公开(公告)号：US10067289B2

公开(公告)日：2018-09-04

申请号：US15593638

申请日：2017-05-12

Applicant: IMRA America, Inc.

Inventor： Liang Dong ,  William Wong ,  Martin E. Fermann

IPC: G02B6/26 ,  G02B6/02 ,  G02B6/32 ,  H01S3/00 ,  H01S3/067 ,  H01S3/23 ,  G02B6/024 ,  G02F1/01 ,  G02B6/036 ,  H01S3/094 ,  G02B6/24 ,  G02B6/00 ,  H01S3/02 ,  H01S3/30 ,  H01S3/16

CPC classification number: G02B6/02357 ,  G02B6/00 ,  G02B6/02 ,  G02B6/02009 ,  G02B6/02033 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/024 ,  G02B6/036 ,  G02B6/03633 ,  G02B6/03694 ,  G02B6/24 ,  G02B6/26 ,  G02B6/262 ,  G02B6/32 ,  G02F1/0134 ,  H01S3/0057 ,  H01S3/02 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/1618 ,  H01S3/2308 ,  H01S3/302 ,  H01S2302/00

Abstract: Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprise cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.

公开(公告)号：US09819142B2

公开(公告)日：2017-11-14

申请号：US13958703

申请日：2013-08-05

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. Fermann

IPC: H01S3/00 ,  H01S3/11 ,  H01S3/30 ,  H01S3/067 ,  H01S3/094 ,  H01S3/109 ,  H01S3/16

CPC classification number: H01S3/1115 ,  H01S3/0057 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094019 ,  H01S3/094042 ,  H01S3/109 ,  H01S3/1112 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/302

Abstract: A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Peak power handling capability of fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. Dispersive pulse stretching in the presence of self-phase modulation and gain results in the formation of high-power parabolic pulses. To ensure a wide tunability of the whole system, Raman-shifting of the compact sources of ultrashort pulses in conjunction with frequency-conversion in nonlinear optical crystals can be implemented, or an Anti-Stokes fiber in conjunction with fiber amplifiers and Raman-shifters are used. Positive dispersion optical amplifiers are used to improve transmission characteristics. An optical communication system utilizes a Raman amplifier fiber pumped by a train of Raman-shifted, wavelength-tunable pump pulses, to thereby amplify an optical signal which counterpropagates within the Raman amplifier fiber with respect to the pump pulses.

公开(公告)号：US20170322370A1

公开(公告)日：2017-11-09

申请号：US15468520

申请日：2017-03-24

Applicant: IMRA America, Inc.

Inventor： Liang Dong ,  Jun Li ,  Hugh McKay ,  Libin Fu ,  Andrius Marcinkevicius

IPC: G02B6/028 ,  H01S3/091 ,  H01S3/067 ,  G02B6/02 ,  H01S3/11 ,  G02B6/14

CPC classification number: G02B6/0288 ,  G02B6/02009 ,  G02B6/02333 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/0283 ,  G02B6/14 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/091 ,  H01S3/11

Abstract: Embodiments of optical fiber may include cladding features that include a material (e.g., fluorine-doped silica glass) that may produce a very low relative refractive index difference with respect to cladding material in which the cladding features are disposed. This relative refractive index difference may be characterized by (n1−n2)/n1, where n1 is the index of refraction of the cladding material in which the cladding features are included, and n2 is the index of refraction of the cladding features. In certain embodiments, the relative refractive index difference may be less than about 4.5×10−3. In various embodiments, the configuration of the cladding features including, for example, the size and spacing of the cladding features, can be selected to provide for confinement of the fundamental mode yet leakage for the second mode and higher modes, which may provide mode filtering, single mode propagation, and/or low bend loss.

公开(公告)号：US09645309B2

公开(公告)日：2017-05-09

申请号：US14500563

申请日：2014-09-29

Applicant: IMRA America, Inc.

Inventor： Liang Dong ,  Donald J. Harter ,  William Wong

IPC: G02B6/032 ,  H01S3/00 ,  G02B6/36 ,  H01S3/067 ,  G02B6/02 ,  G02B6/14 ,  G02B6/024 ,  G02B6/32

CPC classification number: G02B6/032 ,  G02B6/02009 ,  G02B6/02047 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/024 ,  G02B6/14 ,  G02B6/32 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06741 ,  H01S3/06754

Abstract: Holey fibers provide optical propagation. In various embodiments, a large core holey fiber comprises a cladding region formed by large holes arranged in few layers. The number of layers or rows of holes about the large core can be used to coarse tune the leakage losses of the fundamental and higher modes of a signal, thereby allowing the non-fundamental modes to be substantially eliminated by leakage over a given length of fiber. Fine tuning of leakage losses can be performed by adjusting the hole dimension and/or spacing to yield a desired operation with a desired leakage loss of the fundamental mode. Resulting holey fibers have a large hole dimension and spacing, and thus a large core, when compared to traditional fibers and conventional fibers that propagate a single mode. Other loss mechanisms, such as bend loss and modal spacing can be utilized for selected modes of operation of holey fibers.

公开(公告)号：US09570880B2

公开(公告)日：2017-02-14

申请号：US14174269

申请日：2014-02-06

Applicant: IMRA America, Inc.

Inventor： Martin E. Fermann ,  Donald J. Harter

IPC: H01S3/067 ,  H01S3/11 ,  G02B6/26 ,  H01S3/094 ,  H01S3/08 ,  H01S3/16 ,  H01S3/00

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.

