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    Ultrashort laser micro-texture printing
    21.
    发明专利
    Ultrashort laser micro-texture printing 审中-公开
    ULTRASHORT激光微纹理印刷

    公开(公告)号：JP2014133263A

    公开(公告)日：2014-07-24

    申请号：JP2014043164

    申请日：2014-03-05

    Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

    Inventor： LAWRENCE SHAH ,  FERMANN MARTIN E

    IPC: B23K26/00

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

    Abstract: PROBLEM TO BE SOLVED: To use lasers for patterning images on solid substrates, by solving the problem with conventional laser engraving, which yields grayscale images with image contrast determined by machining depth and is sensitive to laser irradiation parameters.SOLUTION: Systems and methods for providing laser texturing of solid substrates are disclosed. 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 thereof.

    Abstract translation: 要解决的问题：通过解决常规激光雕刻的问题，使用激光器对固体基板上的图像进行图像处理，这产生了通过加工深度确定的图像对比度的灰度图像，并且对激光照射参数敏感。解决方案：提供 公开了固体基板的激光纹理化。 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）。 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，激光波长或其组合，可以调制超快脉冲串。

    High output chirp pulse amplifier and compressor
    22.
    发明专利
    High output chirp pulse amplifier and compressor 审中-公开
    高输出脉冲放大器和压缩器

    公开(公告)号：JP2013153196A

    公开(公告)日：2013-08-08

    申请号：JP2013071382

    申请日：2013-03-29

    Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

    Inventor： HARTER DONALD J ,  GALVANAUSKAS ALMANTAS ,  FERMANN MARTIN E

    IPC: G02F1/35 ,  H01S3/10 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/23

    CPC classification number: H01S3/06708 ,  H01S3/0057 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/094003 ,  Y10S372/703

    Abstract: PROBLEM TO BE SOLVED: To provide a compact and inexpensive high output chirp pulse amplifier from 100 mW to 10 W, and a compressor suitable for the high output chirp pulse amplifier.SOLUTION: The high output chirp pulse amplifier generating an ultrashort pulse includes a source 10 for generating an elongation pulse, i.e., elongated pulse light, an output amplification stage 20 for amplifying the elongation pulse, and a compressor 40 for receiving the elongation pulse from the output amplification stage 20 and compressing the elongation pulse. The output amplification stage 20 has a double clad fiber and a pump. Preferably, the compressor 40 includes a fiber grid for compressing a laser pulse signal to have a duration less than a threshold of nonlinear effect, and a grating which accepts the pulse signal compressed by the fiber grid so as to compress the pulse signal furthermore. Chirp pulse amplification action of a clad pump fiber ensures high output chirp pulse amplification with a compact and inexpensive amplifier.

    Abstract translation: 要解决的问题：提供从100mW到10W的紧凑且便宜的高输出啁啾脉冲放大器，以及适用于高输出啁啾脉冲放大器的压缩器。解决方案：产生超短脉冲的高输出啁啾脉冲放大器包括源 10，用于产生延长脉冲，即细长脉冲光，用于放大伸长脉冲的输出放大级20，以及用于从输出放大级20接收延长脉冲并压缩伸长脉冲的压缩器40。 输出放大级20具有双包层光纤和泵。 优选地，压缩机40包括用于压缩激光脉冲信号以具有小于非线性效应阈值的持续时间的光纤网格，以及接受由光纤网格压缩的脉冲信号以进一步压缩脉冲信号的光栅。 包络泵浦光纤的啁啾脉冲放大作用通过紧凑且便宜的放大器确保高输出啁啾脉冲放大。

    Pulsed laser source with adjustable grating compressor
    24.
    发明专利
    Pulsed laser source with adjustable grating compressor 有权
    脉冲激光源与可调式压光机

    公开(公告)号：JP2013070095A

    公开(公告)日：2013-04-18

    申请号：JP2013000030

    申请日：2013-01-04

    Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド ,  Governing Council Of The Univ Of Toronto ,  ザ ガバーニング カウンシル オブ ザ ユニバーシティ オブ トロント

    Inventor： SHAH LAWRENCE

    IPC: H01S3/10 ,  G02F1/37 ,  H01S3/00 ,  H01S3/067

    CPC classification number: H01S3/0057 ,  B23K26/0624 ,  G02B6/02138 ,  G02B6/02142 ,  G02B6/02147 ,  G02B6/13

    Abstract: PROBLEM TO BE SOLVED: To provide a laser source for producing a pulsed laser beam comprising a plurality of ultrashort optical pulses having a variable repetition frequency.SOLUTION: The laser source comprises a fiber oscillator, which outputs optical pulses, and a pulse stretcher disposed to receive the optical pulses. The optical pulses have an optical pulse width. The pulse stretcher has dispersion that increases the optical pulse width yielding stretched optical pulses. The laser source further comprises a fiber amplifier disposed to receive the stretched optical pulses. The fiber optical amplifier has gain so as to amplify the stretched optical pulses. The laser source includes an automatically adjustable grating compressor having dispersion that reduces the optical pulse width. The grating compressor automatically adjusts this dispersion for different repetition frequencies.

