公开(公告)号：WO2016028386A1

公开(公告)日：2016-02-25

申请号：PCT/US2015/037551

申请日：2015-06-24

Applicant: RAYTHEON COMPANY

Inventor： BETIN, Alexander, A. ,  SHKUNOV, Vladimir, V.

IPC: H04B10/118

CPC classification number: H04B10/112 ,  H04B10/118

Abstract: A method and system for reducing optical signal fading in an optical communication system include: dynamically obtaining turbulence-induced divergence and deviations of pointing direction for the atmosphere where an optical signal to be transmitted through; generating a single-transverse-mode laser beam of a predetermined diameter as the optical signal; dynamically varying the diameter of the laser beam to match the obtained turbulence-induced divergence of the atmosphere with a backtrack pointing direction; and transmitting the laser beam with varying diameter to a remote transceiver, as the optical signal.

Abstract translation: 一种用于减少光通信系统中的光信号衰落的方法和系统包括：动态地获得待传输光信号的大气的湍流引起的指向方向偏差; 产生预定直径的单横模激光束作为光信号; 动态地改变激光束的直径以使所获得的湍流引起的大气的偏差与回溯指向方向相匹配; 并将具有变化的直径的激光束作为光信号传输到远程收发器。

公开(公告)号：WO2006041444A1

公开(公告)日：2006-04-20

申请号：PCT/US2004/031257

申请日：2004-09-22

Applicant: RAYTHEON COMPANY

Inventor： BETIN, Alexander, A. ,  REEDER, Robin, A. ,  BYREN, Robert, W.

IPC: H01S3/10

CPC classification number: H01S3/10076 ,  H01S3/2316 ,  H01S3/2333 ,  H01S5/005 ,  H01S5/0064

Abstract: 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 (81, 83) and an aberrator (86) to increase the angular spread. In the specific embodiment, an opaque plate (84), with a pinhole aperture (82) 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.

Abstract translation: 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，滤波器包括第一和第二透镜（81,83）和增大角度扩展的像差器（86）。 在具体实施例中，具有针孔（82）穿过其的不透明板（84）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：WO2003063306A1

公开(公告)日：2003-07-31

申请号：PCT/US2002/002205

申请日：2002-01-24

Applicant: RAYTHEON COMPANY

Inventor： BRUESSELBACH, Hans, W. ,  BETIN, Alexander, A. ,  SUMIDA, David, S.

IPC: H01S3/06

CPC classification number: H01S3/0606 ,  H01S3/042 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/1618 ,  H01S3/1643

Abstract: A high gain optical amplifier and method. Generally, the inventive amplifier includes a first crystal (14) having an axis (14) and a first index of refraction and a second crystal (16) bonded to teh first crystal (12) about the axis (14) and having a second indey of refraction. The first index is higher that the second index such that light through the first crystal is totally internally reflected. In the illustrative embodiment, the first crystal (12) is Yb: YAG with an index of approximately 1.82m the second crystal (16) is Sapphire with an index of approximately 1.78, and the axis (14) is the propagation axis. The invention is, in its perferred embodiment, a light guide fabricated out of crystalline materials, diffusion bonded together. If the core of the light guide is doped with laser ions, high gain amplifiers made be designed and operable over a large etendue. With a judicious choice of the laser crystal and cladding materials, shape, and bonding technique, the guided amplifier is much less susceptible to parasitic oscillation than amplifiers constructed in accordance with conventional teachings. The clad core is also able to handle larger thermal load without breakage than can an unclad core.

