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    COMPACT FIBER SHORT PULSE LASER SOURCES
    81.
    发明申请
    COMPACT FIBER SHORT PULSE LASER SOURCES 有权
    紧凑光纤短脉冲激光源

    公开(公告)号：US20160248217A1

    公开(公告)日：2016-08-25

    申请号：US15146675

    申请日：2016-05-04

    Applicant: IMRA America, Inc.

    Inventor： Martin E. Fermann

    IPC: H01S3/11 ,  H01S3/16 ,  H01S3/106 ,  H01S3/13 ,  H01S3/067 ,  H01S3/1055

    CPC classification number: H01S3/1112 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/0675 ,  H01S3/1055 ,  H01S3/1067 ,  H01S3/107 ,  H01S3/1115 ,  H01S3/1307 ,  H01S3/161 ,  H01S3/1616 ,  H01S2301/085

    Abstract: Examples of robust self-starting passively mode locked fiber oscillators are described. In certain implementations, the oscillators are configured as Fabry-Perot cavities containing an optical loop mirror on one cavity end and a bulk mirror or saturable absorber on the other end. The loop mirror can be further configured with an adjustable line phase delay to optimize modelocking. All intra-cavity fiber(s) can be polarization maintaining. Dispersion compensation components such as, e.g., dispersion compensation fibers, bulk diffraction gratings or fiber Bragg gratings may be included. The oscillators may include a bandpass filter to obtain high pulse energies when operating in the similariton regime. The oscillator output can be amplified and used whenever high power short pulses are required. For example the oscillators can be configured as frequency comb sources or supercontinuum sources. In conjunction with repetition rate modulation, applications include dual scanning delay lines and trace gas detection.

    Abstract translation: 描述了鲁棒自启动被动模式锁定光纤振荡器的示例。 在某些实施方案中，振荡器被配置为在一个空腔端部上包含光学环路镜和另一端的体镜或可饱和吸收体的法布里 - 珀罗腔。 环路镜可进一步配置有可调线路相位延迟以优化锁模。 所有腔内光纤可以是偏振维持。 可以包括色散补偿组件，例如色散补偿光纤，体衍射光栅或光纤布拉格光栅。 振荡器可以包括带通滤波器，以在相似状态下操作时获得高脉冲能量。 只要需要高功率短脉冲，振荡器输出就可以被放大和使用。 例如，振荡器可以配置为频率梳源或超连续谱源。 结合重复率调制，应用包括双扫描延迟线和痕量气体检测。

    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS
    82.
    发明申请
    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS 审中-公开
    极化和极化维护泄漏通道纤维

    公开(公告)号：US20160245989A1

    公开(公告)日：2016-08-25

    申请号：US15146693

    申请日：2016-05-04

    Applicant: IMRA America, Inc.

    Inventor： Shigeru Suzuki ,  Hugh A. McKay ,  Martin E. Fermann

    IPC: G02B6/024 ,  G02B6/036 ,  G02B6/02

    CPC classification number: G02B6/024 ,  G02B6/02009 ,  G02B6/02042 ,  G02B6/02314 ,  G02B6/02319 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/03694

    Abstract: This disclosure relates to polarizing optical fibers and polarization maintaining optical fibers, including active and/or passive implementations. An embodiment includes a polarizing (PZ) optical fiber that includes stress applying parts (SAPs) disposed in a first cladding region, the SAPs comprising a material with a thermal expansion coefficient, αSAP. A core region is at least partially surrounded by cladding features and the SAPs. The core includes glass with a thermal expansion coefficient, αcore. The arrangement of the SAPs satisfies: Rsc=dSAP/Dsc, where Dsc is the SAP center to core center distance, and dSAP is the average SAP diameter, and dα=|αSAP−αcore|, and where Rsc and dα may be sufficiently large to induce stress birefringence into the core and to provide for polarized output. Active fibers in which a portion of the fiber is doped may be implemented for application in fiber lasers, fiber amplifiers, and/or optical pulse compressors.

