公开(公告)号：US20170310069A1

公开(公告)日：2017-10-26

申请号：US15497906

申请日：2017-04-26

Applicant: TRUMPF LASER GMBH

Inventor： Sven-Silvius Schad ,  Alois Herkommer ,  Matthias Ackermann

IPC: H01S3/08 ,  H01S3/081 ,  H01S3/06 ,  H01S3/042 ,  H01S3/091 ,  H01S3/04

CPC classification number: H01S3/08059 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/08068 ,  H01S3/081 ,  H01S3/091 ,  H01S3/094084 ,  H01S3/09415 ,  H01S5/005 ,  H01S5/0071

Abstract: This disclosure relates to pumping light systems and methods for using a disc laser. A focusing device with a reflecting surface focuses a pumping light beam onto a laser-active medium. A deflecting system deflects the pumping light beam between reflecting regions formed on the reflecting surface that are arranged in different angle regions around a central axis of the reflecting surface in at least a first annular region and a second annular region. The deflecting systems are configured to perform at least one deflection of the pumping light beam between two reflecting regions of the first annular region and at least one deflection between two reflecting regions of the second annular region.

公开(公告)号：US09325145B2

公开(公告)日：2016-04-26

申请号：US14708551

申请日：2015-05-11

Applicant: JEFFERSON SCIENCE ASSOCIATES, LLC

Inventor： George Neil ,  Michelle D. Shinn ,  Joseph Gubeli

IPC: H01S3/00 ,  H01S3/09 ,  H01S3/08 ,  H01S5/028 ,  H01S5/183

CPC classification number: H01S3/0903 ,  H01S3/0805 ,  H01S3/08068 ,  H01S5/0286 ,  H01S5/18375

Abstract: A method for improving the output beam quality of a free electron laser (FEL) by reducing the amount of emission at wavelengths longer than the electron pulse length and reducing the amount of edge radiation. A mirror constructed of thermally conductive material and having an aperture therein is placed at an oblique angle with respect to the beam downstream of the bending magnet but before any sensitive use of the FEL beam. The aperture in the mirror is sized to deflect emission longer than the wavelength of the FEL output while having a minor impact on the FEL output beam. A properly sized aperture will enable the FEL radiation, which is coherent and generally at a much shorter wavelength than the bending radiations, to pass through the aperture mirror. The much higher divergence bending radiations will subsequently strike the aperture mirror and be reflected safely out of the way.

Abstract translation: 一种通过减少长于电子脉冲长度的波长的发射量并减少边缘辐射量来改善自由电子激光器（FEL）的输出光束质量的方法。 由导热材料构成并在其中具有孔径的反射镜相对于弯曲磁体下游的光束倾斜地设置，但是在对FEL光束进行任何敏感的使用之前。 反射镜中的孔径的大小可使发射长于FEL输出的波长，同时对FEL输出光束有轻微的影响。 适当尺寸的孔将能够使相干且通常比弯曲辐射短得多的波长的FEL辐射通过孔径反射镜。 较高的发散弯曲辐射将随后撞击光圈镜并被安全地反射出来。

公开(公告)号：US09160133B2

公开(公告)日：2015-10-13

申请号：US14137219

申请日：2013-12-20

Applicant: Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： Jun Zhu ,  Jing-Lei Zhu ,  Qun-Qing Li ,  Kai-Li Jiang ,  Chen Feng ,  Guo-Fan Jin ,  Shou-Shan Fan

IPC: H01S3/08 ,  H01S3/223

CPC classification number: H01S3/08068 ,  H01S3/2232

Abstract: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a body, a metal film, and at least one microstructure. The at least one microstructure is concaved from a first reflective surface of the total reflective mirror. The at least one microstructure has a depth and a lateral size, and both the depth and the lateral size are in a range from about 0.5λ to about 2λ, while λ is a working wavelength of the laser.

