公开(公告)号：US09366806B2

公开(公告)日：2016-06-14

申请号：US14010825

申请日：2013-08-27

Applicant: OFS Fitel, LLC

Inventor： Thierry F. Taunay

IPC: G02B6/036 ,  G02B6/02 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16

CPC classification number: G02B6/02004 ,  C03B2201/36 ,  C03B2203/23 ,  G02B6/02338 ,  G02B6/03644 ,  H01S3/06733 ,  H01S3/094007 ,  H01S3/1608 ,  H01S3/1616 ,  H01S3/1618

Abstract: The cladding absorption of a single-mode, gain-producing fibers is increased in fiber designs that includes a trench region disposed between the core and inner cladding regions. Increased cladding absorption is achieved while maintaining single-mode operation.

Abstract translation: 在包括设置在芯和内包层区域之间的沟槽区域的光纤设计中，单模增益产生光纤的包层吸收增加。 在保持单模操作的同时实现增加的包层吸收。

公开(公告)号：US09331451B2

公开(公告)日：2016-05-03

申请号：US14501401

申请日：2014-09-30

Applicant: TRUMPF LASER GMBH

Inventor： Dirk Sutter ,  Alexander Killi ,  Jochen Kleinbauer ,  Yufeng Li

IPC: H01S3/091 ,  H01S3/0941 ,  H01S5/065 ,  H01S5/14 ,  H01S3/094 ,  H01S3/1055 ,  H01S3/106 ,  H01S3/16 ,  H01S3/06

CPC classification number: H01S3/091 ,  H01S3/0604 ,  H01S3/094015 ,  H01S3/094084 ,  H01S3/09415 ,  H01S3/1055 ,  H01S3/1062 ,  H01S3/1618 ,  H01S3/1643 ,  H01S5/0654 ,  H01S5/0656 ,  H01S5/142 ,  H01S5/146

Abstract: The disclosure relates to a pump radiation arrangement comprising: a pump radiation source for producing pump radiation, a means for stabilizing the wavelength of the pump radiation source and a laser-active medium through which the pump radiation passes in a bidirectional manner. The pump radiation arrangement also has a retro-reflector for reflecting pump radiation which is not absorbed by the laser-active medium back to the pump radiation source and a wavelength-selective element for preventing a wavelength destabilization of the pump radiation source by filtering out undesirable spectral portions of pump radiation which is not absorbed by the laser-active medium. The invention also relates to an associated method for pumping a laser-active medium.

公开(公告)号：US09285541B2

公开(公告)日：2016-03-15

申请号：US13418255

申请日：2012-03-12

Applicant: Matthieu Saracco ,  Jason N. Farmer ,  Scott H. Keeney ,  Timothy S. McComb

Inventor： Matthieu Saracco ,  Jason N. Farmer ,  Scott H. Keeney ,  Timothy S. McComb

IPC: G02B6/14 ,  H01S3/00 ,  H01S3/067 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/16

CPC classification number: G02B6/14 ,  H01S3/0092 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08045 ,  H01S3/09415 ,  H01S3/1618 ,  H01S2301/03

Abstract: Nonlinear optical systems include fiber amplifiers using tapered waveguides such as optical fibers that permit multimode propagation but produce amplification and oscillation in a fundamental mode. The tapered waveguides generally are provided with an active dopant that is pumped with an optical pump source such as one or more semiconductor lasers. The active waveguide taper is selected to taper from a single or few mode section to a multimode section, and a seed beam in a fundamental mode is provided to a section of the waveguide taper associated with a smaller optical mode. An amplified beam exits the waveguide taper at a section associated with a larger optical mode. The amplified beam is directed to nonlinear conversion optics such as one or more nonlinear crystals to produce high peak power and high beam quality converted light using second or third harmonic generation, or other nonlinear processes.

