公开(公告)号：US08848748B2

公开(公告)日：2014-09-30

申请号：US13358250

申请日：2012-01-25

Applicant: Gyu Cho ,  Jingzhou Xu

Inventor： Gyu Cho ,  Jingzhou Xu

IPC: H01S3/30 ,  H01S3/098 ,  H01S3/00 ,  H01S3/067 ,  H01S3/13 ,  H01S3/23

CPC classification number: H01S3/302 ,  H01S3/0057 ,  H01S3/06712 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/2308 ,  H01S2301/085

Abstract: Methods and systems for delivery of high peak power optical pulses through optical fiber are disclosed. Raman soliton generation is utilized to maintain the properties of the pulses in the delivery fiber. The apparatus can comprise any high peak power pulse source and delivery fiber supporting Raman soliton generation.

Abstract translation: 公开了通过光纤传送高峰值功率光脉冲的方法和系统。 利用拉曼孤子产生来保持输送纤维中脉冲的性质。 该装置可以包括支持拉曼孤子生成的任何高峰值功率脉冲源和输送光纤。

公开(公告)号：US08824847B2

公开(公告)日：2014-09-02

申请号：US13915444

申请日：2013-06-11

Applicant: IMRA America, Inc.

Inventor： Liang Dong ,  Brian Thomas ,  Libin Fu

IPC: G02B6/02 ,  G02B6/036 ,  G02F1/365 ,  C03B37/012 ,  G02F1/39 ,  H01S3/00 ,  H01S3/067

CPC classification number: G02F1/365 ,  C03B37/0122 ,  C03B2201/82 ,  C03B2201/86 ,  C03B2203/10 ,  C03B2203/14 ,  C03B2203/42 ,  C03B2205/08 ,  C03B2205/10 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02357 ,  G02F1/395 ,  H01S3/0057 ,  H01S3/06729 ,  H01S3/06754

Abstract: Various embodiments of optical fiber designs and fabrication processes for ultra small core fibers (USCF) are disclosed. In some embodiments, the USCF includes a core that is at least partially surrounded by a region comprising first features. The USCF further includes a second region at least partially surrounding the first region. The second region includes second features. In an embodiment, the first features are smaller than the second features, and the second features have a filling fraction greater than about 90 percent. The first features and/or the second features may include air holes. Embodiments of the USCF may provide dispersion tailoring. Embodiments of the USCF may be used with nonlinear optical devices configured to provide, for example, a frequency comb or a supercontinuum.

Abstract translation: 公开了用于超小芯纤维（USCF）的光纤设计和制造工艺的各种实施例。 在一些实施例中，USCF包括至少部分地被包括第一特征的区域包围的芯。 USCF还包括至少部分围绕第一区域的第二区域。 第二个区域包括第二个特征。 在一个实施例中，第一特征小于第二特征，并且第二特征具有大于约90％的填充分数。 第一特征和/或第二特征可以包括气孔。 USCF的实施例可以提供色散调整。 USCF的实施例可以与被配置为提供例如频率梳或超连续谱的非线性光学装置一起使用。

公开(公告)号：US20140219296A1

公开(公告)日：2014-08-07

申请号：US13682309

申请日：2012-11-20

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. FERMANN ,  Jens BETHGE ,  Ingmar HARTL

IPC: H01S3/00 ,  G02B6/02

CPC classification number: H01S3/0092 ,  G02B6/02038 ,  G02F1/3534 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/067 ,  H01S3/06725 ,  H01S3/094046 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/30 ,  H01S3/302

Abstract: Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-IR sources producing very short pulses and/or mid-IR sources based on a mode locked fiber lasers are utilized. A difference frequency generator receives outputs from the ultrafast sources, and generates an output including a difference frequency. The output power from the difference frequency generator can further be enhanced via the implementation of large core dispersion shifted fibers. Exemplary applications of the compact, high brightness mid-IR light sources include medical applications, spectroscopy, ranging, sensing and metrology.

