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    COMPACT OPTICAL FREQUENCY COMB SYSTEMS
    1.
    发明申请
    COMPACT OPTICAL FREQUENCY COMB SYSTEMS 审中-公开
    紧凑的光学频率系统

    公开(公告)号：WO2012166572A1

    公开(公告)日：2012-12-06

    申请号：PCT/US2012/039509

    申请日：2012-05-25

    Applicant: IMRA AMERICA, INC. ,  REGENTS OF THE UNIVERSITY OF COLORADO ,  FERMANN, Martin E. ,  SCHIBLI, Thomas R. ,  HARTL, Ingmar

    Inventor： FERMANN, Martin E. ,  SCHIBLI, Thomas R. ,  HARTL, Ingmar

    IPC: H01S3/098

    CPC classification number: H01S3/1115 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/08059 ,  H01S3/10046 ,  H01S3/105 ,  H01S3/1053 ,  H01S3/1118 ,  H01S3/1616 ,  H01S3/176

    Abstract: Compact optical frequency sources are described. The comb source may include an intra-cavity optical element having a multi-material integrated structure with an electrically controllable active region. The active region may comprise a thin film. By way of example, the thin film and an insulating dielectric material disposed between two electrodes can provide for rapid loss modulation. In some embodiments the thin film may comprise graphene. In various embodiments of a frequency comb laser, rapid modulation of the CEO frequency can be implemented via electric modulation of the transmission or reflection loss of an additional optical element, which can be the saturable absorber itself. In another embodiment, the thin film can also be used as a saturable absorber in order to facilitate passive modelocking. In some implementations the optical element may be formed on a cleaved or polished end of an optical fiber.

    Abstract translation: 描述了紧凑的光频源。 梳状光源可以包括具有电子可控有源区域的多材料集成结构的腔内光学元件。 有源区可以包括薄膜。 作为示例，设置在两个电极之间的薄膜和绝缘介电材料可以提供快速损耗调制。 在一些实施例中，薄膜可以包括石墨烯。 在频率梳状激光器的各种实施例中，CEO频率的快速调制可以通过附加光学元件的传输或反射损耗的电调制来实现，其可以是可饱和吸收体本身。 在另一个实施例中，薄膜也可以用作可饱和吸收体，以便于被动锁模。 在一些实施方式中，光学元件可以形成在光纤的切割或抛光端上。

    OPTICAL FREQUENCY RULER
    2.
    发明申请
    OPTICAL FREQUENCY RULER 审中-公开
    光学频率规则

    公开(公告)号：WO2013165945A1

    公开(公告)日：2013-11-07

    申请号：PCT/US2013/038752

    申请日：2013-04-30

    Applicant: IMRA AMERICA, INC.

    Inventor： FERMANN, Martin E. ,  HARTL, Ingmar

    IPC: H01S3/05 ,  H01S3/098 ,  H01S3/10

    CPC classification number: G02F1/39 ,  H01S3/0092 ,  H01S3/2308 ,  H01S3/2383

    Abstract: The present invention relates to frequency rulers. At least one embodiment includes a mode locked pump source operated at pulse repetition rate, and a pump output having a pump carrier envelope offset frequency. A nonlinear optical system outputs a frequency ruler spectrum comprising individual frequency modes. The frequency modes may be characterized by a frequency spacing which is an integer multiple of the repetition rate and by distinct ruler carrier envelope offset frequencies which exhibit at least one discontinuity across the frequency output. The ruler carrier envelope offset frequencies are substantially locked to the carrier envelope offset frequency of the pump laser. One preferred embodiment includes a frequency doubled, doubly resonant, non-degenerate OPO (DNOPO), a supercontinuum generation (SC) stage and at least one reference laser arranged downstream from a Tm fiber-based pump source. A plurality of beat signals generated therefrom provide for stabilization of the system.

    Abstract translation: 本发明涉及频率标尺。 至少一个实施例包括以脉冲重复率操作的模式锁定泵浦源，以及具有泵载波包络偏移频率的泵输出。 非线性光学系统输出包括各种频率模式​​的频率标尺。 频率模式的特征在于频率间隔是重复率的整数倍，并且通过不同的标尺载波包络偏移频率来表征，该频率间隔在频率输出端表现出至少一个不连续性。 标尺载波包络偏移频率基本上锁定在泵浦激光器的载波包络偏移频率上。 一个优选实施例包括频率倍增，双重谐振，非简并OPO（DNOPO），超连续谱产生（SC）级以及布置在基于Tm纤维的泵浦源的下游的至少一个参考激光器。 由此产生的多个拍子信号提供了系统的稳定性。

    TRACE GAS DETECTION SYSTEM
    3.
    发明申请
    TRACE GAS DETECTION SYSTEM 审中-公开
    跟踪气体检测系统

    公开(公告)号：WO2014149255A1

    公开(公告)日：2014-09-25

    申请号：PCT/US2014/016010

    申请日：2014-02-12

    Applicant: IMRA AMERICA, INC.

    Inventor： FERMANN, Martin E. ,  LEE, Kevin F. ,  MILLS, Andrew A.

