公开(公告)号：WO2007084111A3

公开(公告)日：2008-03-06

申请号：PCT/US2005047620

申请日：2005-12-20

Applicant: RAYTHEON CO

Inventor： SPARIOSU KALIN ,  BETIN ALEXANDER A

IPC: H01S3/083 ,  H01S3/042 ,  H01S3/06 ,  H01S3/0941

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 (37); a source of pump energy (13, 15, 17), and an arrangement (25, 27, 29, 31) for concentrating energy from the source on the gain medium. In a more specific implementation, a mechanism is included for rotating the gain medium (37) 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 (25, 27, 29). The outputs of the fibers are input to a concentrator (31) that directs the pump energy onto a pump region of the medium (37). In the best mode, plural disks (30, 32, 34) of gain media are arranged in an offset manner to provide a single resonator architecture. First (46) and second (48) mirrors are added to complete the resonator. In 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（37）; 泵能量源（13,15,17）以及用于将来自源的能量集中在增益介质上的装置（25,27,29,31）。 在更具体的实施方案中，包括用于旋转增益介质（37）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。 来自阵列的能量通过光纤阵列（25,27,29）耦合到介质。 纤维的输出被输入到将泵浦能量引导到介质（37）的泵浦区域上的浓缩器（31）。 在最佳模式中，增益介质的多个磁盘（30,32,34）以偏移方式布置以提供单个谐振器结构。 添加第一（46）和第二（48）个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; 将能量泵入增益介质的区域; 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：WO2006130180A2

公开(公告)日：2006-12-07

申请号：PCT/US2005047624

申请日：2005-12-20

Applicant: RAYTHEON CO

Inventor： USHINSKY MICHAEL ,  BETIN ALEXANDER A ,  GENTILMAN RICHARD ,  HOGAN PATRICK K

IPC: H01S3/06

CPC classification number: H01S3/0612 ,  H01S3/0602 ,  H01S2301/02

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.

Abstract translation: 釉胶封固态激光组件（30）。 新型激光组件（30）包括芯（10）和设置在芯（10）的表面上的陶瓷釉的包层（32）。 在说明性的实施例中，芯（10）由激光增益介质制成，并且包层材料是具有比增益介质的折射率低的折射率变浅的多氧化物共晶陶瓷釉，使得釉层形成步骤 指示折射率界面包层，可以有效地抑制核心增益介质中的寄生振荡。 釉料包层（32）可以通过用釉料涂覆芯（10），然后烧制釉面芯，或者通过在第一次烧制循环中从陶瓷釉中制造预形成的包层条来施加，安装预成形 将其带到芯（10）上，然后在二次烧制循环中将预成形的条固定到芯（10）上。

公开(公告)号：WO2007046918A2

公开(公告)日：2007-04-26

申请号：PCT/US2006029383

申请日：2006-07-27

Applicant: RAYTHEON CO

Inventor： BETIN ALEXANDER A ,  SHKUNOV VLADIMIR

IPC: H01S3/00 ,  H01S3/10 ,  H01S3/23

CPC classification number: H01S3/2333 ,  H01S3/005 ,  H01S3/0085 ,  H01S3/08095 ,  H01S3/10076

Abstract: A high extraction efficiency laser system (30). The novel laser system (30) includes a master oscillator (32) for providing a laser beam, an amplifier (18) adapted to amplify the laser beam, and an aberrator (42) for aberrating the laser beam to prevent the formation of caustic intensity patterns within the amplifier (18). In an illustrative embodiment, the laser system (30) also includes a depolarizer (44) disposed between the master oscillator (32) and the amplifier (18) to reduce the contrast of speckle intensity patterns in the amplifier (18), and a mechanism (46) adapted to rotate or otherwise move the aberrator (42) to time-vary the aberrations in the beam in order to increase the spatial homogenization of saturation and extraction patterns in the amplifier (18). In a preferred embodiment, the coherence length of the beam is also shortened to reduce interference fringes in the amplifier.

Abstract translation: 高提取效率激光系统（30）。 新颖的激光系统（30）包括用于提供激光束的主振荡器（32），适于放大激光束的放大器（18）和用于使激光束异像化以形成苛性强度的像差仪（42） 放大器（18）内的图案。 在说明性实施例中，激光系统（30）还包括设置在主振荡器（32）和放大器（18）之间的去偏振器（44），以减小放大器（18）中散斑强度图案的对比度， （46），其适于旋转或以其它方式移动所述像差仪（42）以对所述光束中的像差进行时间变化，以便增加放大器（18）中的饱和度和提取图案的空间均匀度。 在优选实施例中，光束的相干长度也被缩短以减小放大器中的干涉条纹。

公开(公告)号：WO03107495A2

公开(公告)日：2003-12-24

申请号：PCT/US0318545

申请日：2003-06-13

Applicant: RAYTHEON CO

Inventor： BYREN ROBERT W ,  GRIFFIN WILLIAM S ,  BETIN ALEXANDER A

IPC: H01S3/04 ,  H01S3/042 ,  H01S3/0941 ,  H01S3/00

CPC classification number: H01S3/04 ,  H01S3/042 ,  H01S3/0941

Abstract: A laser cooling apparatus and method. Generally, the inventive apparatus includes a mechanism for transporting sensible thermal energy from a solid state laser and for communicating waste fluorescent radiation therefrom as well. In the illustrative embodiment, the apparatus includes an optically transparent manifold (10) with an inlet port (12), an exhaust port (19) and a plurality of spray nozzles (16) therebetween adapted to direct a cooling fluid on the laser medium (20) of a laser (30). In addition, the optically transparent manifold (10) is used to permit waste fluorescent radiation to escape the confines of the laser and cooling system means such that said fluorescent radiation may be optically directed to an external heat sink such as free space.

Abstract translation: 一种激光冷却装置及方法。 通常，本发明的装置包括用于传输来自固体激光器的敏感热能并用于从其传输废物荧光辐射的机构。 在说明性实施例中，该装置包括具有入口（12），排气口（19）和其间的多个喷嘴（16）的光学透明歧管（10），适于将冷却流体引导到激光介质上 20）。 此外，光学透明歧管（10）用于允许废物荧光辐射逃离激光和冷却系统装置的限制，使得所述荧光辐射可以被光学地定向到诸如自由空间的外部散热器。

公开(公告)号：WO2004098001A2

公开(公告)日：2004-11-11

申请号：PCT/US2004013124

申请日：2004-04-28

Applicant: RAYTHEON CO

Inventor： REEDER ROBIN A ,  MATTHEWS STEVEN C ,  BETIN ALEXANDER A

IPC: H01S3/06 ,  H01S3/23

CPC classification number: H01S3/2308 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/08095

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.

Abstract translation: 具有集成反射面的固态激光束放大器。 矩形板状增益介质（50）沿着板坯内的第一曲折反射路径接收输入激光束的第一部分。 增益介质（50）还接收已经从整体反射表面（56）反射的输入激光束的第二部分，使得两个部分沿着互补的锯齿形路径横越增益介质（50）。 锯齿形路径由波束部分的传播通过增益介质板（50）的全内反射定义。 类似的反射表面（58）可以相对于增益介质板（50）的出口端定位，其在平行方向上重定向所有的输出光束部分。 增益介质（50）可以是镱或钕掺杂的钇铝石榴石。 增益介质（50）可以形成为高纵横比矩形板，并且可以用蓝宝石覆盖。 反射表面可以通过全内反射而起作用或者可以采用反射材料，例如电介质涂层。 可以将一部分未掺杂的介质（52）施加到增益介质板的入口或出口端，以控制入射角和折射角。