Abstract translation: 公开了紧凑的激光系统，其包括与非线性晶体或波导组合的超快激光源。 在一些实现中，利用基于模式锁定光纤激光器产生非常短脉冲和/或中红外光源的基于光纤的中红外光源。 差频发生器接收来自超快源的输出，并产生包括差频的输出。 来自差分频率发生器的输出功率可以通过实施大型核心色散位移光纤进一步提高。 紧凑的高亮度中红外光源的示例性应用包括医疗应用，光谱学，测距，感测和计量学。

公开(公告)号：US20140202994A1

公开(公告)日：2014-07-24

申请号：US14221704

申请日：2014-03-21

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. FERMANN

IPC: H01S3/067 ,  B23K26/00

CPC classification number: H01S3/06725 ,  B23K26/352 ,  B23K26/361 ,  B23K26/362 ,  H01S3/06712 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/06791 ,  H01S3/10015 ,  H01S3/10092 ,  H01S3/1112 ,  H01S3/1118 ,  H01S3/1608 ,  H01S3/1616

Abstract: Compact high brightness light sources for the mid and far IR spectral region, and exemplary applications are disclosed based on passively mode locked Tm fiber comb lasers. In at least one embodiment the coherence of the comb sources is increased in a system utilizing an amplified single-frequency laser to pump the Tm fiber comb laser. The optical bandwidth generated by the passively mode locked Tm fiber comb laser is further decreased by using simultaneous 2nd and 3rd order dispersion compensation using either appropriate chirped fiber Bragg gratings for dispersion compensation, or fibers with appropriately selected values of 2nd and 3rd order dispersion. Fibers with large anomalous values of third order dispersion, or fibers with large numerical apertures, for example fibers having air-holes formed in the fiber cladding may be utilized.

Abstract translation: 基于被动模式锁定的Tm光纤梳状激光器公开了用于中红外光谱区域和远红外光谱区域的紧凑型高亮度光源，以及示例性应用。 在至少一个实施例中，在使用放大的单频激光器来泵浦Tm纤维梳状激光器的系统中，梳状源的相干性增加。 通过使用用于色散补偿的适当的啁啾光纤布拉格光栅或具有适当选择的二阶和三阶色散值的光纤，通过使用同时的二次和三阶色散补偿来进一步减少由被动模式锁定的Tm光纤梳状激光器产生的光学带宽。 可以使用具有三阶分散的大异常值的纤维或具有大数值孔径的纤维，例如在纤维包层中形成具有空气孔的纤维。

公开(公告)号：US08785813B2

公开(公告)日：2014-07-22

申请号：US13421372

申请日：2012-03-15

Applicant: Lawrence Shah ,  Gyu Cheon Cho ,  Jingzhou Xu

Inventor： Lawrence Shah ,  Gyu Cheon Cho ,  Jingzhou Xu

IPC: B23K26/00 ,  B23K26/06 ,  B23K26/40 ,  B23K26/36

CPC classification number: H01L21/268 ,  B23K26/0624 ,  B23K26/064 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/082 ,  B23K26/083 ,  B23K26/364 ,  B23K26/38 ,  B23K26/40 ,  B23K2101/40 ,  B23K2103/50

Abstract: Various embodiments may be used for laser-based modification of target material of a workpiece while advantageously achieving improvements in processing throughput and/or quality. Embodiments of a method of processing may include focusing and directing laser pulses to a region of the workpiece at a pulse repetition rate sufficiently high so that material is efficiently removed from the region and a quantity of unwanted material within the region, proximate to the region, or both is reduced relative to a quantity obtainable at a lower repetition rate. Embodiments of an ultrashort pulse laser system may include a fiber amplifier or fiber laser. Various embodiments are suitable for at least one of dicing, cutting, scribing, and forming features on or within a semiconductor substrate. Workpiece materials may include metals, inorganic or organic dielectrics, or any material to be micromachined with femtosecond, picosecond, and/or nanosecond pulses.

