公开(公告)号：US09209598B1

公开(公告)日：2015-12-08

申请号：US13714193

申请日：2012-12-13

Applicant: Brendan A. Reagan ,  Jorge J. Rocca ,  Keith A. Wernsing ,  Alden H. Curtis ,  Federico J. Furch

Inventor： Brendan A. Reagan ,  Jorge J. Rocca ,  Keith A. Wernsing ,  Alden H. Curtis ,  Federico J. Furch

IPC: H01S3/04 ,  H01S5/024 ,  H01L23/34

CPC classification number: H01S5/024 ,  H01L23/34 ,  H01L2924/0002 ,  H01S3/027 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0621 ,  H01S3/0813 ,  H01S3/1618 ,  H01S3/1643 ,  H01S3/2316 ,  H01S3/2341 ,  H01S5/02407 ,  H01L2924/00

Abstract: A cryogenic cooling apparatus for high average power laser oscillator or amplifier, wherein the oscillator or amplifier material is in direct contact with a flowing cryogenic liquid cooled to below its boiling point is described. This method of cooling overcomes the limit in heat flux due to the onset of film boiling, thereby allowing for increased laser average power.

Abstract translation: 一种用于高平均功率激光振荡器或放大器的低温冷却装置，其中振荡器或放大器材料与冷却至低于其沸点的流动低温液体直接接触。 这种冷却方法克服了由于薄膜沸腾开始引起的热通量的限制，从而允许增加的激光平均功率。

公开(公告)号：US20150249315A1

公开(公告)日：2015-09-03

申请号：US14414444

申请日：2012-07-13

Applicant: Moritz Ueffing ,  Thomas Metzger ,  Ferenc Krausz

Inventor： Moritz Ueffing ,  Thomas Metzger ,  Ferenc Krausz

IPC: H01S3/08 ,  H01S3/02 ,  H01S3/105 ,  H01S3/13 ,  H01S3/00 ,  H01S3/07

CPC classification number: H01S3/08095 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/02 ,  H01S3/025 ,  H01S3/027 ,  H01S3/0604 ,  H01S3/07 ,  H01S3/08059 ,  H01S3/105 ,  H01S3/1305 ,  H01S3/2316 ,  H01S3/2325 ,  H01S3/2341 ,  H01S3/235

Abstract: A laser pulse amplifier device (100) includes an amplifying cavity (10) comprising an amplifying laser gain medium (11) and multiple cavity mirrors (12.1 to 12.7) spanning a cavity light path (13), wherein the amplifying cavity (10) is configured for an amplification of laser pulses (1) circulating along the cavity light path, and a multi-pass amplifier (20) being optically coupled with the amplifying cavity (10) and comprising multiple deflection mirrors (22) spanning a multipass light path (23), wherein the multi-pass amplifier (20) is configured for a post-amplification of laser pulses (2) coupled out of the amplifying cavity (10), wherein the amplifying cavity (10) and the multi-pass amplifier (20) are arranged such that the laser gain medium (11) of the amplifying cavity (10) is included as an active medium in the multi-pass light path (23) of the multi-pass amplifier (20). Furthermore, a method of amplifying laser pulses is described.

Abstract translation: 激光脉冲放大器装置（100）包括放大腔（10），其包括放大激光增益介质（11）和跨过空腔光路（13）的多个腔镜（12.1至12.7），其中放大腔（10）为 被配置为用于放大沿着空腔光路循环的激光脉冲（1），以及与所述放大腔（10）光耦合的多通道放大器（20），并且包括跨越多通道光路的多个偏转镜（22） 23），其中所述多通道放大器（20）被配置用于对从所述放大腔（10）耦合出的激光脉冲（2）进行后置放大，其中所述放大腔（10）和所述多通放大器 ）被布置为使得放大空腔（10）的激光增益介质（11）作为有源介质被包括在多通道放大器（20）的多通道光路（23）中。 此外，描述了放大激光脉冲的方法。

公开(公告)号：US20140328365A1

公开(公告)日：2014-11-06

申请号：US14358589

申请日：2012-11-15

Applicant: FEMTOLASERS PRODUKTIONS GMBH

Inventor： Alexander Grujic ,  Tuan Le ,  Andreas Stingl ,  Alfred Tomasch

IPC: H01S3/091 ,  H01S3/081

CPC classification number: H01S3/091 ,  H01S3/0057 ,  H01S3/027 ,  H01S3/08059 ,  H01S3/0811 ,  H01S3/0817 ,  H01S3/09415 ,  H01S3/1112 ,  H01S3/1625 ,  H01S3/1636

Abstract: A multifunctional laser device configured to be applicable as such in each of: multiple photon processes, nano structuring processes, optical coherence tomography, Terahertz (THZ) spectroscopy, THz imaging; or a combination of such processes; and comprising a mode-locked linear (X or Z-folded) fs laser resonator having a repetition rate of at least 300 MHz and 600 MHz at most and, thus, a corresponding short resonator length, said fs laser resonator further being a dispersive mirrors cavity having an average negative GDD (Group Delay Dispersion) in the spectral range of the laser operation, and being arranged to generate laser pulses with a pulse width of less than 30 fs, and comprising a pump laser operating at an optical output pump power of less than 2 W.

