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    COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR IR
    101.
    发明申请
    COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR IR 有权
    紧凑的高亮度光源，用于中红外和红外线

    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。

    COMPACT, COHERENT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR
    102.
    发明申请
    COMPACT, COHERENT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR 审中-公开
    紧凑，相关，中等和远红外的高亮度光源

    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。

    ULTRASHORT LASER MICRO-TEXTURE PRINTING
    104.
    发明申请
    ULTRASHORT LASER MICRO-TEXTURE PRINTING 有权
    ULTRASHORT激光微纹理印刷

    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。

    METHOD FOR DEPOSITING CRYSTALLINE TITANIA NANOPARTICLES AND FILMS
    105.
    发明申请
    METHOD FOR DEPOSITING CRYSTALLINE TITANIA NANOPARTICLES AND FILMS 审中-公开
    沉积钛铁氧体纳米颗粒和膜的方法

    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。

    APPARATUS FOR HIGH CONTRAST OPTICAL SIGNALING, AND EXEMPLARY APPLICATIONS
    107.
    发明申请
    APPARATUS FOR HIGH CONTRAST OPTICAL SIGNALING, AND EXEMPLARY APPLICATIONS 有权
    高对比度光信号的设备和示例应用

    公开(公告)号：US20130093581A1

    公开(公告)日：2013-04-18

    申请号：US13648484

    申请日：2012-10-10

    Applicant: IMRA AMERICA, Inc.

    Inventor： Alan Y. ARAI

    IPC: B60Q1/00

    CPC classification number: B60R1/1207 ,  B60Q1/00 ,  B60R2001/1215 ,  G09G2380/06 ,  G09G2380/10

    Abstract: A display apparatus generates a high visibility optical signal, such as an ICON, the ICON comprising a symbol, shape, or other image-like representation. The ICON becomes visible at an observation point during an illumination ON-state. The ICON may be formed as a portion of display medium, for example as a machined portion of a mirror capable of forming images of a scene by reflection in normal operation. The visibility of the ICON in the illumination OFF-state from an observation point is sufficiently low such that the normal operation of the display medium is maintained. The display apparatus may be used in a blind spot warning system for a vehicle. Visible wavelength LEDs, RGB LEDs and/or diode lasers may be utilized as an illumination source. Ultrashort laser processing or other methods for material modification may be utilized to form microscopic features which distribute incident light, increasing the visibility of the optical signal at an observation point in an ON-state, with very low visibility in the OFF-state and minimal effect on the image in the display medium in the OFF state.

    Abstract translation: 显示装置产生诸如ICON的高可见度光信号，ICON包括符号，形状或其他图像样表示。 ICON在照明ON状态的观察点变得可见。 ICON可以形成为显示介质的一部分，例如作为能够在正常操作中通过反射来形成场景的图像的镜子的加工部分。 ICON在观察点的照明截止状态下的可见度足够低，从而维持显示介质的正常操作。 显示装置可以用于车辆的盲点警告系统。 可见波长LED，RGB LED和/或二极管激光器可用作照明源。 可以使用超短激光加工或其他材料修饰方法来形成分布入射光的微观特征，在ON状态的观察点增加光信号的可视性，在OFF状态下具有非常低的可见度和最小的影响 在显示介质中的图像处于OFF状态。

    Stable difference frequency generation using fiber lasers
    110.
    发明授权
    Stable difference frequency generation using fiber lasers 有权

    公开(公告)号：US10690994B2

    公开(公告)日：2020-06-23

    申请号：US16191127

    申请日：2018-11-14

    Applicant: IMRA America, Inc.

    Inventor： Kevin F. Lee ,  Martin E. Fermann

    IPC: G02F1/35 ,  G02F1/01 ,  G02F1/355 ,  G02F1/365 ,  H01S3/067 ,  H01S3/16 ,  H01S3/00 ,  G02B6/00 ,  H01S3/23 ,  H01S3/13 ,  H01S3/11 ,  H01S3/30

    Abstract: Systems and methods for stabilizing mid-infrared light generated by difference frequency mixing may include a mode locked Er fiber laser that generates pulses, which are split into a pump arm and a wavelength shifting, signal arm. Pump arm pulses are amplified in Er doped fiber. Shifting arm pulses are amplified in Er doped fiber and shifted to longer wavelengths in Raman-shifting fiber or highly nonlinear fiber, where they may be further amplified by Tm doped fiber, and then optionally further wavelength shifted. Pulses from the two arms can be combined in a nonlinear crystal such as orientation-patterned gallium phosphide, producing a mid-infrared difference frequency, as well as nonlinear combinations (e.g., sum frequency) having near infrared and visible wavelengths. Optical power stabilization can be achieved using two wavelength ranges with spectral filtering and multiple detectors acquiring information for feedback control. Controlled fiber bending can be used to stabilize optical power.

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