Abstract translation: 各种实施例可以用于对工件的目标材料进行基于激光的修改，同时有利地实现处理生产量和/或质量的改善。 处理方法的实施例可以包括将激光脉冲聚焦并以足够高的脉冲重复频率将激光脉冲引导到工件的区域，使得材料有效地从该区域移除并且在该区域内靠近该区域的一些不想要的材料， 或者两者相对于以较低的重复率可获得的量减少。 超短脉冲激光系统的实施例可以包括光纤放大器或光纤激光器。 各种实施例适合于在半导体衬底上或半导体衬底内的切割，切割，划线和形成特征中的至少一个。 工件材料可以包括金属，无机或有机电介质，或任何要用飞秒，皮秒和/或纳秒脉冲微加工的材料。

公开(公告)号：US20140192403A1

公开(公告)日：2014-07-10

申请号：US14174269

申请日：2014-02-06

Applicant: IMRA America, Inc.

Inventor： Martin E. Fermann ,  Donald J. Harter

IPC: H01S3/067 ,  G02B6/26

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：US20140185065A1

公开(公告)日：2014-07-03

申请号：US14198434

申请日：2014-03-05

Applicant: IMRA America, inc.

Inventor： Lawrence Shah ,  Martin E. Fermann

IPC: G06K15/12 ,  H04N1/407 ,  B41J2/44 ,  H04N1/40

CPC classification number: G06K15/1209 ,  B41J2/442 ,  B41J2/471 ,  G06K15/129 ,  H04N1/40037 ,  H04N1/407

Abstract: Systems and methods for providing laser texturing of solid substrates are disclosed. The texturing may be used to provide grayscale images obtainable from substrates, which may include steel, aluminum, glass, and silicon. In some embodiments, images may be obtainable from the substrate by modifying the reflective, diffractive, and/or absorptive features of the substrate or the substrate surface by forming random, periodic, and/or semi-periodic micro-structure features on the substrate (or substrate surface) by an ultrafast laser pulse train. The ultrafast pulse train may be modulated in order to vary, for example, optical exposure time, pulse train intensity, laser polarization, laser wavelength, or a combination of the aforementioned. The ultrafast pulse train and the substrate may be scanned with respect to each other to provide different optical energies to different regions of the substrate (or substrate surface). In some embodiments, the image is provided by making one or more passes of the ultrafast laser pulse train relative to the substrate.

Abstract translation: 公开了用于提供固体基底的激光纹理化的系统和方法。 纹理可以用于提供可从包括钢，铝，玻璃和硅的基底获得的灰度图像。 在一些实施例中，可以通过在衬底上形成随机，周期性和/或半周期微结构特征来修饰衬底或衬底表面的反射，衍射和/或吸收特征，从衬底获得图像（ 或基板表面）。 为了改变例如光学曝光时间，脉冲串强度，激光偏振，激光波长或上述的组合，可以调制超快脉冲串。 可以相对于彼此扫描超快速脉冲串和衬底，以向衬底（或衬底表面）的不同区域提供不同的光学能量。 在一些实施例中，通过相对于衬底进行超快激光脉冲串的一次或多次通过来提供图像。

公开(公告)号：US08705924B2

公开(公告)日：2014-04-22

申请号：US13610270

申请日：2012-09-11

Applicant: Liang Dong ,  Xiang Peng ,  Brian K Thomas

Inventor： Liang Dong ,  Xiang Peng ,  Brian K Thomas

IPC: G02B6/00 ,  G02B6/32 ,  G02B6/02

CPC classification number: G02B6/02 ,  C03B37/01211 ,  C03B37/0124 ,  C03B37/01254 ,  C03B37/0126 ,  C03B37/018 ,  C03B2203/14 ,  C03B2203/30 ,  G02B6/02261 ,  G02B6/02333 ,  G02B6/02366 ,  G02B6/03644

Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about −300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.