Abstract translation: 激光器包括全反射镜，输出镜，放电灯和有源激光介质。 总反射镜，输出反射镜和放电灯限定谐振腔。 激活的激光介质填充在谐振腔中。 全反射镜包括主体，金属膜和至少一个微结构。 至少一个微结构从全反射镜的第一反射表面凹陷。 至少一个微结构具有深度和横向尺寸，并且深度和横向尺寸都在约0.5λ至约2λ的范围内，而λ是激光的工作波长。

公开(公告)号：US20150288126A1

公开(公告)日：2015-10-08

申请号：US14264307

申请日：2014-04-29

Applicant: Electronics and Telecommunications Research Institute ,  GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Hoon SONG ,  Do Kyeong KO ,  Dong Ho SHIN ,  Hwang Woon LEE ,  Moon Youn JUNG ,  Won Bae CHO

IPC: H01S3/00 ,  H01S3/102 ,  H01S3/11

CPC classification number: H01S3/005 ,  G02B5/09 ,  G02B17/004 ,  H01S3/07 ,  H01S3/08068 ,  H01S3/0811 ,  H01S3/0813 ,  H01S3/0823 ,  H01S3/094038 ,  H01S3/1024 ,  H01S3/11 ,  H01S3/1112 ,  H01S3/1625 ,  H01S3/1636 ,  H01S2301/02

Abstract: Disclosed is a high power ultra-short pulsed laser device increasing pulse energy by using resonators. A pulsed laser device may comprise a first resonator making a pump beam resonate primarily and passing the pump beam which resonated through a first output mirror; and a second resonator comprising a first multiple reflection mirror and a second multiple reflection mirror. Also, the first multiple reflection mirror includes at least one first small area mirror, and the second multiple reflection mirror includes at least one second small area mirror, and the second resonator makes the laser beam delivered from the first resonator resonate by reflecting the laser beam repetitively. Therefore, the pulsed laser device may increase pulse energy without using a multi-stage amplifier so that a high power ultra-short pulsed laser beam can be generated.

Abstract translation: 公开了一种通过使用谐振器增加脉冲能量的大功率超短脉冲激光器件。 脉冲激光装置可以包括使泵浦光束主要谐振并使通过第一输出镜谐振的泵浦光束通过的第一谐振器; 以及包括第一多反射镜和第二多反射镜的第二谐振器。 此外，第一多反射镜包括至少一个第一小面积反射镜，并且第二多反射镜包括至少一个第二小面积反射镜，并且第二谐振器使得从第一谐振器传递的激光束通过反射激光束而谐振 重复。 因此，脉冲激光装置可以在不使用多级放大器的情况下增加脉冲能量，从而可以产生高功率超短脉冲激光束。

公开(公告)号：US20140177667A1

公开(公告)日：2014-06-26

申请号：US14137248

申请日：2013-12-20

Applicant: HON HAI PRECISION INDUSTRY CO., LTD. ,  Tsinghua University

Inventor： JUN ZHU ,  JING-LEI ZHU ,  QUN-QING LI ,  KAI-LI JIANG ,  CHEN FENG ,  GUO-FAN JIN ,  SHOU-SHAN FAN

IPC: H01S3/08

CPC classification number: H01S3/08068 ,  H01S3/03 ,  H01S3/0619 ,  H01S3/092 ,  H01S3/1055 ,  H01S3/2232

Abstract: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a body, a metal film, and at least one microstructure. The at least one microstructure has a height and a lateral size, and both the height and the lateral size are in a range from about 0.5λ to about 2λ, while λ is a working wavelength of the laser.

