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    A COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR-IR
    2.
    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。

    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS
    3.
    发明申请
    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS 审中-公开
    基于双脉冲激光系统的光学扫描和成像系统

    公开(公告)号：WO2010101690A1

    公开(公告)日：2010-09-10

    申请号：PCT/US2010/023123

    申请日：2010-02-04

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

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

    IPC: H01S3/23

    CPC classification number: H01S3/10046 ,  G01B9/02001 ,  G01N21/31 ,  G01N2021/317 ,  G02B6/02304 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/08054 ,  H01S3/1067 ,  H01S3/1068 ,  H01S3/11 ,  H01S3/1115 ,  H01S3/13 ,  H01S3/1307 ,  H01S3/1392 ,  H01S3/1394 ,  H01S3/2383

    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, including highly integrated configurations. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. The oscillators are configured to operate at slightly different repetition rates, such that a difference fr in repetition rates is small compared to the values fr1 and fr2 of the repetition rates of the oscillators. The CDSL system also includes a non-linear frequency conversion section optically connected to each oscillator. The section includes a non-linear optical element generating a frequency converted spectral output having a spectral bandwidth and a frequency comb comprising harmonics of the oscillator repetition rates. A CDSL 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，包括高度集成的配置。 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。 振荡器被配置为以稍微不同的重复率操作，使得与振荡器的重复率的值fr1和fr2相比，重复率的差fr小。 CDSL系统还包括与每个振荡器光学连接的非线性频率转换部分。 该部分包括产生具有频谱带宽的频率转换频谱输出和包括振荡器重复频率的谐波的频率梳的非线性光学元件。 可以在成像系统中布置CDSL以用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种。

    COMPACT OPTICAL FREQUENCY COMB SYSTEMS
    4.
    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。

    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS
    5.
    发明申请
    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS 审中-公开
    中等红外，宽带连续光纤光纤的宽带产生

    公开(公告)号：WO2012125391A1

    公开(公告)日：2012-09-20

    申请号：PCT/US2012/028196

    申请日：2012-03-08

    Applicant: IMRA AMERICA, INC. ,  FERNANN, Martin E. ,  HARTL, Ingmar

    Inventor： FERNANN, 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.

    Abstract translation: 中红外光谱方案的相干紧凑超连续光源被公开及其示例性应用。 超连续谱生成是基于使用高度非线性的光纤或波导。 在至少一个实施例中，使用低噪声模式锁定短脉冲源来增加超连续谱源的相干性。 紧凑型超连续光源可以采用被动锁模光纤或二极管激光器构成。 可以使用适当的光学滤波器或变频部分来构建波长可调谐源。 高度一致的超连续谱源可进一步促进相干检测方案，并可以在锁定检测方案中提高信噪比。

    PULSED LASER SOURCES
    7.
    发明申请
    PULSED LASER SOURCES 审中-公开
    脉冲激光源

    公开(公告)号：WO2005048417A2

    公开(公告)日：2005-05-26

    申请号：PCT/US2004/038652

    申请日：2004-11-10

    Applicant: IMRA AMERICA, INC.

    Inventor： FERMANN, Martin, E. ,  HARTL, Ingmar ,  IMESHEV, Gennady ,  HARTER, