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    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS
    321.
    发明申请
    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS 审中-公开
    基于双脉冲激光系统的光学扫描和成像系统

    公开(公告)号：WO2010101690A1

    公开(公告)日：2010-09-10

    申请号：PCT/US2010/023123

    申请日：2010-02-04

    Applicant: IMRA AMERICA, INC. ,  FERMANN, Martin, E. ,  HARTL, Ingmar

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

    IPC: H01S3/23

    CPC classification number: H01S3/10046 ,  G01B9/02001 ,  G01N21/31 ,  G01N2021/317 ,  G02B6/02304 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/08054 ,  H01S3/1067 ,  H01S3/1068 ,  H01S3/11 ,  H01S3/1115 ,  H01S3/13 ,  H01S3/1307 ,  H01S3/1392 ,  H01S3/1394 ,  H01S3/2383

    Abstract: The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated, including highly integrated configurations. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. The oscillators are configured to operate at slightly different repetition rates, such that a difference fr in repetition rates is small compared to the values fr1 and fr2 of the repetition rates of the oscillators. The CDSL system also includes a non-linear frequency conversion section optically connected to each oscillator. The section includes a non-linear optical element generating a frequency converted spectral output having a spectral bandwidth and a frequency comb comprising harmonics of the oscillator repetition rates. A CDSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

    Abstract translation: 本发明涉及用于光学成像的扫描脉冲激光系统。 公开了相干双扫描激光系统（CDSL）及其一些应用。 示出了用于实现的各种替代方案，包括高度集成的配置。 在至少一个实施例中，相干双扫描激光系统（CDSL）包括两个被动锁模光纤振荡器。 振荡器被配置为以稍微不同的重复率操作，使得与振荡器的重复率的值fr1和fr2相比，重复率的差fr小。 CDSL系统还包括与每个振荡器光学连接的非线性频率转换部分。 该部分包括产生具有频谱带宽的频率转换频谱输出和包括振荡器重复频率的谐波的频率梳的非线性光学元件。 可以在成像系统中布置CDSL以用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种。

    PRODUCTION OF NANOPARTICLES WITH HIGH REPETITION RATE ULTRASHORT PULSED LASER ABLATION IN LIQUIDS
    322.
    发明申请
    PRODUCTION OF NANOPARTICLES WITH HIGH REPETITION RATE ULTRASHORT PULSED LASER ABLATION IN LIQUIDS 审中-公开
    生产具有高重复率超声波的纳米颗粒脉冲激光在液体中的吸收

    公开(公告)号：WO2010087869A1

    公开(公告)日：2010-08-05

    申请号：PCT/US2009/037643

    申请日：2009-03-19

    Applicant: IMRA AMERICA, INC. ,  LIU, Bing ,  HU, Zhendong ,  MURAKAMI, Makoto ,  CHE, Yong

    Inventor： LIU, Bing ,  HU, Zhendong ,  MURAKAMI, Makoto ,  CHE, Yong

    IPC: B02C19/00

    CPC classification number: B02C19/18 ,  B01J13/0043 ,  B01J19/121 ,  B22F1/0022 ,  B22F9/04 ,  B22F2999/00 ,  B82Y30/00 ,  B22F2202/11

    Abstract: Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.

    Abstract translation: 各种实施方案包括用超快速脉冲激光烧蚀制备化学纯的和稳定分散的金属和金属合金纳米颗粒胶体的方法。 一种方法包括以高重复率以超短激光脉冲辐射淹没在液体中的金属或金属合金靶，冷却包括辐射区域的液体的一部分，以及收集通过激光照射和液体冷却产生的纳米颗粒。 该方法可以用高重复率超快脉冲激光源，用于聚焦和移动脉冲激光束的光学系统，浸没在液体中的金属或金属合金靶和液体循环系统来实现，以冷却激光聚焦体积， 收集纳米颗粒产品。 通过控制各种激光参数，并具有可选的液流运动，该方法提供分散金属和金属合金纳米粒子的稳定胶体。 在各种实施方案中，不需要另外的稳定化学试剂。

    A METHOD FOR DEPOSITING CRYSTALLINE TITANIA NANOPARTICLES AND FILMS
    324.
    发明申请
    A METHOD FOR DEPOSITING CRYSTALLINE TITANIA NANOPARTICLES AND FILMS 审中-公开
    一种用于沉积钛白粉纳米颗粒和膜的方法

    公开(公告)号：WO2008118533A3

    公开(公告)日：2008-11-20

    申请号：PCT/US2008052544

    申请日：2008-01-31

    Applicant: IMRA AMERICA INC ,  HU ZHENDONG ,  CHE YONG ,  LIU BING

    Inventor： HU ZHENDONG ,  CHE YONG ,  LIU BING

    IPC: C23C20/04

    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 (TiO 2 ) 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Titania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）膜沉积到衬底表面上的一步和室温工艺 或金属钛靶。 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。

    BEAM STABILIZED FIBER LASER
    325.
    发明申请
    BEAM STABILIZED FIBER LASER 审中-公开
    光束稳定光纤激光器

    公开(公告)号：WO2008118766A2

    公开(公告)日：2008-10-02

    申请号：PCT/US2008057770

    申请日：2008-03-21

    Applicant: IMRA AMERICA INC ,  CHO GYU C ,  BOUEVITCH OLEG

    Inventor： CHO GYU C ,  BOUEVITCH OLEG

    IPC: H01S3/00

    CPC classification number: B23K26/043 ,  H01S3/0057 ,  H01S3/0071 ,  H01S3/067 ,  H01S3/2308

    Abstract: A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application system.