Abstract translation: 高增益光放大器和方法。 通常，本发明的放大器包括具有轴线（14）和第一折射率的第一晶体（14）和围绕轴线（14）接合到第一晶体（12）的第二晶体（16），并且具有第二连接 的折射。 第一指数高于第二指数，使得通过第一晶体的光完全内部反射。 在说明性实施例中，第一晶体（12）是Yb：YAG，具有约1.82μm的指数，第二晶体（16）是索引大约为1.78的蓝宝石，并且轴线（14）是传播轴。 本发明在其延伸的实施例中是由结晶材料制成的光导，扩散粘合在一起。 如果光导的核心掺杂有激光离子，则高增益放大器可以在大的光通量上被设计和操作。 通过明智地选择激光晶体和包层材料，形状和结合技术，与根据常规教导构建的放大器相比，引导放大器不太容易发生寄生振荡。 包芯可以处理较大的热负载，而不会破损。

公开(公告)号：WO2006130180A3

公开(公告)日：2006-12-07

申请号：PCT/US2005/047624

申请日：2005-12-20

Applicant: RAYTHEON COMPANY

Inventor： USHINSKY, Michael ,  BETIN, Alexander, A. ,  GENTILMAN, Richard ,  HOGAN, Patrick, K.

IPC: H01S3/06

Abstract: A glaze encapsulated solid-state laser component (30). The novel laser component (30) includes a core (10) and a cladding (32) of ceramic glaze disposed on a surface of the core (10). In an illustrative embodiment, the core (10) is fabricated from a laser gain medium and the cladding material is a multi-oxide eutectic ceramic glaze having a refractivity slighter lower than the refractivity of the gain medium, such that the glaze layer forms a step-index refractivity interface cladding that can effectively suppress parasitic oscillations in the core gain medium. The glaze cladding (32) can be applied by coating the core (10) with the glaze and then firing the glaze coated core, or by fabricating pre-formed cladding strips from the ceramic glaze in a first firing cycle, mounting the pre-formed strips to the core (10), and then fusing the pre-formed strips to the core (10) in a secondary firing cycle.

公开(公告)号：WO2005073766A1

公开(公告)日：2005-08-11

申请号：PCT/US2004/041910

申请日：2004-12-14

Applicant: RAYTHEON COMPANY

Inventor： EFIMOV, Oleg, M. ,  BETIN, Alexander, A.

IPC: G02B6/34

CPC classification number: G02B6/29362 ,  G02B27/283 ,  G02B27/288 ,  H04J14/02 ,  H04J14/06

Abstract: An optical arrangement (10) comprising a first beam splitter (12) for transmitting light of a first polarization, to provide a first beam, and reflect light of a second polarization; a first spectral filter (16) in optical alignment with the first beam, the filter (16) being adapted to return a second beam thereto; and a first polarization rotator (14) in optical alignment with the beam splitter (12) and the spectral filter (16) for effecting a rotation of the polarization of the second beam relative to the first beam whereby the second beam has the second polarization and is reflected by the beam splitter (12). In a specific implementation, the spectral filter (12) may be a Bragg grating, a quarter-wave plate (22), a Faraday rotator (32) or other suitable device. If a Faraday rotator is used, a polarization adjuster (34) is used in optical alignment therewith. A number of alternative embodiments are disclosed. In a first alternative embodiment, a second polarization rotator (44) is disposed in optical alignment with the first beam splitter (12) for effecting a rotation of the polarization of the light reflected from the beam splitter (12) to provide a third beam. In one variant a second spectral filter (48) is disposed in alignment with the second polarization rotator (44). In another variant, the first spectral filter (52) is adapted to receive the third beam. In another embodiment, a second beam splitter (68) is disposed between the second Faraday rotator (64) and the spectral filter (16).

Abstract translation: 一种光学装置（10），包括用于透射第一偏振光的第一分束器（12），以提供第一光束并反射第二偏振光; 与所述第一光束对准的第一光谱滤光器（16），所述滤光片（16）适于将第二光束返回到其上; 以及与分束器（12）和光谱滤光器（16）光学对准的第一偏振旋转器（14），用于相对于第一光束实现第二光束的偏振的旋转，由此第二光束具有第二偏振， 被分束器（12）反射。 在具体实现中，光谱滤波器（12）可以是布拉格光栅，四分之一波片（22），法拉第旋转器（32）或其它合适的装置。 如果使用法拉第旋转器，则偏振调节器（34）用于与其对准。 公开了许多替代实施例。 在第一替代实施例中，第二偏振旋转器（44）被设置为与第一分束器（12）光学对准，以实现从分束器（12）反射的光的偏振的旋转以提供第三光束。 在一个变型中，与第二偏振旋转器（44）对准设置第二光谱滤光器（48）。 在另一个变型中，第一光谱滤波器（52）适于接收第三光束。 在另一个实施例中，第二分束器（68）设置在第二法拉第旋转器（64）和光谱滤光器（16）之间。

