公开(公告)号：US06621849B1

公开(公告)日：2003-09-16

申请号：US09926212

申请日：2001-09-25

Applicant: Pierre-Yves Thro ,  Gilles Ughetto

Inventor： Pierre-Yves Thro ,  Gilles Ughetto

IPC: H01S308

CPC classification number: H01S3/094084 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/061 ,  H01S3/0941

Abstract: An optical pumping module for a laser including an amplifying medium forming a bar with a circular base, at least one light source for optical pumping of the amplifying medium, and a reflector that surrounds the amplifying medium to send the light, along several passes, towards the amplifying medium and forming a cylinder with a polygonal base. The light source is placed in front of one edge of this cylinder on the opposite side of this edge from the amplifying medium. The optical pumping module may be particularly applicable to laser cutting and welding.

Abstract translation: 一种用于激光器的光泵模块，包括形成具有圆形基座的放大介质的放大介质，用于光泵浦放大介质的至少一个光源，以及围绕放大介质的反射器，沿着多个通道朝向 放大介质并形成具有多边形基底的圆柱体。 光源被放置在该圆柱体的一个边缘的前面，与放大介质的该边缘的相对侧。 光泵送模块可以特别适用于激光切割和焊接。

公开(公告)号：US20030161365A1

公开(公告)日：2003-08-28

申请号：US10302630

申请日：2002-11-21

Applicant: General Atomics

Inventor： Michael D. Perry ,  Paul S. Banks ,  Jason Zweiback ,  Robert W. Schleicher JR.

IPC: H01S003/04 ,  H01S003/14 ,  H01S003/091 ,  H01S003/094

CPC classification number: H01S3/025 ,  H01S3/0401 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/07 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/1603 ,  H01S3/1643 ,  H01S3/20 ,  H01S3/2341

Abstract: A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A cooling fluid flows about the solid-state elements and a semiconductor laser diode provides optical pump radiation into the volume of the laser chamber such that laser emission from the device passes through the gain medium and the fluid. The laser device provides the advantages of a solid-state gain medium laser (e.g., diode-pumping, high power density, etc), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.

Abstract translation: 可以用作振荡器或放大器的激光装置，其包括其中形成有体积的腔室和体积内的增益介质。 增益介质包括固体元素，其包含分布在体积内的活性激光离子。 冷却流体围绕固态元件流动，并且半导体激光二极管将光泵辐射提供到激光室的体积中，使得来自器件的激光发射通过增益介质和流体。 激光器件提供了固态增益介质激光器（例如，二极管泵浦，高功率密度等）的优点，但是能够以比从纯固体介质可实现的更高的平均功率和光束质量进行操作。

公开(公告)号：US06584134B2

公开(公告)日：2003-06-24

申请号：US10026510

申请日：2001-12-19

Applicant: Yusong Yin ,  Peili Chen ,  Dmitry Donskoy

Inventor： Yusong Yin ,  Peili Chen ,  Dmitry Donskoy

IPC: H01S308

CPC classification number: H01S3/08045 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/08054 ,  H01S3/0816 ,  H01S3/09415 ,  H01S3/1083 ,  H01S3/117

Abstract: According to the invention, a high power diode pumped solid state laser is provided. The laser includes a first and second reflective surfaces which form an optical resonator cavity. A laser medium, particularly a Nd doped laser medium for example: a Nd:YAG, a Nd:YLF, or a Nd:YVO4 crystal is provided within the laser cavity. A fundamental frequency laser beam propagates from the front and back ends of the laser medium. The first reflective surface is highly reflective for fundamental beam. The second reflective surface is at least partially reflective for fundamental beam. The laser medium is end pumped by at least one diode pumping apparatus for example, a laser diode, or diode array, or fiber coupled laser diodes, whose wavelength matches at least one laser medium absorption band. The diode pumping apparatus is located adjacent either the front end or the back end of the laser medium, or both. The optical resonator cavity is configured to provide a laser beam diameter in the laser medium from about 0.8 mm to 2 mm in diameter for the fundamental beam. Desirably, the laser medium has a diameter of about 1.6 to 5 times the fundamental beam diameter in the laser medium. A cooling jacket is desirably provided surrounding the laser medium so that the laser medium is directly liquid cooled. Desirably, the resonator cavity is also configured so that the fundamental beam is operated at TEM00 mode. Preferably, a polarization discriminator for example, a polarizer or one or more Brewster plate is located within the resonator cavity to discriminate one polarization over the other in favor of a particular polarization.