    Abstract translation: 产生超短脉冲的激光头与头部中的主动光束转向装置集成。 通过适当的接口协议与应用系统的直接链接使得主动设备能够被应用系统直接控制。

    ULTRASHORT LASER MICRO-TEXTURE PRINTING
    326.
    发明申请
    ULTRASHORT LASER MICRO-TEXTURE PRINTING 审中-公开
    ULTRASHORT激光微纹理印刷

    公开(公告)号：WO2008091898A1

    公开(公告)日：2008-07-31

    申请号：PCT/US2008/051713

    申请日：2008-01-22

    Applicant: IMRA AMERICA, INC. ,  SHAH, Lawrence ,  FERMANN, Martin, E.

    Inventor： SHAH, Lawrence ,  FERMANN, Martin, E.

    IPC: B41J2/47

    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 micro-structure features may have average sizes slightly larger, comparable to, and/or smaller than the wavelength of light of the ultrafast 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 micro-structure features may be modified by controlling the environment near the substrate (e.g., the atmosphere, which may include reactive chemical species in some embodiments). In some embodiments, the micro-structure may be fixed for long-term preservation using enamel and/or polymer or other overcoats. 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改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）。 微结构特征可以具有比超快脉冲序列的光的波长稍微大一点，和/或小于其的波长的平均尺寸。 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。 微结构特征可以通过控制衬底附近的环境（例如，在一些实施方案中可能包括反应性化学物质的大气）来改变。 在一些实施方案中，微结构可以使用搪瓷和/或聚合物或其它外涂层固定以进行长期保存。 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。 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。

    PHOTONIC BANDGAP FIBERS
    329.
    发明申请
    PHOTONIC BANDGAP FIBERS 审中-公开
    光电胶带纤维

    公开(公告)号：WO2006072025A3

    公开(公告)日：2007-05-03

    申请号：PCT/US2005047520

    申请日：2005-12-30

    Applicant: IMRA AMERICA INC ,  DONG LIANG ,  PENG XIANG

    Inventor： DONG LIANG ,  PENG XIANG

    IPC: G02B6/02 ,  C03B37/00 ,  G01J3/44

    CPC classification number: G01N21/65 ,  C03B37/01205 ,  C03B37/01208 ,  C03B37/0122 ,  C03B2203/04 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G01N21/774 ,  G01N2021/655 ,  G02B6/02238 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/4206

    Abstract: Included among the many structures described herein are photonic bandgap fibers (100) designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs (100), smaller dimensions of high index material in the cladding (104) and large core size (102) provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding (104) features distributed along concentric rings or circles (306) may be used for achieving wide bandgaps.

    Abstract translation: 包括在本文所描述的许多结构中的是设计成提供期望色散谱的光子带隙光纤（100）。 此外，还讨论了用于实现宽传输频带和较低传输损耗的设计。 例如，在一些光纤设计（100）中，包层（104）中的高折射率材料的较小尺寸和较大的纤芯尺寸（102）在宽光谱范围内提供较小的平坦色散。 在其他示例中，最靠近芯的高折射率环形区域的厚度具有足够大的尺寸以在期望的波长处提供负色散或零色散。 另外，沿着同心环或圆（306）分布的低折射率包层（104）特征可用于实现宽带隙。

    HIGH POWER SHORT PULSE FIBER LASER
    330.
    发明申请
    HIGH POWER SHORT PULSE FIBER LASER 审中-公开
    高功率短脉冲光纤激光器

    公开(公告)号：WO2005094379A3

    公开(公告)日：2006-12-07

    申请号：PCT/US2005010884

    申请日：2005-03-30

    Applicant: IMRA AMERICA INC

    Inventor： GU XINHUA ,  BENDETT MARK ,  CHO GYU CHEON

    IPC: H01S3/30 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/098 ,  H01S3/10 ,  H01S3/102 ,  H01S3/13 ,  H01S3/16 ,  H01S3/23

    CPC classification number: H01S3/1115 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/0941 ,  H01S3/1028 ,  H01S3/1305 ,  H01S3/1618 ,  H01S3/1698

    Abstract: A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of pulses output from the laser. Such pre-compression may be implemented with spectral filters and/or dispersive elements between the oscillator and amplifier. The pulsed laser may have a modular design comprising modular devices that may have Telcordia-graded quality and reliability. Fiber pigtails extending from the device modules can be spliced together to form laser system. In one embodiment, a laser system operating at approximately 1050 nm comprises an oscillator having a spectral bandwidth of approximately 19 nm. This oscillator signal can be manipulated to generate a pulse having a width below approximately 90 fs.

    Abstract translation: 脉冲激光器包括振荡器和放大器。 衰减器和/或预压缩器可以设置在振荡器和放大器之间以提高性能以及可能的从激光器输出的脉冲的质量。 这种预压缩可以用振荡器和放大器之间的频谱滤波器和/或分散元件来实现。 脉冲激光器可以具有包括可能具有Telcordia分级质量和可靠性的模块化设备的模块化设计。 从设备模块延伸的光纤尾纤可以拼接在一起形成激光系统。 在一个实施例中，在大约1050nm操作的激光系统包括具有约19nm的光谱带宽的振荡器。 该振荡器信号可被操纵以产生宽度低于大约90fs的脉冲。

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