公开(公告)号：WO2004098001A3

公开(公告)日：2004-11-11

申请号：PCT/US2004/013124

申请日：2004-04-28

Applicant: RAYTHEON COMPANY

Inventor： REEDER, Robin, A. ,  MATTHEWS, Steven, C. ,  BETIN, Alexander, A.

IPC: H01S3/06

Abstract: A solid-state laser beam amplifier with integrated reflective surface. A rectangular slab gain medium (50) receives a first portion of an input laser beam along a first zigzag reflection path within the slab. The gain medium (50) also receives a second portion of the input laser beam that has been reflected from an integral reflective surface (56) such that the two portions traverse the gain medium (50) along complementary zigzag paths. The zigzag paths are defined by total internal reflection of the beam portions as they propagate through the gain medium slab (50). A similar reflective surface (58) may be positioned relative to the exit end of the gain medium slab (50), which redirects all of the output beam portions in a parallel direction. The gain medium (50) may be Ytterbium or neodymium doped yttrium aluminum garnet. The gain medium (50) may be formed as a high aspect ration rectangular slab and may be clad with sapphire. The reflective surfaces may function by total internal reflection or may employ a reflective material, such as a dielectric coating. A section of undoped medium (52) may be applied to the entrance or exit end of the gain medium slab to control angles of incidence and refraction.

公开(公告)号：WO2010056253A1

公开(公告)日：2010-05-20

申请号：PCT/US2008/083734

申请日：2008-11-17

Applicant: RAYTHEON COMPANY ,  SHKUNOV, Vladimir, V. ,  BETIN, Alexander, A. ,  ROCKWELL, David, A.

Inventor： SHKUNOV, Vladimir, V. ,  BETIN, Alexander, A. ,  ROCKWELL, David, A.

IPC: H01S3/067 ,  H01S3/063

CPC classification number: H01S3/06704 ,  H01S3/0632 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06745 ,  H01S3/08059 ,  H01S3/08081

Abstract: A planar laser gain medium (30) and laser system (100) The laser gain medium (30) includes an active core (32) having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings (36, 38) adapted to form reflective boundaries at fast axis boundaries of the core, and a material (50, 52) adapted to minimize reflections at slow axis boundaries of the core. In the illustrative embodiment, the laser gain medium (30) is an optical fiber. The core (32) and signal claddings (36, 38) form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium (30) is employed as a laser oscillator, a high reflectivity mirror (102) and an outcoupler (104) are positioned at opposite ends of the core (32) to form a laser resonator adapted to control modes in the slow axis direction

Abstract translation: 平面激光增益介质（30）和激光系统（100）激光增益介质（30）包括具有快轴尺寸和慢轴尺寸的高纵横比横截面的有源芯（32），信号 适于在芯的快轴边界处形成反射边界的包层（36,38）以及适于最小化芯的慢轴边界处的反射的材料（50,52）。 在说明性实施例中，激光增益介质（30）是光纤。 芯（32）和信号包层（36,38）形成适于控制在快轴方向上传播的模式的波导。 当激光增益介质（30）被用作激光振荡器时，高反射镜（102）和输出耦合器（104）位于磁芯（32）的相对端，以形成适于控制 慢轴方向

公开(公告)号：WO2007084111A2

公开(公告)日：2007-07-26

申请号：PCT/US2005/047620

申请日：2005-12-20

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BETIN, Alexander, A.