    IPC: H01S3/10 ,  H01S3/13 ,  H01S3/098

    CPC classification number: G01J3/42 ,  A61B5/082 ,  A61B5/097 ,  G01J3/453

    Abstract: The present invention relates to a trace gas detection system. At least one embodiment includes a frequency spectrum comprising a 1 st comb and an enhancement cavity characterized by having a 2 nd comb of spectral resonances. The enhancement cavity contains a sample gas for spectroscopic measurement. A dither mechanism is configured to modulate the relative spectral position between the combs at a dither frequency, f d . The dither mechanism, in conjunction with a feedback mechanism, stabilizes the location of said 1st comb lines with respect to the resonances of said 2 nd comb over a time scale much greater than a dither period, T d = 1/f d . A time- averaged output from the enhancement cavity is provided to a spectroscopic measurement tool, for example a Fourier transform spectrometer. The system is capable of detecting volatile organic compounds, endogenous compounds, and may be configured for cancer detection.

    Abstract translation: 痕量气体检测系统技术领域本发明涉及痕量气体检测系统。 至少一个实施例包括包括第一梳状物和增强腔体的频谱，其特征在于具有第二梳状光谱谐振。 增强腔包含用于光谱测量的样品气体。 抖动机构被配置为以抖动频率fd调制梳之间的相对光谱位置。 抖动机构结合反馈机制，稳定了所述第一梳状线相对于所述第二梳状体的谐振在比抖动周期Td = 1 / fd大得多的时间尺度上的位置。 来自增强腔的时间平均输出被提供给光谱测量工具，例如傅里叶变换光谱仪。 该系统能够检测挥发性有机化合物，内源性化合物，并可配置用于癌症检测。

    A COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR-IR
    4.
    发明申请
    A COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR-IR 审中-公开
    一个紧凑的高亮度光源，用于中红外和红外

    公开(公告)号：WO2013078215A1

    公开(公告)日：2013-05-30

    申请号：PCT/US2012/066083

    申请日：2012-11-20

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

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

    IPC: H01S3/13

    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, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR
    6.
    发明申请
    COMPACT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR 审中-公开
    紧凑，高亮度的中等和远红外光源

    公开(公告)号：WO2012087710A1

    公开(公告)日：2012-06-28

    申请号：PCT/US2011/064908

    申请日：2011-12-14

    Applicant: IMRA AMERICA, INC. ,  THE TRUSTEES OF LELAND STANFORD UNIVERSITY ,  FERMANN, Martin E. ,  JIANG, Jie ,  PHILLIPS, Christopher ,  FEJER, Martin M.

    Inventor： FERMANN, Martin E. ,  JIANG, Jie ,  PHILLIPS, Christopher ,  FEJER, Martin M.

    IPC: H01S3/10

    CPC classification number: G02F1/353 ,  G02F2001/3548 ,  G02F2201/02 ,  G02F2201/16 ,  G02F2203/11 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/1608 ,  H01S3/1616

    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. Some embodiments may include an infrared source with an amplifier system comprising, in combination, a Tm fiber amplifier and an Er fiber amplifier. A difference frequency generator receives outputs from the Er and/or Tm amplifier system, and generates an output comprising a difference frequency. 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。 一些实施例可以包括具有放大器系统的红外源，该放大器系统组合包括Tm光纤放大器和Er光纤放大器。 差分频率发生器接收来自Er和/或Tm放大器系统的输出，并产生包括差频的输出。 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。

    OPTICAL SIGNAL PROCESSING WITH MODELOCKED LASERS
    7.
    发明申请
    OPTICAL SIGNAL PROCESSING WITH MODELOCKED LASERS 审中-公开
    使用模拟激光的光信号处理

    公开(公告)号：WO2011041472A1

    公开(公告)日：2011-04-07

    申请号：PCT/US2010/050798

    申请日：2010-09-30

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

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

    IPC: H01S3/00

    CPC classification number: H01S3/1106 ,  G01J3/10 ,  G01J3/45 ,  G01J2003/102 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/4795 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/3595 ,  H01S3/067 ,  H01S3/105 ,  H01S3/1068 ,  H01S3/107 ,  H01S3/1115

    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. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. In some embodiments an effective CDSL is constructed with only one laser. At least one embodiment includes a coherent scanning laser system (CSL) for generating pulse pairs with a time varying time delay. A CDSL, effective CDSL, or CSL 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。 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。 在一些实施例中，仅使用一个激光器构造有效的CDSL。 至少一个实施例包括用于产生具有时变时间延迟的脉冲对的相干扫描激光系统（CSL）。 用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种的CDSL，有效的CDSL或CSL可以被布置在成像系统中。

    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS
    8.
    发明公开
    POLARIZING AND POLARIZATION MAINTAINING LEAKAGE CHANNEL FIBERS 审中-公开
    偏光功能及极化维持泄漏通道纤维

    公开(公告)号：EP3072002A1

    公开(公告)日：2016-09-28

    申请号：EP14802547.1

    申请日：2014-11-05

    Applicant: IMRA America, Inc.

    Inventor： SUZUKI, Shigeru ,  MCKAY, Hugh A ,  FERMANN, Martin E.

    IPC: G02B6/036 ,  G02B6/02 ,  G02B6/10

    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.

    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS
    9.
    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.

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