    Abstract translation: 本公开涉及偏振光纤和偏振维持光纤，包括有源和/或无源实现。 一个实施例包括偏振（PZ）光纤，其包括设置在第一包层区域中的应力施加部分（SAP），SAP包括具有热膨胀系数的材料αSAP。 核心区域至少部分地被包层特征和SAP包围。 核心包括具有热膨胀系数αcore的玻璃。 SAP的排列满足：Rsc = dSAP / Dsc，其中Dsc是SAP中心到核心中心距离，dSAP是平均SAP直径，dα= |αSAP-αcore|，其中Rsc和dα可能足够大 以引起应力双折射到芯中并提供偏振输出。 一部分光纤被掺杂的有源光纤可以实现用于光纤激光器，光纤放大器和/或光脉冲压缩机中。

    APPARATUS FOR GENERATING HIGH CONTRAST OPTICAL SIGNALS, AND EXEMPLARY APPLICATIONS
    83.
    发明申请
    APPARATUS FOR GENERATING HIGH CONTRAST OPTICAL SIGNALS, AND EXEMPLARY APPLICATIONS 审中-公开
    用于生成高对比度光信号的装置和示例性应用

    公开(公告)号：US20160207465A1

    公开(公告)日：2016-07-21

    申请号：US15083710

    申请日：2016-03-29

    Applicant: IMRA AMERICA, INC.

    Inventor： Alan ARAI

    IPC: B60R1/12

    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。

    COMPACT, COHERENT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR
    86.
    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：US20160099537A1

    公开(公告)日：2016-04-07

    申请号：US14965114

    申请日：2015-12-10

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN

    IPC: H01S3/067 ,  H01S3/16 ,  B23K26/362 ,  H01S3/11

    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。

    COMPACT ULTRA-SHORT PULSE SOURCE AMPLIFIERS
    89.
    发明申请
    COMPACT ULTRA-SHORT PULSE SOURCE AMPLIFIERS 审中-公开
    紧凑型超短脉冲源放大器

    公开(公告)号：US20150311666A1

    公开(公告)日：2015-10-29

    申请号：US14571367

    申请日：2013-10-16

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN

    IPC: H01S3/11 ,  H01J49/16 ,  H01S3/067

    CPC classification number: H01S3/1106 ,  B23K26/0624 ,  H01J49/161 ,  H01S3/0057 ,  H01S3/06708 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094026 ,  H01S3/094042 ,  H01S3/094061 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/1115

    Abstract: The present invention relates to compact, low noise, ultra-short pulse sources based on fiber amplifiers, and various applications thereof. At least one implementation includes an optical amplification system having a fiber laser seed source producing seed pulses at a repetition rate corresponding to the fiber laser cavity round trip time. A nonlinear pulse transformer, comprising a fiber length greater than about 10 m, receives a seed pulse at its input and produces a spectrally broadened output pulse at its output, the output pulse having a spectral bandwidth which is more than 1.5 times a spectral bandwidth of a seed pulse. A fiber power amplifier receives and amplifies spectrally broadened output pulses. A pulse compressor is configured to temporally compress spectrally broadened pulses amplified by said power amplifier. Applications include micro-machining, ophthalmology, molecular desorption or ionization, mass-spectroscopy, and/or laser-based, biological tissue processing.

    Abstract translation: 本发明涉及基于光纤放大器的紧凑，低噪声，超短脉冲源及其各种应用。 至少一个实施方案包括具有光纤激光种子源的光放大系统，其以对应于光纤激光腔往返时间的重复频率产生种子脉冲。 包括光纤长度大于约10微米的非线性脉冲变压器在其输入处接收种子脉冲，并在其输出端产生光谱扩展的输出脉冲，其输出脉冲的光谱带宽大于光谱带宽的1.5倍 种子脉冲。 光纤功率放大器接收并放大光谱扩展的输出脉冲。 脉冲压缩器被配置为在时间上压缩由所述功率放大器放大的频谱变宽的脉冲。 应用包括微加工，眼科学，分子解吸或离子化，质谱法和/或基于激光的生物组织处理。

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