    Abstract translation: 解决的问题：提供一种激光源，用于产生具有可变重复频率的多个超短光脉冲的脉冲激光束。 解决方案：激光源包括输出光脉冲的光纤振荡器和布置成接收光脉冲的脉冲展宽器。 光脉冲具有光脉冲宽度。 脉冲展宽器具有增加产生拉伸光脉冲的光脉冲宽度的色散。 激光源还包括光纤放大器，用于接收延伸的光脉冲。 光纤放大器具有增益以便放大拉伸的光脉冲。 激光源包括具有降低光脉冲宽度的色散的自动调节光栅压缩器。 光栅压缩器自动调整不同重复频率的色散。 版权所有（C）2013，JPO＆INPIT

    Polarization maintaining fiber, polarization maintaining fiber laser, passive mode-locking fiber laser, fiber amplifier and optical fiber
    26.
    发明专利
    Polarization maintaining fiber, polarization maintaining fiber laser, passive mode-locking fiber laser, fiber amplifier and optical fiber 审中-公开
    极化维护光纤，极化维护光纤激光器，被动模式锁定光纤激光器，光纤放大器和光纤

    公开(公告)号：JP2008158547A

    公开(公告)日：2008-07-10

    申请号：JP2008040435

    申请日：2008-02-21

    Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

    Inventor： FERMANN MARTIN E ,  HARTER DONALD J DR

    IPC: G02B6/02 ,  G02B6/024 ,  G02B6/036 ,  G02B6/44 ,  H01S3/06 ,  H01S3/067 ,  H01S3/098 ,  H01S3/10

    CPC classification number: H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/094019 ,  H01S3/1118

    Abstract: PROBLEM TO BE SOLVED: To provide a fiber in which amount of polarization mode coupling and polarization mode dispersion are reduced and in which polarization maintaining capacity is increased, and to provide a high efficient fiber amplifier or laser with a polarization maintaining large outer-diameter such that pump light is guided inside a cladding while a large outer cladding ensures decrease in mode-coupling inside the fiber core. SOLUTION: The polarization maintaining fiber includes a fiber core, a first cladding surrounding this core, a coating surrounding this first cladding, and a means for minimizing polarization mode-coupling that couples with a fiber having a minimum fiber outer diameter ≥125 μm. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种其中极化模式耦合和偏振模色散量减少并且其中增加极化维持能力的光纤，并且提供具有极化保持大外部的高效光纤放大器或激光器 直径，使得泵浦光在包层内被引导，而大的外包层确保纤维芯内的模式耦合的减小。 解决方案：偏振保持光纤包括纤维芯，围绕该芯的第一包层，围绕该第一包层的涂层以及用于最小化与具有最小纤维外径≥125的纤维耦合的偏振模耦合的装置 微米。 版权所有（C）2008，JPO＆INPIT

    LASER DRILLING AND PROCESSING METHOD FOR MAKING COUNTER- TAPERED THROUGH-HOLE IN MATERIAL
    29.
    发明专利
    LASER DRILLING AND PROCESSING METHOD FOR MAKING COUNTER- TAPERED THROUGH-HOLE IN MATERIAL 审中-公开

    公开(公告)号：JP2003170286A

    公开(公告)日：2003-06-17

    申请号：JP2002307077

    申请日：2002-10-22

    Applicant: IMRA AMERICA INC

    Inventor： PATEL RAJESH S ,  BOVATSEK JAMES M

    IPC: B23K26/00 ,  B23K26/08 ,  B23K26/38 ,  F02M61/18

    Abstract: PROBLEM TO BE SOLVED: To provide a laser drilling and processing method for forming a hole of a profile having an exit opening larger than an entrance opening. SOLUTION: To form a through-hole 28 which is counter-tapered, a laser beam 26 of sufficient energy for ablating the material is directed onto an impingement location on a first surface 22 of the material along an incidence axis, the incidence axis being offset from a normal to the first surface at the impingement location. The material and the laser beam 26 are relatively rotated by at least 360° so that the through-hole having the exit opening larger than the entrance opening can be formed. COPYRIGHT: (C)2003,JPO

    LASER CONTROLLED MATERIAL-PROCESSING SYSTEM
    30.
    发明专利
    LASER CONTROLLED MATERIAL-PROCESSING SYSTEM 审中-公开

    公开(公告)号：JP2002316278A

    公开(公告)日：2002-10-29

    申请号：JP2002031756

    申请日：2002-02-08

    Applicant: IMRA AMERICA INC

    Inventor： PATEL RAJESH S

    IPC: B23K26/00 ,  B23K26/06 ,  B23K26/14 ,  B23K26/36 ,  C03C23/00

    Abstract: PROBLEM TO BE SOLVED: To provide a material-processing system using a pulsed laser for the purpose of removing a material to make a clean microfabrication surface. SOLUTION: The material-processing system using a pulsed laser is composed of a process for generating a pulsed laser beam, a process for converging the beam on a plane above the surface of a sample, a process for causing breakdown of the material at a point to be irradiated with the laser beam, and a process for removing or reforming the material of the sample. Arranging a focal plane above the sample permits the use of a pulsed laser beam of higher intensity, minimizing the adverse effect on the condition of the sample surface for laser energy absorption. In the secondary aspect, the material-processing system further includes the utilization of vacuum for removing the beam- processed material desirably by means of a push/pull type air vacuum system arranged slightly above the surface of the sample, thereby providing a clean sample and surface for operation.

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