公开(公告)号：EP1231684A1

公开(公告)日：2002-08-14

申请号：EP01121408.7

申请日：2001-09-07

申请人： Agilent Technologies, Inc. (a Delaware corporation)

发明人： Müller, Emmerich ,  Häussler, Ralf ,  Steffens, Wolf ,  Kallmann, Ulrich

IPC分类号： H01S5/14

CPC分类号： H01S5/141 ,  H01S3/106 ,  H01S3/1066 ,  H01S3/1068 ,  H01S3/107 ,  H01S5/143

摘要： The invention relates to a method of tuning a laser, comprising the steps of: providing a laser beam to an external cavity, the laser beam traveling through material along a path between a cavity end element and a tuning element, the path having an optical path length, selecting at least one mode of the laser by introducing a dispersion element in the path of the laser, rotating the tuning element about a pivot axis theoretically defined by the intersection of the surface planes of the cavity end element, the dispersion element and the tuning element to tune the laser, changing the optical path length of the path in order to at least partly compensate a shift between the real position of the pivot axis and the theoretically defined position.

摘要翻译： 本发明涉及一种调谐激光的方法，包括以下步骤：向外腔提供激光束，激光束沿着腔体端元件和调谐元件之间的路径传播通过材料，该路径具有光路 通过在激光的路径中引入色散元素来选择激光的至少一种模式，使调谐元件围绕理论上由腔体元件，色散元件和色散元件的表面相交界定的枢转轴线旋转 调谐元件以调节激光器，改变路径的光路长度，以便至少部分地补偿枢转轴线的实际位置与理论上定义的位置之间的偏移。

公开(公告)号：EP1226637A1

公开(公告)日：2002-07-31

申请号：EP00960947.0

申请日：2000-09-13

申请人： YEDA RESEARCH AND DEVELOPMENT CO. LTD.

发明人： FRIESEM, Asher, A.Weizmann Institute of Science ,  BLIT, Shmuel ,  ORON, Ram ,  HASMAN, Erez ,  DAVIDSON, Nir

IPC分类号： H01S3/10

CPC分类号： H01S3/08036 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/106 ,  H01S2301/20 ,  H01S2301/203

摘要： An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30 and 31), having polarizations orthogonal to each other. Mode control elements (28 and 29), such as apertures and phase elements, are introduced into the resonato to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.

公开(公告)号：EP1168533A1

公开(公告)日：2002-01-02

申请号：EP01810537.9

申请日：2001-06-01

申请人： Universitaet Bern

发明人： Weber, Heinz ,  Graf, Thomas

IPC分类号： H01S3/08 ,  H01S3/00 ,  G02F1/35

CPC分类号： H01S3/08 ,  H01S3/061 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/106

摘要： Das Verfahren zur Kompensation thermisch optischer Effekte im Strahlengang einer optische Komponenten enthaltenden Anordnung verwendet zur optischen Kompensation im Strahlengang wenigstens zwei unterschiedliche Materialeigenschaften aufweisende optische Elemente (30a-30d, 41a-41c) im Zusammenspiel. Zur Kompensation wird eine Erwärmung mittels Strahlungsabsorption, eine radiale Wärmeleitung zur Erzeugung einer leistungsabhängigen Temperaturverteilung und/oder eine thermische Dispersion zur Erzeugung einer thermischen Linse auf die unterschiedlichen Elemente verteilt.

摘要翻译： 该方法包括在光束路径中使用具有不同材料特性的至少两个光学元件（30a-30d）。 使用辐射吸收，热传导实现补偿，以产生依赖于功率的温度分布和热分散，以产生分布在各种元件之间的热透镜。 还包括以下独立权利要求：光学单元和具有光学单元的光学装置。

公开(公告)号：EP0892475A3

公开(公告)日：2000-03-22

申请号：EP98440156.2

申请日：1998-07-16

申请人： ALCATEL

发明人： Pfeiffer, Thomas, Dr.

IPC分类号： H01S3/106

CPC分类号： H01S3/106 ,  G02F2203/56 ,  H01S3/1062

摘要： Es wird ein Laser zur Erzeugung eines Wellenkamms vorgeschlagen, der ein in einem Resonator eingeschlossenes laseraktives Medium enthält, sowie Mittel zur Einkopplung von Pumplicht einer Pumpquelle, sowie Mittel zur Auskopplung des erzeugten Laserwellenkamms und mindestens ein optisches Filter innerhalb des Resonators zur Wellenkammerzeugung, wobei im Resonator ein Filter zur Erzeugung eines wellenlängenabhängigen Velustes innerhalb des Verstärkungsprofils des aktiven Mediums eingefügt ist. Dadurch wird Ringverstärkung über einen größeren Bereich gleich 1, und es schwingen im Resonator viele Moden des Wellenlängenkamms an.

公开(公告)号：EP0544825B1

公开(公告)日：1995-08-16

申请号：EP91918002.6

申请日：1991-08-21

申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： MOORADIAN, Aram

IPC分类号： H01S3/25 ,  H01S3/07 ,  H01S3/109 ,  H01S3/094

CPC分类号： H01S3/0627 ,  G02B6/42 ,  G02B6/425 ,  G02F1/39 ,  H01S3/0604 ,  H01S3/0632 ,  H01S3/08031 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/106 ,  H01S3/108 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/164 ,  H01S3/1643 ,  H01S3/2383 ,  H01S5/4062 ,  H01S5/423

摘要： A method and apparatus for generating a high power beam of light is described in which individual laser pixel elements are laterally defined and isolated in a wafer of solid state gain medium material and mirrors are formed on each side of the wafer to produce an optical cavity resonator. An array of diode lasers is used to pump adjacent pixels to stimulate light emission by each pixel.