Abstract translation: 一种多功能激光装置，其配置为可以应用于：多光子过程，纳米结构化过程，光学相干断层扫描，太赫兹（THZ）光谱，太赫兹成像; 或这些过程的组合; 并且包括最多具有至少300MHz和600MHz的重复率的锁模线性（X或Z折叠）fs激光谐振器，因此，相应的短谐振器长度，所述fs激光谐振器还是分散镜 在激光操作的光谱范围内具有平均负GDD（群延迟色散）的空腔，并且被布置成产生脉冲宽度小于30fs的激光脉冲，并且包括以光输出泵浦功率 小于2W

公开(公告)号：US08135053B2

公开(公告)日：2012-03-13

申请号：US12867907

申请日：2009-02-18

Applicant: Andreas Assion ,  Andreas Stingl ,  Alfred Tomasch ,  Christian Warmuth

Inventor： Andreas Assion ,  Andreas Stingl ,  Alfred Tomasch ,  Christian Warmuth

IPC: H01S3/08

CPC classification number: H01S3/025 ,  H01S3/027 ,  H01S3/034

Abstract: The present disclosure relates to a laser crystal device (1) for short pulse lasers, comprising a container (4), the interior of which is sealed relative to the environment and which contains a technically pure atmosphere with windows (12, 13) in the side walls (12, 13) for the passage of laser radiation (16), which in operation passes through a laser crystal (6), wherein the window (12, 13) has an inclination of the Brewster angle to the beam path of the laser radiation (16) and a mounting (5) for the laser crystal (6) is provided within the container (4), the windows (12, 13) are inclined to each other by double the Brewster angle and are placed at an adequate distance from the laser crystal (6) position, with relation to the laser beam properties, wherein the beam cross section at the windows (12, 13) is sufficiently large in order to guarantee a peak intensity at the windows (12, 13) which is sufficiently reduced in relation to the peak intensity of the laser beam (16) at the laser crystal (6) for avoiding degenerative processes on the windows (12, 13).

Abstract translation: 本公开涉及一种用于短脉冲激光器的激光晶体装置（1），包括容器（4），其内部相对于环境被密封并且包含技术上纯净的气氛，其中窗口（12,13）在 用于通过激光辐射（16）的侧壁（12,13），其在操作中通过激光晶体（6），其中窗口（12,13）具有与布鲁斯特角度相对于光束路径的倾斜度 激光辐射（16）和用于激光晶体（6）的安装件（5）设置在容器（4）内，窗口（12,13）彼此倾斜两倍于布鲁斯特角度并且被放置在足够 与激光晶体（6）位置的距离相对于激光束性质，其中窗口（12,13）处的光束横截面足够大，以便保证在窗口（12,13）处的峰值强度， 相对于激光束的激光束（16）的峰值强度充分降低 晶体（6），用于避免窗口（12,13）上的退化过程。

公开(公告)号：US20070053387A1

公开(公告)日：2007-03-08

申请号：US10554161

申请日：2004-04-21

Applicant: Stefano Dell'Acqua ,  Giuliano Piccinno

Inventor： Stefano Dell'Acqua ,  Giuliano Piccinno

IPC: H01S3/10

CPC classification number: H01S3/109 ,  H01S3/027 ,  H01S3/0401 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0815 ,  H01S3/1611 ,  H01S3/1653

Abstract: A diode pumped laser apparatus for generating a visible power beam, of the type comprising: a miniaturised linear laser cavity (72) with very low losses, comprising at least the following optical elements (30,33,36,10,20): reflecting means (30;33;36), highly reflecting at a fundamental wavelength, at least one of said reflecting means (33) being traversed by a pumping beam (55), at least one of said reflecting means (36) reflecting at the fundamental wavelength and at the second harmonic wavelength and at least one of said reflecting means (33) being highly transmissive at the second harmonic (51) warelength of said fundamental wavelength; an active material (10) with polarized emission and with a gain configuration with small thermal aberration for the cavity mode, said active material (10) being able to generate laser light (50) at a fundamental wavelength; a non linear crystal (20), inside said cavity (72). According to the invention, said non linear crystal (20) is able to generate a second harmonic (51) of said fundamental wavelength by means of type I critical phase matching and said cavity (72) is associated to one or more thermostating means (45;41;42;43;44) to lock in temperature said cavity (72) and its optical elements (30,33,36,10,20), and accurately to set the temperature of the non linear crystal (10).