Abstract translation: 激光器包括全反射镜，输出镜，放电灯和有源激光介质。 总反射镜，输出反射镜和放电灯限定谐振腔。 激活的激光介质填充在谐振腔中。 全反射镜包括主体，金属膜和至少一个微结构。 至少一个微结构具有高度和横向尺寸，并且高度和横向尺寸都在约0.5λ至约2λ的范围内，而λ是激光的工作波长。

公开(公告)号：US20140177666A1

公开(公告)日：2014-06-26

申请号：US14137236

申请日：2013-12-20

Applicant: HON HAI PRECISION INDUSTRY CO., LTD. ,  Tsinghua University

Inventor： JUN ZHU ,  JING-LEI ZHU ,  QUN-QING LI ,  KAI-LI JIANG ,  CHEN FENG ,  GUO-FAN JIN ,  SHOU-SHAN FAN

IPC: H01S3/08

CPC classification number: H01S3/08068 ,  H01S3/2232

Abstract: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a microstructure. The microstructure is convex ring-shaped structure. The convex ring-shaped structure has a height and a width, and both the height and the width are in a range from about 0.5λ to about 2λ, while λ is a working wavelength of the laser.

Abstract translation: 激光器包括全反射镜，输出镜，放电灯和有源激光介质。 总反射镜，输出反射镜和放电灯限定谐振腔。 激活的激光介质填充在谐振腔中。 总反射镜包括微结构。 微结构是凸环形结构。 凸形环形结构具有高度和宽度，高度和宽度都在约0.5λ至约2λ的范围内，而λ是激光的工作波长。

公开(公告)号：US20120250706A1

公开(公告)日：2012-10-04

申请号：US13515694

申请日：2010-12-10

Applicant: Johan Stiens ,  Werner Vandermeiren

Inventor： Johan Stiens ,  Werner Vandermeiren

IPC: H01S3/09

CPC classification number: H01S3/106 ,  H01S3/0804 ,  H01S3/0805 ,  H01S3/08059 ,  H01S3/08068 ,  H01S3/0815 ,  H01S3/105 ,  H01S3/11

Abstract: A laser (100) for outputting laser radiation includes a lasing material (110) in a resonant cavity (20) adapted for supporting a given lasing mode of oscillation. The laser (100) furthermore has at least one laser mirror (124) including a transparent portion for transmitting only a part of a beam of the laser (100) substantially smaller than the dimension of the beam of the laser (100) and the laser (100) includes a mode switching device (120) adapted to induce a change in the transmitted part of the beam, for altering the given lasing mode. A corresponding laser mirror (124), controller and a method for controlling a laser (100) also are described.

Abstract translation: 用于输出激光辐射的激光器（100）包括在适于支持给定的激光振荡模式的谐振腔（20）中的激光材料（110）。 激光器（100）还具有至少一个激光反射镜（124），该激光反射镜（124）包括透明部分，用于仅透射部分激光束（100）的一部分，其基本上小于激光束（100）的光束尺寸和激光 （100）包括模式切换装置（120），其适于引起所述光束的透射部分的变化，以改变给定的激光模式。 还描述了相应的激光镜（124），控制器和用于控制激光（100）的方法。

公开(公告)号：US07006551B2

公开(公告)日：2006-02-28

申请号：US10651747

申请日：2003-08-29

Applicant: Russell W. Gruhlke ,  Charles D. H ke

Inventor： Russell W. Gruhlke ,  Charles D. H ke

IPC: H01S3/10

CPC classification number: H01S5/141 ,  H01S3/08068 ,  H01S5/005 ,  H01S5/0654

Abstract: A method of enhancing wavelength tuning performance in an external cavity laser includes providing a diffractive focusing element, emitting light into the cavity of the laser at a range of angles relative to an optical axis of the cavity, and diffractively focusing the light back onto the optical axis at a wavelength-dependent focal distance using the diffractive focusing element. The method further includes confining the diffractive focusing to a high dispersivity portion of the diffractive focusing element. In various embodiments, the confining may include offsetting the diffractive focusing element radially relative to the optical axis, or selectively blocking a portion of the light emitted into the cavity at emission angles less than a threshold emission angle.