Abstract translation: 所描述的各种实施例包括具有大约1的数值孔径（NA）的超高数值孔径光纤（UHNAF）的光纤设计和制造工艺。UHNAF的各种实施例可以具有大于约0.7，大于约0.8的NA 大于约0.9，或大于约0.95。 UHNAF的实施例可以具有小的芯直径并且可能具有低的传输损耗。 具有足够小的芯直径的UHNAF的实施例提供单模操作。 一些实施例具有低V数，例如小于2.4和大分散。 UHNAF的一些实施方案在一些实施方案中具有非常大的负色散，例如小于约-300ps / nm / km。 还公开了使用UHNAF的系统和装置。

公开(公告)号：US08697129B2

公开(公告)日：2014-04-15

申请号：US13038788

申请日：2011-03-02

Applicant: Wei Qian ,  Makoto Murakami ,  Yuki Ichikawa ,  Yong Che

Inventor： Wei Qian ,  Makoto Murakami ,  Yuki Ichikawa ,  Yong Che

IPC: A61K9/14 ,  A61K33/24

CPC classification number: A61K49/0002 ,  A61K9/0019 ,  A61K9/1688 ,  A61K41/0057 ,  A61K47/10 ,  B01J13/0034 ,  B01J13/0043 ,  B82Y5/00 ,  B82Y30/00 ,  B82Y40/00 ,  G01N21/64 ,  G01N21/658 ,  G01N33/531 ,  G01N33/54346 ,  G01N2021/3595

Abstract: In the present invention, a method of producing stable bare colloidal gold nanoparticles is disclosed. The nanoparticles can subsequently be subjected to partial or full surface modification. The method comprises preparation of colloidal gold nanoparticles in a liquid by employing a top-down nanofabrication method using bulk gold as a source material. The surface modification of these nanoparticles is carried out by adding one or multiple types of ligands each containing functional groups which exhibit affinity for gold nanoparticle surfaces to produce the conjugates. Because of the high efficiency and excellent stability of the nanoparticles produced by this method, the fabricated gold nanoparticle conjugates can have surface coverage with functional ligands which can be tuned to be any percent value between 0 and 100%.

Abstract translation: 在本发明中，公开了一种制备稳定的裸胶体金纳米颗粒的方法。 随后可以对纳米颗粒进行部分或全面修饰。 该方法包括使用以大块金为原料的自顶向下纳米制造方法在液体中制备胶体金纳米颗粒。 这些纳米颗粒的表面改性是通过添加一种或多种类型的配体，每个配体包含对金纳米颗粒表面具有亲和性以产生共轭物的官能团。 由于通过该方法制备的纳米颗粒的高效率和优异的稳定性，所制备的金纳米颗粒共轭物可以具有表面覆盖的功能性配体，其可被调整为0至100％之间的任何百分比值。

公开(公告)号：US20140093744A1

公开(公告)日：2014-04-03

申请号：US14097633

申请日：2013-12-05

Applicant: IMRA AMERICA, INC.

Inventor： ZHENDONG HU ,  Yong Che ,  Bing Liu

IPC: C30B23/08 ,  C30B29/16 ,  C23C14/28

CPC classification number: C30B23/08 ,  C23C14/083 ,  C23C14/28 ,  C30B29/16

Abstract: A one-step and room-temperature process for depositing nanoparticles or nanocomposite (nanoparticle-assembled) films of metal oxides such as crystalline titanium dioxide (TiO2) onto a substrate surface using ultrafast pulsed laser ablation of Titania or metal titanium target. The system includes a pulsed laser with a pulse duration ranging from a few femtoseconds to a few tens of picoseconds, an optical setup for processing the laser beam such that the beam is focused onto the target surface with an appropriate average energy density and an appropriate energy density distribution, and a vacuum chamber in which the target and the substrate are installed and background gases and their pressures are appropriately adjusted.

Abstract translation: 使用二氧化钛或金属钛靶的超快速脉冲激光烧蚀将金属氧化物如结晶二氧化钛（TiO 2）的纳米颗粒或纳米复合材料（纳米颗粒组装的）膜沉积到基底表面上的一步和室温方法。 该系统包括脉冲激光，其脉冲持续时间范围从几飞秒到几十皮秒，用于处理激光束的光学设置，使得光束以适当的平均能量密度和适当的能量聚焦到目标表面上 密度分布，以及真空室，其中安装了目标物和基质，背景气体及其压力被适当调节。