公开(公告)号：US20020175714A1

公开(公告)日：2002-11-28

申请号：US09862836

申请日：2001-05-23

Inventor： Timothy L. Irwin

IPC: H03D013/00

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/061 ,  H01S3/09408 ,  H01S3/094084

Abstract: A process of making a laser diode device includes these steps: applying a bonding layer such as molybdenum manganese to surfaces of first and second bodies of dielectric material such as beryllium oxide; joining the first and second bodies together to form a cavity; and bonding a sectored conductor ring to the bonding layer within the cavity. The laser diode device made by the process includes a body of dielectric material such as beryllium oxide forming a cavity; a bonding layer lining the cavity; a conductor bonded to the layer within the cavity; the conductor being divided into ring sectors separated by radial diode bar spaces; and a laser diode bar in each of the bar spaces forming an array of such laser diode bars. The ring sectors and laser diode bars together form a series path for electric current around the conductor to energize the laser diode bars.

Abstract translation: 制造激光二极管器件的过程包括以下步骤：将诸如钼锰的结合层施加到电介质材料的第一和第二体的表面，例如氧化铍; 将第一和第二体接合在一起形成空腔; 并且将分隔的导体环结合到腔内的结合层。 通过该方法制造的激光二极管器件包括形成空腔的诸如氧化铍的介电材料体; 衬在空腔上的粘合层; 导体，其结合到腔内的层; 导体被分成由径向二极管条空间分开的环形部分; 并且每个条形空间中的激光二极管条形成这种激光二极管条的阵列。 环形扇区和激光二极管条一起形成用于导体周围的电流的串联路径，以激励激光二极管条。

公开(公告)号：US20020110166A1

公开(公告)日：2002-08-15

申请号：US09783457

申请日：2001-02-14

Inventor： David M. Filgas

IPC: H01S003/04

CPC classification number: H01S3/042 ,  H01S3/0407 ,  H01S3/0604

Abstract: A method and system provide improved surface cooling of a laser gain medium such as a solid state disc through the presence of a layer of a highly conductive liquid separating the solid state disc from a heat sink of the system. The highly conductive liquid, such as, for example, mercury, is placed to serve as a conductor of heat between the disc and the heat sink. Liquid allows for good thermal contact between the heat sink and the disc reducing the problem of thermal contact resistance found when more solid means of contact are used.

Abstract translation: 一种方法和系统通过存在将固态盘与系统的散热器分开的高导电液体的存在来提供诸如固态盘的激光增益介质的表面冷却。 放置高导电液体，例如汞，以用作盘和散热片之间的热导体。 液体允许散热器和盘之间的良好的热接触减少了当使用更固体的接触方式时发现的热接触电阻的问题。

公开(公告)号：US20020080841A1

公开(公告)日：2002-06-27

申请号：US10026510

申请日：2001-12-19

Inventor： Yusong Yin ,  Peili Chen ,  Dmitry Donskoy

IPC: H01S003/091 ,  H01S003/094 ,  H01S003/08

CPC classification number: H01S3/08045 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/08054 ,  H01S3/0816 ,  H01S3/09415 ,  H01S3/1083 ,  H01S3/117

