高相位共轭系统的效率。 在说明性实施例中，滤光器包括第一透镜和第二透镜以及增大角度扩展的像差器。 在具体实施例中，具有针孔的透明板被夹在透镜之间以抑制非共轭能。 像差仪可以用放大器或其他合适的机构实现。 类似地，孔可以用高角度选择性的布拉格光栅或其他合适的布置代替。 还公开了相位共轭主振荡器/功率放大器激光器架构。 在说明性实施例中，新颖的架构包括适于输出激光束的主振荡器; 与光束对准的功率放大器光束线; 用于产生具有相位共轭能量和非共轭能量的光束的机构; 以及与放大器对准的至少一个本发明的空间滤波器。 本发明的滤波器适于增加光束中非共轭能量的角度扩展，并且抑制该能量以提高系统的效率。 在具体实现中，波束线包括多个放大器，每个具有设置在其间的新颖的空间滤波器之一。

公开(公告)号：US20070242714A1

公开(公告)日：2007-10-18

申请号：US11404338

申请日：2006-04-14

申请人： David Sumida ,  Robert Byren ,  Michael Ushinsky

发明人： David Sumida ,  Robert Byren ,  Michael Ushinsky

IPC分类号： H01S3/17

CPC分类号： H01S3/0612 ,  H01S3/061 ,  H01S3/1618 ,  H01S3/1643

摘要： A material having a surface and a dopant in the material distributed whereby the material has a spatially variant optical flux density profile. In accordance with the invention, tailored non-uniform gain profiles within a Yb:YAG laser component (rod, slab, disc, etc.) are achieved by a spatial material modification in the spatially masked pre-forms. High temperature-assisted reduction leads to the coordinate-dependent gain profiles, which are controlled by the topology of the deposited solid masks. The gain profiles are obtained by reducing the charge state of the laser-active trivalent Yb3+ ions into inactive divalent Yb2+ ions. This valence conversion process is driven by mass transport of ions and oxygen vacancies. These processes, in turn, affect the dopant distribution throughout the surface and bulk laser crystal. By reducing proportionally more Yb3+ ions at the unmasked areas of component, than in the masked areas, the coordinate-dependent or spatially-controlled gain profiles are achieved. Preferred masking materials are high temperature ceramic glazes and glasses. The masking includes the fabrication of frit, mixing this frit with de-ionized water to form slurry, deposition of the slurry on the surface of laser component or pre-form, and a heat treatment (firing) of the deposited layer. The invention can be used for the fabrication of laser rods, slabs, etc. with various concentrations and spatial localizations of dopants.

摘要翻译： 在材料中具有表面和掺杂剂的材料被分配，由此材料具有空间上不同的光通量密度分布。 根据本发明，Yb：YAG激光器部件（棒，板，盘等）中的定制的不均匀增益分布通过在空间掩蔽的预成型件中的空间材料修改来实现。 高温辅助还原导致坐标依赖增益曲线，其由沉积的固体掩模的拓扑结构来控制。 通过将激光活性三价Yb 3+ +离子的电荷状态降低到无活性的二价Yb 2+离子中来获得增益曲线。 该价电子转化过程由离子和氧空位的质量传递驱动。 这些过程又影响整个表面和体激光晶体的掺杂剂分布。 通过在组件的未屏蔽区域比在掩蔽区域中成比例地减少更多的Yb + 3 + +离子，实现了坐标依赖或空间控制的增益曲线。 优选的掩蔽材料是高温陶瓷釉料和玻璃。 掩模包括制造玻璃料，将该玻璃料与去离子水混合以形成浆料，将浆料沉积在激光部件的表面上或预成型，以及沉积层的热处理（烧制）。 本发明可用于制造具有各种浓度和掺杂剂的空间定位的激光棒，板坯等。

