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    Apparatus and method for ophthalmologic surgical procedures using a femtosecond fiber laser
    5.
    发明公开
    Apparatus and method for ophthalmologic surgical procedures using a femtosecond fiber laser 审中-公开
    Vorrichtung und ophtalmologische chirurgische Verfahren mit Femtosekunden-Faserlaser

    公开(公告)号：EP2865362A1

    公开(公告)日：2015-04-29

    申请号：EP14198073.0

    申请日：2004-05-28

    Applicant: IMRA America, Inc. ,  Carl Zeiss Meditec AG

    Inventor： Bendett, Mark ,  Bischoff, Mark ,  Gerlach, Mario ,  Mühlhoff, Dirk

    IPC: A61F9/008

    CPC classification number: A61F9/0084 ,  A61F9/00827 ,  A61F9/00836 ,  A61F2009/00872 ,  B23K26/0624

    Abstract: Apparatus and method to generate a stream of pulses having a pulse repetition rate of at least about 50000 pulses per second and a per-pulse length of less than one picosecond, and to scan and focus the stream to an output light pattern suitable to sculpt tissue for a surgical procedure (e.g., ophthalmologic) using at least a high number of pulses to complete the operation in a matter of a few seconds, e.g., 100000 pulses in less than ten seconds. Some embodiments create a preconditioning negative dispersion that compensates for positive dispersion in the scanning system, in some embodiments; a lenticule is cut using the laser and scanning system and is mechanically removed through a side slit formed through the cornea surface.

    Abstract translation: 产生具有至少约50000个脉冲每秒的脉冲重复率和小于1皮秒的每脉冲长度的脉冲流的装置和方法，并且将流扫描并聚焦到适合于雕刻组织的输出光图案 用于使用至少大量脉冲的外科手术（例如，眼科），以在几秒钟内完成手术，例如在10秒以内的100000个脉冲。 在一些实施例中，一些实施例创建补偿扫描系统中的正色散的预处理负色散; 使用激光和扫描系统切割微透镜，并且通过通过角膜表面形成的侧缝被机械地去除。

    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS
    7.
    发明公开
    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS 审中-公开
    宽带GENERATING MID-IR及与玻璃纤维KONTINUA

    公开(公告)号：EP2686732A1

    公开(公告)日：2014-01-22

    申请号：EP12758228.6

    申请日：2012-03-08

    Applicant: IMRA America, Inc.

    Inventor： FERMANN, Martin E. ,  HARTL, Ingmar

    IPC: G02F1/365 ,  G02B6/34 ,  G02F1/35

    CPC classification number: G02F1/365 ,  G02F2001/3528 ,  H01S3/10

    Abstract: Coherent and compact supercontinuum light sources for the mid IR spectral regime are disclosed and exemplary applications thereof. The supercontinuum generation is based on the use of highly nonlinear fibers or waveguides. In at least one embodiment the coherence of the supercontinuum sources is increased using low noise mode locked short pulse sources. Compact supercontinuum light sources can be constructed with the use of passively mode locked fiber or diode lasers. Wavelength tunable sources can be constructed using appropriate optical filters or frequency conversion sections. Highly coherent supercontinuum sources further facilitate coherent detection schemes and can improve the signal/noise ratio in lock in detection schemes.

    PRODUCTION OF NANOPARTICLES WITH HIGH REPETITION RATE ULTRASHORT PULSED LASER ABLATION IN LIQUIDS
    9.
    发明公开
    PRODUCTION OF NANOPARTICLES WITH HIGH REPETITION RATE ULTRASHORT PULSED LASER ABLATION IN LIQUIDS 有权
    纳米颗粒在与高重复率超短脉冲，脉冲激光烧蚀产液

    公开(公告)号：EP2391455A1

    公开(公告)日：2011-12-07

    申请号：EP09839437.2

    申请日：2009-03-19

    Applicant: Imra America, Inc.

    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.

    Doped rare earth and large effective area optical fibers for fiber lasers and amplifiers
    10.
    发明公开
    Doped rare earth and large effective area optical fibers for fiber lasers and amplifiers 有权
    稀土掺杂光纤和光纤大有效面积光纤激光器和放大器

    公开(公告)号：EP2292566A2

    公开(公告)日：2011-03-09

    申请号：EP10191210.3

    申请日：2007-06-29

    Applicant: IMRA America, Inc.

    Inventor： Dong, Liang ,  Peng, Xiang

    IPC: C03C3/06 ,  C03C3/097 ,  C03C13/04 ,  C03C4/00 ,  C03B37/00

    CPC classification number: G02B6/03616 ,  C03B37/01217 ,  C03B37/0122 ,  C03B37/01838 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2203/14 ,  C03B2203/23 ,  C03B2203/30 ,  C03B2203/42 ,  C03C3/06 ,  C03C3/097 ,  C03C4/0071 ,  C03C13/046 ,  C03C2201/10 ,  C03C2201/28 ,  C03C2201/34 ,  C03C2201/3488 ,  G02B6/024 ,  G02B6/032 ,  G02B6/03622 ,  G02B6/03633 ,  G02B6/03638 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/1618

    Abstract: The present invention relates to a large-core optical fiber and a large-core optical fiber system, wherein the optical fiber comprises of a core having a core raidius ρ and a core index of refraction n core ; a first cladding disposed about said core, said first cladding having an outer radius ρ 1 and an index of refraction n cl , said core and said first cladding having a difference in index of refraction Δn = n core - n cl , and a numerical aperture (NA) less than about 0.05, said NA determined by n core and n cl ; and a second cladding disposed about said first cladding, said first cladding and said second cladding having a difference in index of refraction Δn 1 , wherein the first cladding radius ρ 1 is greater than about 1.1 ρ and less than about 2 ρ and the refractive index difference between said first cladding and said second cladding, Δn 1 , is greater than about 1.5 Δn and less than about 50 Δn. The optical fiber system for providing optical amplification consists of the large-core optical fiber, wherein said core of said large-core fiber is doped with one or more types of rare earth ions, said large-core optical fiber comprising of a combined waveguide formed by said core and said first cladding layer; an optical pump optically coupled to said large-core optical fiber; and an optical source optically coupled to an input of said large-core optical fiber.

    Abstract translation: 本发明涉及一种大芯光纤和大芯光纤系统，worin芯的光纤包括具有芯raidius A和折射率n芯的芯指数; 第一包层置于所述芯，所述具有outerRadius A 1和折射率n的CL，所述芯和具有折射率的差。所述第一包层的折射率的第一包层“N = N核心 - N的CL，和数值 孔径（NA）大于约12:05以下，说NA测定用n芯和n CL; 和第二包层置于所述第一包，所述第一包层和所述的第二包层的折射率的差的“n 1，worin第一包层的半径，A 1为大于约2a和折射率大于约1.1且小于 说第一包层和第二包层说，的折射率之差的“n 1，大于约1.5”大于约50的“n秒和更少。 对于大芯光纤的提供光学放大besteht光纤系统，worin所述大芯光纤的芯掺杂有一种或多种类型的稀土离子，所述大芯光纤包括组合的波导形成 由所述芯和所述第一包层; 到光学耦合到所述大芯光纤光泵浦; 和光源光学在所述大芯光纤的输入端耦合到。

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