Abstract: According to the invention, a high power diode pumped solid state laser is provided. The laser includes a first and second reflective surfaces which form an optical resonator cavity. A laser medium, particularly a Nd doped laser medium for example: a Nd:YAG, a Nd:YLF, or a Nd:YVO4 crystal is provided within the laser cavity. A fundamental frequency laser beam propagates from the front and back ends of the laser medium. The first reflective surface is highly reflective for fundamental beam. The second reflective surface is at least partially reflective for fundamental beam. The laser medium is end pumped by at least one diode pumping apparatus for example, a laser diode, or diode array, or fiber coupled laser diodes, whose wavelength matches at least one laser medium absorption band. The diode pumping apparatus is located adjacent either the front end or the back end of the laser medium, or both. The optical resonator cavity is configured to provide a laser beam diameter in the laser medium from about 0.8 mm to 2 mm in diameter for the fundamental beam. Desirably, the laser medium has a diameter of about 1.6 to 5 times the fundamental beam diameter in the laser medium. A cooling jacket is desirably provided surrounding the laser medium so that the laser medium is directly liquid cooled. Desirably, the resonator cavity is also configured so that the fundamental beam is operated at TEM00 mode. Preferably, a polarization discriminator for example, a polarizer or one or more Brewster plate is located within the resonator cavity to discriminate one polarization over the other in favor of a particular polarization.

公开(公告)号：US20020018497A1

公开(公告)日：2002-02-14

申请号：US09911401

申请日：2001-07-25

Applicant: NIDEK CO., LTD.

Inventor： Yasuyuki Naito ,  Wataru Niwa

IPC: H01S003/04

CPC classification number: H01S3/04 ,  A61F9/008 ,  A61F9/00821 ,  A61F2009/00863 ,  H01S3/0404 ,  H01S3/0407

Abstract: A laser treatment apparatus for performing treatments on an affected part by irradiating the affected part with a laser beam for treatment is disclosed. This apparatus includes a laser oscillator, a cooling unit including a fan which cools the laser oscillator, a temperature sensor which directly or indirectly detects a temperature of the laser oscillator, and a control unit which drives the fan at roughly constant low speed when a detected temperature by the temperature sensor is below a predetermined reference value and at roughly constant high speed when the detected temperature is the predetermined reference value or more.

Abstract translation: 公开了一种激光治疗装置，用于通过用激光束照射受影响的部位来对受影响的部位进行治疗。 该装置包括激光振荡器，包括冷却激光振荡器的风扇的冷却单元，直接或间接地检测激光振荡器的温度的温度传感器和当检测到的激光振荡器以大致恒定的低速驱动风扇的控制单元 当检测到的温度是预定的参考值或更高时，温度传感器的温度低于预定的参考值并且大致恒定的高速度。

公开(公告)号：US06307871B1

公开(公告)日：2001-10-23

申请号：US09270991

申请日：1999-03-17

Applicant: Geoffrey O. Heberle

Inventor： Geoffrey O. Heberle

IPC: H01S304

CPC classification number: F28F3/02 ,  F28D20/02 ,  F28D2021/0029 ,  F28F3/12 ,  H01S3/025 ,  H01S3/027 ,  H01S3/0405 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0941 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/02469 ,  H01S5/4025 ,  Y02E60/145

Abstract: A passively cooled solid-state laser system for producing high-output power is set forth. The system includes an optics bench assembly containing a laser head assembly which generates a high-power laser beam. A laser medium heat sink assembly is positioned in thermal communication with the laser medium for conductively dissipating waste heat and controlling the temperature of the laser medium. A diode array heat sink assembly is positioned in thermal communication with the laser diode array assembly for conductively dissipating waste heat and controlling the temperature of the laser diode array assembly. The heat sink assemblies include heat exchangers with extending surfaces in intimate contact with phase change material. When the laser system is operating, the phase change material transitions from solid to liquid phase. This transition of the phase change material also provides a thermal buffer for laser components such that the phase change material absorbs the energy associated with fluctuations in ambient temperature before transferring it to the laser component. Also, the heat sink assembly can contain more than one type of phase change material, each having a different melting temperature.