公开(公告)号：US20060022115A1

公开(公告)日：2006-02-02

申请号：US10902624

申请日：2004-07-29

申请人： Robert Byren

发明人： Robert Byren

IPC分类号： G01J1/20

CPC分类号： G02B26/06 ,  G01J1/0266 ,  G01J9/00

摘要： A beam control system and method: The inventive system includes, an arrangement for receiving a first beam of electromagnetic energy; measuring wavefront aberrations in the first beam with a wavefront sensor; and removing global tilt from the measured wavefront aberrations to provide higher order aberrations for beam control. In the illustrative embodiment, the invention uses a traditional (quad-cell) Shack-Hartmann wavefront sensor to measure wavefront aberrations. An adaptive optics processor electronically removes the global tilt (angular jitter) from this measurement leaving only the higher-order Zernike components. These higher-order aberrations are then applied to wavefront control elements, such as deformable mirrors or spatial light modulators that correct the tracker image and apply a conjugate distortion to the wavefront of the outgoing HEL beam. A track error (angular jitter) component is supplied by a separate fine track sensor. This jitter error is then applied by the adaptive optics processor to a fast steering mirror, which corrects jitter in the tracker image and applies a compensating distortion to the LOS of the HEL beam.

摘要翻译： 光束控制系统和方法：本发明的系统包括：用于接收第一电磁能束的装置; 用波前传感器测量第一光束中的波前像差; 并从测量的波前像差中去除全局倾斜，以提供光束控制的高阶像差。 在说明性实施例中，本发明使用传统（四单元）Shack-Hartmann波前传感器来测量波前像差。 自适应光学处理器从该测量中电子地去除全局倾斜（角度抖动），仅留下高阶Zernike分量。 然后将这些较高阶像差应用于波前控制元件，例如校正跟踪器图像并将共轭失真应用于输出HEL波束的波阵面的可变形反射镜或空间光调制器。 轨道误差（角度抖动）分量由单独的细轨道传感器提供。 然后，该自适应光学处理器将该抖动误差应用于快速导向镜，其校正跟踪器图像中的抖动，并将补偿失真应用于HEL波束的LOS。

公开(公告)号：US20050111496A1

公开(公告)日：2005-05-26

申请号：US10720328

申请日：2003-11-24

申请人： Robin Reeder ,  David Filgas ,  Robert Byren

发明人： Robin Reeder ,  David Filgas ,  Robert Byren

IPC分类号： H01S3/00 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/107 ,  H01S3/115 ,  H01S3/16 ,  H01S3/10

CPC分类号： H01S3/08059 ,  H01S3/005 ,  H01S3/0606 ,  H01S3/08072 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/0941 ,  H01S3/107 ,  H01S3/115 ,  H01S3/1618 ,  H01S3/1643

摘要： A laser resonator for generating a laser beam having beam quality along two transverse axes that is determined primarily by the mode discrimination characteristics of one axis. The apparatus including a means for providing a collimated beam of electromagnetic energy with a predetermined orientation with respect to a line of sight thereof, and, a means for rotating the beam such that a transverse mode selection therefor is the same for two orthogonal directions thereof. The first means includes a slab laser having principal axes, and the second means includes a porro prism or a Benson prism. The prism is rotated 45 degrees about the line of sight with respect to the slab axes. The beam is rotated through successive round trip passes through the slab. A telescope, or an anamorphic telescope may be disposed between the slab and the prism. The resonator has a high aspect ratio slab lasing medium with a first and a second end that emit a laser beam. An aperture stop with a narrow transverse dimension and an orthogonal wide transverse dimension defines the laser beam profile. The slab itself may define the aperture stop. A first reflector, is aligned to reflect the laser beam emitted from one end of the slab back into the slab, and thereby define a first end of a resonant cavity. An anamorphic telescope is aligned to receive and reshape the laser beam profile to be substantially symmetrical about its transverse axes. The beam profile of the reshaped laser beam is rotated 90° and reflected, by a second reflector, back into the telescope, defining the second end of the resonator. The reflectors may be porro prisms, mirrors, or Benson prisms. Polarization out-couplers are used in conjunction with electro-optic Q-switches to out-couple-laser energy. The slab may be solid state Yb:YAG.