Abstract translation: 一种增强外腔激光器中的波长调谐性能的方法包括：提供衍射聚焦元件，以相对于空腔的光轴的角度范围将光发射到激光器的腔中，并将光衍射地聚焦到光学 使用衍射聚焦元件以波长相关的焦距。 该方法还包括将衍射聚焦限制在衍射聚焦元件的高分散性部分。 在各种实施例中，约束可以包括使衍射聚焦元件相对于光轴径向偏移，或者以小于阈值发射角的发射角度选择性地阻挡发射到腔中的光的一部分。

公开(公告)号：US20050271095A1

公开(公告)日：2005-12-08

申请号：US11178863

申请日：2005-07-11

Applicant: Donald Smart

Inventor： Donald Smart

IPC: B23K26/00 ,  B23K26/06 ,  H01C17/242 ,  H01G5/019 ,  H01S3/00 ,  H01S3/10 ,  H01S3/11 ,  H01S3/117

CPC classification number: H01C17/242 ,  B23K26/0622 ,  B23K26/064 ,  B23K26/0648 ,  H01G5/019 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/08068 ,  H01S3/10038 ,  H01S3/10046 ,  H01S3/1068 ,  H01S3/117

Abstract: A pulsed laser system includes a laser pump, a laser rod, a reflector interposed between the laser pump and the laser rod, through which energy from the laser pump enters the laser rod, an output reflector through which energy is emitted from the laser rod, a switch interposed between the laser rod and the output reflector, and a control device. The switch, when closed, causes energy to be stored in the laser rod and, when opened, allows energy to be emitted from the laser rod during an emission period. The control device allows a primary laser pulse emitted from the laser rod during the emission period to impinge on a workpiece and blocks from the workpiece secondary laser emission occurring during the emission period after emission of the primary pulse. The pulsed laser system is operated over a range of repetition rates, so as to cause laser energy to be emitted during a plurality of emission periods at each repetition rate. At least a portion of the laser energy emitted during the emission periods is directed toward the target structure in order to perform passive or functional trimming of the target structure. The switch is closed for a fixed, predetermined period of time prior to each emission period regardless of repetition rate of the primary laser pulse within the range of repetition-rates in order to store energy in the laser rod. The pump is operated continuously at constant power.

Abstract translation: 脉冲激光系统包括激光泵，激光棒，介于激光泵和激光棒之间的反射器，来自激光泵的能量通过该反射器进入激光棒，通过激光棒从激光棒发射能量的输出反射器， 介于激光棒和输出反射器之间的开关，以及控制装置。 关闭时，开关将能量存储在激光棒中，并且在打开时允许在发射期间从激光棒发射能量。 控制装置允许在发射周期期间从激光棒发射的初级激光脉冲撞击工件，并阻止在发射主脉冲之后的发射周期期间发生的工件辅助激光发射。 脉冲激光系统在重复频率的范围内运行，以便在每个重复频率的多个发射周期期间使激光能量发射。 在发射周期期间发射的激光能量的至少一部分指向目标结构，以便执行目标结构的被动或功能修整。 在每个发射周期之前，开关闭合固定的预定时间段，而不管主激光脉冲在重复频率范围内的重复率如何，以便在激光棒中存储能量。 泵以恒定功率连续运行。

公开(公告)号：US20050141583A1

公开(公告)日：2005-06-30

申请号：US11061931

申请日：2005-02-22

Applicant: Torbjorn Sandstrom

Inventor： Torbjorn Sandstrom

IPC: H01S3/08 ,  H01S3/0971 ,  H01S3/225

CPC classification number: H01S3/08068 ,  G03F7/70583 ,  H01S3/08 ,  H01S3/08022 ,  H01S3/0971 ,  H01S3/225

Abstract: A laser device may include at least two mirrors forming a resonant cavity for reflecting laser radiation. The laser device may further include a diffuser, which may equalize a coherence length and/divergence during a period of time.

Abstract translation: 激光装置可以包括形成用于反射激光辐射的谐振腔的至少两个反射镜。 激光装置还可以包括扩散器，其可以在一段时间内均衡相干长度和/发散。