Abstract translation: 阐述了一种用于产生高输出功率的被动冷却的固态激光系统。 该系统包括包含产生高功率激光束的激光头组件的光学台架组件。 激光介质散热器组件定位成与激光介质热连通，用于导电地耗散废热并控制激光介质的温度。 二极管阵列散热器组件定位成与激光二极管阵列组件热连通，用于导电地耗散余热并控制激光二极管阵列组件的温度。 散热器组件包括具有与相变材料紧密接触的延伸表面的热交换器。 当激光系统工作时，相变材料从固相转变为液相。 相变材料的这种转变还为激光组件提供热缓冲器，使得相变材料在将其转移到激光部件之前吸收与环境温度波动相关联的能量。 此外，散热器组件可以包含多于一种类型的相变材料，每种相变材料具有不同的熔化温度。

公开(公告)号：US5978407A

公开(公告)日：1999-11-02

申请号：US825584

申请日：1997-03-31

Applicant: Jim J. Chang ,  Isaac L. Bass ,  Luis E. Zapata

Inventor： Jim J. Chang ,  Isaac L. Bass ,  Luis E. Zapata

IPC: H01S3/02 ,  H01S3/0941 ,  H01S3/091

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/061 ,  H01S3/094057 ,  H01S3/094084

Abstract: A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.

Abstract translation: 使用非常规光学器件将激光二极管光注入到激光泵室中的新的紧凑型侧泵激光泵腔设计包括多个细长的光集中通道。 在一个实施例中，光浓度通道是具有非常小的出射孔的复合抛物面聚光器（CPC），使得光不会从泵送室逸出并且将被多余的反射通过激光棒。 这种新设计有效地捕获包围激光棒的泵室内的泵浦辐射。 它能够实现更均匀的激光泵浦和高效的泵浦辐射循环，从而显着提高激光性能。 这种新设计还有效地拓宽了二极管可接受的辐射波长，从而以更低的成本获得了更可靠的激光器性能。

公开(公告)号：US5848081A

公开(公告)日：1998-12-08

申请号：US904216

申请日：1997-07-31

Applicant: Edward D. Reed ,  James Hobart

Inventor： Edward D. Reed ,  James Hobart

IPC: H01S3/04 ,  H01S3/042

CPC classification number: H01S3/042 ,  H01S3/0407

Abstract: A gain medium assembly for a laser system that has or attaches to a cooling fluid source. The gain medium assembly includes a laser system gain medium, an insulating jacket disposed around the gain medium, a cooling jacket disposed around the insulating jacket, and an energy source for optically exciting and heating the gain medium. The cooling jacket defines a cooling channel between itself and the insulating jacket for guiding flowing cooling fluid from the cooling fluid source over the insulating jacket. During operation, the heat in the gain medium dissipates through the insulating jacket and to the cooling fluid in the cooling channel, while the gain medium is maintained at a temperature that is significantly higher than the temperature of the cooling fluid. A gap may be formed between the gain medium and the insulating jacket to allow some of the cooling water to fill the gap and form a thin layer of water, and to provide uniform heat conduction, between the gain medium and the insulating jacket.

Abstract translation: 用于具有或附着于冷却流体源的激光系统的增益介质组件。 增益介质组件包括激光系统增益介质，设置在增益介质周围的绝缘护套，设置在绝缘护套周围的冷却套，以及用于光学激发和加热增益介质的能量源。 冷却套在其自身和绝缘套之间限定一个冷却通道，用于将来自冷却流体源的流动冷却流体导引在绝缘套上。 在操作期间，增益介质中的热量通过绝缘护套和冷却通道中的冷却流体消散，同时增益介质保持在明显高于冷却流体温度的温度。 可以在增益介质和绝缘护套之间形成间隙，以允许一些冷却水填充间隙并形成薄层的水，并且在增益介质和绝缘护套之间提供均匀的热传导。