CPC classification number: H01S3/0941 ,  F41H13/00 ,  H01S3/0404 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0608 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/07 ,  H01S3/094053 ,  H01S3/094057 ,  H01S3/094084 ,  H01S3/102 ,  H01S3/1026 ,  H01S3/1608 ,  H01S3/1643

Abstract: A laser system and method. The inventive laser includes an annular gain medium; a source of pump energy; and an arrangement for concentrating energy from the source on the gain medium. In a more specific implementation, a mechanism is included for rotating the gain medium to effect extraction of pump energy and cooling. In the illustrative embodiment, the pump source is a diode array. Energy from the array is coupled to the medium via an array of optical fibers. The outputs of the fibers are input to a concentrator that directs the pump energy onto a pump region of the medium. In the best mode, plural disks of gain media are arranged in an offset manner to provide a single resonator architecture. First and second mirrors are added to complete the resonator, hi accordance with the inventive teachings, a method for pumping and cooling a laser is taught. In the illustrative embodiment, the inventive method includes the steps of providing a gain medium; pumping energy into a region of the gain medium; moving the medium; extracting energy from the region of the medium; and cooling region of the medium.

Abstract translation: 激光系统和方法。 本发明的激光器包括环形增益介质; 泵浦能源; 以及用于将来自源的能量集中在增益介质上的布置。 在更具体的实施方案中，包括用于旋转增益介质以实现泵能量和冷却的提取的机构。 在说明性实施例中，泵浦源是二极管阵列。 来自阵列的能量经由光纤阵列耦合到介质。 纤维的输出被输入到将泵能量引导到介质的泵区域上的浓缩器。 在最佳模式中，以偏移方式布置增益介质的多个磁盘以提供单个谐振器结构。 添加第一和第二反射镜以完成谐振器。根据本发明的教导，教导了用于泵送和冷却激光器的方法。 在说明性实施例中，本发明的方法包括提供增益介质的步骤; 将能量泵送到增益介质的区域中; 移动媒体; 从介质区域提取能量; 和介质的冷却区域。

公开(公告)号：WO2003043145A1

公开(公告)日：2003-05-22

申请号：PCT/US2002/036333

申请日：2002-11-12

Applicant: RAYTHEON COMPANY

Inventor： BETIN, Alexander, A. ,  GRIFFIN, William, S.

IPC: H01S3/042

CPC classification number: H01S3/042 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/10076 ,  H01S3/2316 ,  H01S3/2333

Abstract: A system for removing waste energy in the form of sensible heat and fluorescent energy from a solid state laser medium (34) having a broad surface. The system includes a manifold (60) disposed about the laser medium (34) having a plurality of inlet jets (66) interspersed with a plurality of exhaust orifices (64). Coolant fluid is circulated through the manifold (60). The fluid is forced through the plurality of inlet jets (66) to impinge the broad face of the laser medium (34), thereby transferring waste energy by convection from the laser medium (34) to the coolant fluid. The coolant fluid is further circulated to exhaust the pumphead manifold (60) through the plurality of exhaust orifices (64). The fluorescent energy, which is radiated from the laser medium (34), is converted to sensible heat by an absorber (72) disposed within the coolant adjacent to the laser medium (34). The coolant then removes the converted heat by forced convection. The absorber (72) can be suspended particles in the coolant fluid or a porous material supported in the manifold (60) at some distance from the laser medium (34).

Abstract translation: 一种用于从具有宽表面的固态激光介质（34）去除以显热和荧光能形式的废能的系统。 该系统包括围绕激光介质（34）设置的歧管（60），其具有散布有多个排气孔（64）的多个入口射流（66）。 冷却剂流体通过歧管（60）循环。 流体被迫通过多个入口射流（66）以撞击激光介质（34）的宽面，从而通过对流从激光介质（34）向冷却剂流体传送废能。 冷却剂流体进一步循环以通过多个排气孔（64）排出泵头歧管（60）。 从激光介质（34）辐射的荧光能量被设置在与激光介质（34）相邻的冷却剂内的吸收体（72）转换成显热。 冷却液然后通过强制对流除去转换的热量。 吸收器（72）可以是在与激光介质（34）相距一定距离处的悬浮颗粒在冷却剂流体中或支撑在歧管（60）中的多孔材料。