Abstract translation: 非线性光学系统包括使用诸如允许多模传播但在基模中产生放大和振荡的光纤的锥形波导的光纤放大器。 锥形波导通常设置有用诸如一个或多个半导体激光器的光泵浦源泵浦的有源掺杂剂。 有源波导锥度被选择为从单个或几个模式部分到多模部分逐渐变细，并且将基本模式的种子束提供给与较小光学模式相关联的波导锥度的一部分。 放大的光束在与更大的光学模式相关联的部分处离开波导锥形。 放大的光束被引导到诸如一个或多个非线性晶体的非线性转换光学器件，以产生使用二次或三次谐波产生或其它非线性处理的高峰值功率和高光束质量转换光。

公开(公告)号：US20160043525A1

公开(公告)日：2016-02-11

申请号：US14851702

申请日：2015-09-11

Applicant: FUJIKURA LTD.

Inventor： Tomoya Ichige ,  Ryuichiro Goto ,  Masahiro Kashiwagi

IPC: H01S3/067 ,  H01S3/091

CPC classification number: H01S3/0672 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/091 ,  H01S3/09415 ,  H01S3/1618 ,  H01S2301/20

Abstract: The refractive index of the first core portion 11a is higher than that of a clad 12, and the refractive index of the second core portion 11b is higher than that of the first core portion 11a. When light of the LP01 mode and light of the LP11 mode are standardized by power, in the core 11, an active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration in at least a part of an area where power of light of the LP01 mode is larger than that of light of the LP11 mode than at least a part of an area where the power of light of the LP11 mode is larger than that of light of the LP01 mode.

Abstract translation: 第一芯部11a的折射率高于包层12的折射率，第二芯部11b的折射率高于第一芯部11a的折射率。 当LP01模式的光和LP11模式的光通过功率标准化时，在芯11中，激发发射预定波长的光的有源元件在功率的区域的至少一部分中以更高的浓度被掺杂 与LP11模式的光的功率比LP01模式的光的大小的区域的至少一部分相比，LP01模式的光大于LP11模式的光。

公开(公告)号：US20160006208A1

公开(公告)日：2016-01-07

申请号：US14853135

申请日：2015-09-14

Applicant: IMRA AMERICA, INC

Inventor： Martin E. Fermann

IPC: H01S3/11 ,  H01S3/16 ,  H01S3/094 ,  H01S3/067 ,  H01S3/08

CPC classification number: H01S3/06708 ,  G02B6/26 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/06783 ,  H01S3/08045 ,  H01S3/08054 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094042 ,  H01S3/094069 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1608 ,  H01S3/1618

Abstract: A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.

公开(公告)号：US09211681B2

公开(公告)日：2015-12-15

申请号：US13912714

申请日：2013-06-07

Applicant: OFS Fitel, LLC

Inventor： William R Holland ,  Thierry F Taunay

IPC: G02B6/26 ,  B29D11/00 ,  G02B6/28 ,  G02B6/255 ,  H01S3/067 ,  H01S3/16 ,  H01S3/23 ,  H01S3/094

CPC classification number: B29D11/00663 ,  G02B6/255 ,  G02B6/262 ,  G02B6/2804 ,  H01S3/067 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/1618 ,  H01S3/2383

Abstract: Embodiments of the present invention generally relate to laser combiners, and more specifically, to all-fiber devices that combine optical laser power from multiple separate sources such as lasers or amplifiers. In one embodiment, a method of manufacturing a combiner device comprises: positioning an plurality of fibers into a bundle of fibers; drawing the bundle of fibers to create a tapered section, the tapered section having a first outer diameter at an input end, a second outer diameter at an output end, and a taper ratio of at least three; wherein at least one of the fibers of the bundle of fibers comprises an optical waveguide configured for propagating an optical mode from the input end to the output end, and wherein a mode field diameter of the optical mode at the input end is substantially the same as the mode field diameter at the output end.