Abstract translation: 一种用于产生可见光束的二极管泵浦激光装置，包括：具有非常低损耗的小型化线性激光腔（72），至少包括以下光学元件（30,33,36,10,20）：反射 在基波长处高度反射的装置（30; 33; 36），所述反射装置（33）中的至少一个被泵浦光束（55）穿过，所述反射装置（36）中的至少一个以基波 波长和二次谐波波长，并且所述反射装置（33）中的至少一个在所述基波长的二次谐波（51）的长度处具有高透射性; 具有极化发射的活性材料（10）和具有用于空腔模式的小的热像差的增益配置，所述活性材料（10）能够产生基本波长的激光（50）; 在所述腔（72）内部的非线性晶体（20）。 根据本发明，所述非线性晶体（20）能够通过I型临界相位匹配产生所述基波长的二次谐波（51），并且所述空腔（72）与一个或多个恒温装置（45 ; 41; 42; 43; 44）以锁定所述空腔（72）及其光学元件（30,33,36,10,20）的温度，并且精确地设定非线性晶体（10）的温度。

公开(公告)号：US07088751B2

公开(公告)日：2006-08-08

申请号：US10432898

申请日：2001-03-08

Applicant: Kenichi Matsui ,  Akihiro Otani

Inventor： Kenichi Matsui ,  Akihiro Otani

IPC: H01S3/00 ,  H01L23/20

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/027 ,  H01S3/0407

Abstract: A solid-state laser apparatus includes a cavity 17 for storing a laser diode 40 and a laser medium 6 to be excited by the laser diode 40, and a storage unit 70, for communicating with the cavity 17 and for internally storing a drying agent 71. A moisture permeable film 72 is formed at openings 73 whereat the cavity 17 and the storage unit 70 communicate with each other.

Abstract translation: 固体激光装置包括用于存储激光二极管40的空腔17和要被激光二极管40激发的激光介质6，以及用于与空腔17连通并用于内部存储干燥剂71的存储单元70 。 在开口73处形成透湿膜72，空腔17和存储单元70彼此连通。

公开(公告)号：US06816536B2

公开(公告)日：2004-11-09

申请号：US10006997

申请日：2001-11-30

Applicant: Karin Julliard ,  Steve Utter ,  Alan B. Petersen

Inventor： Karin Julliard ,  Steve Utter ,  Alan B. Petersen

IPC: H01S300

CPC classification number: G02B27/0006 ,  B65D81/266 ,  B65D85/38 ,  H01S3/025 ,  H01S3/027

Abstract: A method and apparatus are provided for in situ protection of sensitive optical materials from alternation or damage due to exposure to trace atmospheric components, during shipping, storage or operation. The sensitive optical material is disposed within an enclosure adaptable to be substantially sealed against the external atmosphere. A container, enclosing a sink material absorbing trace atmospheric components, is coupled to the enclosure by a gas permeable surface, which allows fast diffusion of the trace atmospheric component inside the enclosure to the sink material.

公开(公告)号：US20040052285A1

公开(公告)日：2004-03-18

申请号：US10432898

申请日：2003-10-07

Inventor： Kenichi Matsui ,  Akihiro Otani

IPC: H01S003/091 ,  H01S003/094

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/027 ,  H01S3/0407

Abstract: A solid-state laser apparatus includes a cavity 17 for storing a laser diode 40 and a laser medium 6 to be excited by the laser diode 40, and a storage unit 70, for communicating with the cavity 17 and for internally storing a drying agent 71. A moisture permeable film 72 is formed at openings 73 whereat the cavity 17 and the storage unit 70 communicate with each other.

Abstract translation: 固体激光装置包括用于存储激光二极管40的空腔17和要被激光二极管40激发的激光介质6，以及用于与空腔17连通并用于内部存储干燥剂71的存储单元70 在开口73处形成透湿膜72，空腔17和存储单元70彼此连通。

公开(公告)号：US20030103545A1

公开(公告)日：2003-06-05

申请号：US10006997

申请日：2001-11-30

Inventor： Karin Julliard ,  Steve Utter ,  Alan Petersen

IPC: H01S003/00

CPC classification number: G02B27/0006 ,  B65D81/266 ,  B65D85/38 ,  H01S3/025 ,  H01S3/027

Abstract: A method and apparatus are provided for in situ protection of sensitive optical materials from alteration or damage due to exposure to trace atmospheric components, during shipping, storage or operation. The sensitive optical material is disposed within an enclosure adaptable to be substantially sealed against the external atmosphere. A container, enclosing a sink material absorbing trace atmospheric components, is coupled to the enclosure by a gas permeable surface, which allows fast diffusion of the trace atmospheric components present inside the enclosure to the sink material.

Abstract translation: 提供了一种方法和装置，用于在运输，储存或操作期间对敏感光学材料进行原位保护，防止由于暴露于痕量大气成分而引起的变化或损坏。 敏感光学材料设置在适于基本上相对于外部气氛密封的外壳内。 封闭吸收痕量大气成分的水槽材料的容器通过气体可透过表面耦合到外壳，这允许存在于外壳内的迹线大气成分的快速扩散到槽材料。

公开(公告)号：US06351478B1

公开(公告)日：2002-02-26

申请号：US09151851

申请日：1998-09-11

Applicant: Geoffrey O. Heberle

Inventor： Geoffrey O. Heberle

IPC: H01S304

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

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。