Abstract translation: 激光器利用空腔设计，允许从锁模多模光纤激光器稳定地产生高峰值功率脉冲，大大延长了常规锁模单模光纤激光器的峰值功率极限。 可以通过将可饱和吸收体插入空腔中并通过插入一个或多个模式滤波器来确保多模光纤中的基模的振荡来引起锁模。 可以通过将额外的半导体光功率限制器插入空腔中来最小化吸收器的损坏概率。

公开(公告)号：US09450371B2

公开(公告)日：2016-09-20

申请号：US14853135

申请日：2015-09-14

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. Fermann

IPC: H01S3/30 ,  H01S3/11 ,  H01S3/067 ,  G02B6/26 ,  H01S3/094 ,  H01S3/08 ,  H01S3/16 ,  H01S3/00

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：US20160258940A1

公开(公告)日：2016-09-08

申请号：US15029462

申请日：2014-10-17

Applicant: IMRA AMERICA, INC. ,  JAPANESE FOUNDATION FOR CANCER RESEARCH

Inventor： Yuki ICHIKAWA ,  Kiyotaka SHIBA

IPC: G01N33/543 ,  G01N33/574 ,  G01N33/553 ,  A61K49/00

CPC classification number: G01N33/54346 ,  A61K9/14 ,  A61K38/10 ,  A61K47/02 ,  A61K47/10 ,  A61K49/0004 ,  G01N33/553 ,  G01N33/574 ,  G01N33/5748 ,  G01N33/57492 ,  G01N33/587 ,  G01N2333/705 ,  G01N2333/82

Abstract: Provide is a stable metallic nanostructure that causes no aggregation when surface-modified with biomolecule-reactive functional molecules. 30 to 90% of the surface of the metallic nanostructure is covered with at least one or more types of colloid-stabilizing functional molecules. Furthermore, the metallic nanostructure is covered with one or more types of biologically functional molecules.

Abstract translation: 提供一种稳定的金属纳米结构，当用生物分子反应性功能分子进行表面改性时，不会引起聚集。 金属纳米结构表面的30-90％被至少一种或多种胶体稳定功能分子覆盖。 此外，金属纳米结构被一种或多种类型的生物功能分子覆盖。

公开(公告)号：US20160231318A1

公开(公告)日：2016-08-11

申请号：US15015519

申请日：2016-02-04

Applicant: AISIN SEIKI KABUSHIKI KAISHA ,  Mag Array, Inc. ,  IMRA AMERICA, INC.

Inventor： Koji TOYOMARU

IPC: G01N33/543

CPC classification number: G01N33/54386 ,  G01N27/745

Abstract: A specimen testing package includes a sensor chip provided in its front face with a fixing region of a reactant selectively reacting with a specimen contained in a specimen solution, a substrate to which a back face of the sensor chip is fixed, an external connection lead electrically connected to the sensor chip via a wire, an insulator provided in the substrate for insulating the wire from the outside, and a surrounding wall surrounding the fixing region in form of a continuous loop.

Abstract translation: 样本测试包包括：传感器芯片，其前表面设置有选择性地与包含在样本溶液中的样本反应的反应物的固定区域，传感器芯片的背面固定到的基板，电连接的外部连接引线 通过导线连接到传感器芯片，设置在基板中的用于使线材与外部绝缘的绝缘体和围绕固定区域的连续环形的围绕壁。

公开(公告)号：US20160226209A1

公开(公告)日：2016-08-04

申请号：US15041066

申请日：2016-02-11

Applicant: IMRA AMERICA, INC.

Inventor： Martin FERMANN ,  Ingmar HARTL ,  Andrius MARCINKEVICIUS ,  Liang DONG

IPC: H01S3/067 ,  H01S3/10 ,  H01S3/00 ,  H01S3/094 ,  H01S3/13

CPC classification number: H01S3/06737 ,  G02B6/02042 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08059 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094053 ,  H01S3/094076 ,  H01S3/10084 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2333 ,  H01S3/2383

Abstract: High power parallel fiber arrays for the amplification of high peak power pulses are described. Fiber arrays based on individual fiber amplifiers as well as fiber arrays based on multi-core fibers can be implemented. The optical phase between the individual fiber amplifier elements of the fiber array is measured and controlled using a variety of phase detection and compensation techniques. High power fiber array amplifiers can be used for EUV and X-ray generation as well as pumping of parametric amplifiers.

公开(公告)号：US09401579B2

公开(公告)日：2016-07-26

申请号：US14090374

申请日：2013-11-26

Applicant: IMRA America, Inc.

Inventor： Martin E. Fermann ,  Ingmar Hartl ,  Gennady Imeshev

IPC: H01S3/10 ,  H01S3/11 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/105 ,  H01S3/106 ,  H01S3/109 ,  H01S3/16

CPC classification number: H01S3/0057 ,  G02F1/3517 ,  G02F2001/3528 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/10 ,  H01S3/105 ,  H01S3/1053 ,  H01S3/106 ,  H01S3/1067 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/1118 ,  H01S3/1616

Abstract: Modelocked fiber laser resonators may be coupled with optical amplifiers. An isolator optionally may separate the resonator from the amplifier. A reflective optical element on one end of the resonator having a relatively low reflectivity may be employed to couple light from the resonator to the amplifier. Enhanced pulse-width control may be provided with concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers may also be included in the laser cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth may be obtained by matching the dispersion value of the grating to the inverse of the dispersion of the intra-cavity fiber. Frequency comb sources may be constructed from such modelocked fiber oscillators. Low dispersion and an in-line interferometer that provides feedback may assist in controlling the frequency components output from the comb source.