摘要翻译： 一种激光谐振器，用于产生主要由一个轴的模式识别特性确定的沿着两个横轴的光束质量的激光束。 该装置包括用于提供相对于其视线具有预定取向的准直光束的电磁能量的装置，以及用于旋转光束的装置，使得其横向模式选择在其两个正交方向上是相同的。 第一装置包括具有主轴的平板激光器，第二装置包括孔棱镜或本森棱镜。 棱镜相对于平板轴线的视线旋转45度。 梁通过连续的往返行程通过板坯旋转。 望远镜或变形望远镜可以设置在平板和棱镜之间。 谐振器具有高纵横比的板坯激光介质，其具有发射激光束的第一和第二端。 具有窄横向尺寸和正交宽横向尺寸的孔径光阑限定了激光束轮廓。 板本身可以限定孔径光阑。 对准第一反射器以将从板坯的一端发射的激光束反射回到板坯中，从而限定谐振腔的第一端。 对准变形望远镜以接收和重新形成激光束轮廓，使其基本上对称于其横向轴线。 重新配置的激光束的光束轮廓旋转90°，并通过第二反射器反射回限定谐振器的第二端的望远镜。 反射镜可以是波棱棱镜，镜子或Benson棱镜。 极化耦合器与电光Q开关结合使用以耦合激光能量。 板坯可以是固态Yb：YAG。

公开(公告)号：US20050057654A1

公开(公告)日：2005-03-17

申请号：US10650212

申请日：2003-08-28

申请人： Robert Byren

发明人： Robert Byren

IPC分类号： G01S7/481 ,  G01S17/00 ,  G01S17/89 ,  G01S17/93 ,  G01C3/08 ,  H04N5/225

CPC分类号： G01S17/895 ,  G01S7/481 ,  G01S7/4817

摘要： This invention uses a real-time holographic medium to record the amplitude and phase information collected from a moving platform at the aperture plane of a side-looking optical sensor over the collection time. A back-scan mirror is used to compensate platform motion during the synthetic aperture integration time. Phase errors caused by a nonlinear platform motion are compensated by controlling the phase offset between the illumination beam and the reference beam used to write the hologram based on inertial measurements of the flight path and the sensor line-of-sight pointing angles. In the illustrative embodiment, a synthetic aperture ladar (SAL) imaging system is mounted on a mobile platform. The system is adapted to receive a beam of electromagnetic energy; record the intensity and phase pattern carried by the beam; and store the pattern to compensate for motion of the platform relative to an external reference. In the illustrative embodiment, the image is stored as a holographic image. The system includes a back-scan mirror, which compensates the stored holographic pattern for motion of the platform. The medium and back-scan mirror may be replaced with a digital camera and one-dimensional and two-dimensional arrays may be used. In a specific embodiment, a two-dimensional array is used with a time delay and integration (TDI) scheme, which compensates for motion of the platform in the storage of the optical signals. In an alternative embodiment, a back-scanning mirror is used to compensate for motion of the platform. Consequently, the interference pattern between a relayed image of the aperture plane and a reference beam is continuously stored. In this embodiment, the instantaneous location of the received beam on the recording medium is controlled to compensate for motion of the platform.

摘要翻译： 本发明使用实时全息介质在收集时间内记录在侧视光学传感器的孔径平面处从移动平台收集的振幅和相位信息。 在合成孔径积分时间期间，使用后扫描镜来补偿平台运动。 由非线性平台运动引起的相位误差是通过控制用于写入全息图的照明光束和参考光束之间的相位偏移来补偿的，这是基于飞行路径和传感器视线指向角的惯性测量。 在说明性实施例中，合成孔径（SAL）成像系统安装在移动平台上。 该系统适于接收一束电磁能; 记录光束承载的强度和相位图; 并存储该模式以补偿平台相对于外部参考物的运动。 在说明性实施例中，图像被存储为全息图像。 该系统包括反向扫描镜，其补偿存储的全息图案以用于平台的运动。 可以用数字照相机替换介质和背面扫描镜，并且可以使用一维和二维阵列。 在具体实施例中，二维阵列与时间延迟和积分（TDI）方案一起使用，其补偿平台在光信号存储中的运动。 在替代实施例中，使用反向扫描镜来补偿平台的运动。 因此，连续地存储孔径平面的中继图像与参考光束之间的干涉图案。 在该实施例中，控制接收光束在记录介质上的瞬时位置，以补偿平台的运动。