Abstract translation: 本发明的实施例一般涉及激光组合器，更具体地，涉及组合来自多个单独源（例如激光器或放大器）的光学激光功率的全光纤器件。 在一个实施例中，制造组合器装置的方法包括：将多根纤维定位成纤维束; 拉伸所述纤维束以形成锥形部分，所述锥形部分在输入端具有第一外径，在输出端具有第二外径，并且具有至少三个的锥形比; 其中所述光纤束中的至少一个光纤包括配置成将光学模式从所述输入端传播到所述输出端的光波导，并且其中所述输入端处的所述光学模式的模场直径基本上与 输出端的模场直径。

公开(公告)号：US09207183B2

公开(公告)日：2015-12-08

申请号：US13683320

申请日：2012-11-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasuyuki Ozeki ,  Kazuyoshi Itoh ,  Wataru Umemura

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/10 ,  G01J3/433 ,  H01S3/13 ,  H01S3/00 ,  H01S3/067 ,  H01S3/16 ,  H01S3/23

CPC classification number: G01N21/65 ,  G01J3/10 ,  G01J3/4338 ,  G01J3/44 ,  G01N2021/655 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/06754 ,  H01S3/1307 ,  H01S3/1611 ,  H01S3/1618 ,  H01S3/2391

Abstract: The measurement apparatus combines first and second lights from first and second light generators to focus the combined light to a sample, and detect the first or second light intensity-modulated by stimulated Raman scattering. The first light generator includes a light dispersion element separating the light from a light introducing optical system in different directions according to light frequencies, and drives at least one of the light dispersion element and part of the light introducing optical system so as to change an incident angle of the light to the light dispersion element to extract part of the separated light, thereby making a light frequency of the first light variable. The second light generator produces a plurality of the second lights having mutually different light frequencies. The apparatus measures a Raman spectrum by changing the light frequency of the first light.

Abstract translation: 测量装置组合来自第一和第二光发生器的第一和第二光，以将组合的光聚焦到样本，并且检测受激拉曼散射强度调制的第一或第二光。 第一光发生器包括：光分散元件，其根据光频率在不同方向上分离光与光导系统的光，并且驱动光分散元件和光导入光学系统的一部分中的至少一个，以便改变事件 光与光分散元件的角度，以提取部分分离的光，从而使第一光的光频率变化。 第二光发生器产生具有相互不同的光频率的多个第二光。 该装置通过改变第一光的光频率来测量拉曼光谱。

公开(公告)号：US09172200B2

公开(公告)日：2015-10-27

申请号：US14249833

申请日：2014-04-10

Applicant: Fianium Ltd.

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Pascal Dupriez

IPC: H01S3/30 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/23 ,  H01S3/094 ,  H01S3/16

CPC classification number: H01S3/0057 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/10007 ,  H01S3/10084 ,  H01S3/1618 ,  H01S3/2308 ,  H01S3/2316 ,  H01S2302/00

Abstract: A source of femtosecond optical pulses comprises a seed pulse source arranged to generate seed pulses; an optical amplifier downstream of the seed pulse source, the optical amplifier having a gain bandwidth; a nonlinear optical element downstream of the amplifier, the optical element spectrally broadening optical pulses via a non linear process to have a spectral bandwidth that exceeds the gain bandwidth of the optical amplifier; and a pulse compressor downstream of the nonlinear optical element and arranged to reduce the temporal duration of optical pulses so as to provide output optical pulses having a femtoseconds time duration.

Abstract translation: 飞秒光脉冲源包括布置成产生种子脉冲的种子脉冲源; 种子脉冲源下游的光放大器，该光放大器具有增益带宽; 放大器下游的非线性光学元件，光学元件通过非线性过程使光学光谱扩展光脉冲以具有超过光放大器的增益带宽的光谱带宽; 以及在所述非线性光学元件下游的脉冲压缩器，并且被布置为减少光脉冲的持续时间，以便提供具有飞秒持续时间的输出光脉冲。

公开(公告)号：US20150263479A1

公开(公告)日：2015-09-17

申请号：US14431943

申请日：2013-08-08

Applicant: THALES HOLDINGS UK PLC

Inventor： Trevor Cook ,  Stephen Lee ,  Mark Silver

IPC: H01S3/0941 ,  H01S3/094 ,  H01S3/04 ,  H01S3/17 ,  H01S3/11 ,  H01S3/06 ,  H01S3/16

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/0606 ,  H01S3/061 ,  H01S3/0617 ,  H01S3/0625 ,  H01S3/094084 ,  H01S3/11 ,  H01S3/113 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/17 ,  H01S5/4025