公开(公告)号：EP0492340B1

公开(公告)日：1995-02-08

申请号：EP91121522.6

申请日：1991-12-16

申请人： TRUMPF LASERTECHNIK GmbH

发明人： Prokop, Heinz Jürgen Dr. Ing. ,  Häcker, Michael, Dipl. Ing. ,  Häfele, Karl-Eberhard Dipl. Ing.

IPC分类号： H01S3/106 ,  H01S3/098 ,  H01S3/07 ,  H01S3/08 ,  H01S3/136

CPC分类号： H01S3/0805 ,  H01S3/076 ,  H01S3/106

公开(公告)号：EP0572383A1

公开(公告)日：1993-12-08

申请号：EP90914343.0

申请日：1990-09-07

申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： ZAYHOWSKI, John, J. ,  MOORADIAN, Aram

IPC分类号： H01S3

CPC分类号： H01S3/0627 ,  H01S3/0602 ,  H01S3/0604 ,  H01S3/08031 ,  H01S3/082 ,  H01S3/102 ,  H01S3/105 ,  H01S3/106 ,  H01S3/1067 ,  H01S3/108 ,  H01S3/1124 ,  H01S3/115 ,  H01S3/117

摘要： Laser à commutation-Q ayant un milieu de gain (10) disposé à l'intérieur d'une première cavité (8) et une seconde cavité (90) dont la longueur du chemin optique est réglable (72) de sorte que la qualité de la première cavité résonante est affectée. Un aspect de l'invention est la possibilité de changer la longueur physique du chemin de la seconde cavité de manière à affecter la réflectivité d'un miroir (22) commun aux deux cavités vues de la première cavité. Un autre aspect de l'invention concerne l'incorporation, à l'intérieur de la seconde cavité, d'un matériau, dont l'indice de réfraction ou le coefficient d'absorption peut être modifié par application d'un champ électrique, d'un champ magnétique, d'un changement de température ou l'application d'une pression.

公开(公告)号：EP0569174A1

公开(公告)日：1993-11-10

申请号：EP93303227.8

申请日：1993-04-26

申请人： AT&T Corp.

发明人： Digiovanni, David John ,  Mizrahi, Victor ,  Zyskind, John Lehrer

IPC分类号： H01S3/06 ,  H01S3/106 ,  G02B6/16

CPC分类号： H01S3/0675 ,  G02B6/02057 ,  H01S3/0672 ,  H01S3/08031 ,  H01S3/106 ,  H01S3/1608 ,  H01S3/1693

摘要： An article, such as an optical communication system, which includes a laser formed in an optical waveguide or optical fiber having a rare-earth-doped core or core portion. In one embodiment, the optical resonant cavity of the laser is at least partially defined by a distributed Bragg reflector (10, 20) formed in a portion of the core. In contrast to the prior art, the length of the optical resonant cavity is about 5 cm or less.

摘要翻译： 一种诸如光通信系统的物品，其包括形成在具有稀土掺杂核心部分的光波导或光纤中的激光。 在一个实施例中，激光器的光学谐振腔至少部分地由形成在芯的一部分中的分布式布拉格反射器（10,20）限定。 与现有技术相反，光学谐振腔的长度约为5cm或更小。

公开(公告)号：EP0519078A4

公开(公告)日：1993-06-30

申请号：EP92901436

申请日：1991-12-18

申请人： SONY CORPORATION

发明人： KANEDA, YUSHI

IPC分类号： H01S3/00 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/106 ,  H01S5/00 ,  H01S5/40 ,  H01S3/094

CPC分类号： H01S3/09415 ,  H01S3/005 ,  H01S3/08072 ,  H01S3/094053 ,  H01S3/106 ,  H01S5/005 ,  H01S5/4012 ,  H01S5/4025

摘要： A laser beam generator which includes an excitation light source (1) for generating a plurality of excitation optical beams, a laser medium (7) for generating at least two laser beams in response to irradiation with a plurality of excitation optical beams in different positions, reflection means (8) for reflecting part of the laser beams generated by the laser medium (7), constituting a laser resonator (5) in cooperation with heat lenses (7a) - (7d) formed inside the laser medium (7), and phase compensation means (9) for compensating for the phases of the laser beams outputted from the laser resonator (5). This generator can generate a laser beam having a small angle of divergence and a high energy density. The laser beam can be subjected to tracking control by changing the phase compensation quantity.

公开(公告)号：EP0458576A3

公开(公告)日：1993-02-24

申请号：EP91304552.2

申请日：1991-05-21

申请人： SONY CORPORATION

发明人： Kubota, Shigeo

IPC分类号： H01S3/08 ,  H01S3/05 ,  H01S3/02

CPC分类号： H01S3/025 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/106

摘要： A laser apparatus includes first (LR1) and second (LR2) laser rods disposed to respective sides of a centre point (0) on an optical axis (Ax), respectively, first (L1) and second (L2) concave lenses, for compensating the first and second thermal lenses, disposed at positions which are to respective sides of the centre point on the optical axis and inner sides of the first and second laser rods, respectively, first (M1) and second (M2) reflection mirrors disposed at positions which are to respective sides of the centre point on the optical axis and outer sides of the first and second laser rods, respectively, a first supporting unit (BL1) for supporting the first laser rod and the second concave lens such that the distance therebetween on the optical axis is kept to be a constant value, and a second supporting unit (BL2) for supporting the second laser rod and the first concave lens such that the distance therebetween on the optical axis is kept to be a constant value, wherein the first and second supporting units are relatively movable on the optical axis.