Abstract: A side pumped laser comprises an elongated gain medium (10) provided between an output coupler (20) and a counter reflector (15) and a pump source (65) configured to provide radiation to the gain medium (10) along a side axis of the gain medium, wherein the laser is configured such that radiation from the pump source is directly incident on the gain medium; and the pump source is provided proximate, adjacent or in contact with the gain medium. The laser material and compositions, geometries and dimensions are designed to both maximise laser performance and to permit the use of construction techniques commonplace in the production of equipment designed for optical telecoms systems to facilitate low cost high volume and miniaturisation. The elongated gain medium (10) may have a polygonal cross-section with a non-coated side surface (55) receiving pump light emitted by a laser diode bar (65) while the other, non-emitting surfaces are coated with for example a gold coating (60) for pump light recycling and cooling of the gain medium by heat conduction. The counter reflector (15) may be provided on one facet of a passive Q-switch (30) and the output coupler (20) on a facet (50b) of the gain medium (10).

Abstract translation: 侧泵浦激光器包括设置在输出耦合器（20）和反向反射器（15）之间的细长增益介质（10）和泵源（65），其被构造成沿着侧向轴线的侧轴向增益介质（10）提供辐射 所述增益介质，其中所述激光器被配置为使得来自所述泵浦源的辐射直接入射在所述增益介质上; 并且所述泵浦源被设置为接近，相邻或与所述增益介质接触。 激光材料和组合物，几何形状和尺寸被设计成最大限度地提高激光器性能，并允许在为光通信系统设计的设备的生产中常用的构造技术使用，以便于低成本大容量和小型化。 细长增益介质（10）可以具有多边形横截面，其中未涂覆的侧表面（55）接收由激光二极管棒（65）发射的泵浦光，而另一个非发射表面涂覆有例如 金涂层（60），用于泵光回收和通过热传导冷却增益介质。 反射器（15）可以设置在无源Q开关（30）的一个面上，输出耦合器（20）位于增益介质（10）的小平面（50b）上。

公开(公告)号：US20150250542A1

公开(公告)日：2015-09-10

申请号：US14719262

申请日：2015-05-21

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

IPC: A61B18/20

CPC classification number: A61B18/20 ,  A61B2018/00464 ,  A61B2018/2065 ,  A61B2018/2244 ,  A61F9/008 ,  A61F9/00804 ,  A61F9/00814 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/0675 ,  H01S3/06758 ,  H01S3/094042 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/302

Abstract: A system and method for selectively processing target tissue material in a patient include a laser subsystem for generating an output laser beam and a catheter assembly including an optical fiber for guiding the output laser beam. The beam has a predetermined selected wavelength between 900 nm and 2600 nm. The catheter assembly is sized to extend through an opening in a first part of the patient to a tissue material processing site within the patient. A beam delivery and focusing subsystem includes a focal distance, which may be adjustable, that positions the beam into at least one focused spot on the target tissue material disposed within a second part of the patient for a duration sufficient to allow laser energy to be absorbed by the target tissue material and converted to heat to produce a desired physical change in the target tissue material without causing undesirable changes to adjacent non-target material.

Abstract translation: 用于选择性地处理患者中的目标组织材料的系统和方法包括用于产生输出激光束的激光子系统和包括用于引导输出激光束的光纤的导管组件。 光束具有在900nm和2600nm之间的预定选定波长。 导管组件的尺寸设置成延伸穿过患者的第一部分中的开口到患者体内的组织材料处理部位。 束输送和聚焦子系统包括可以调整的焦距，其将束定位在设置在患者的第二部分内的目标组织材料上的至少一个聚焦点，持续时间足以允许激光能量被吸收 由靶组织材料转化成热，以在目标组织材料中产生所需的物理变化，而不会对相邻的非目标材料造成不希望的变化。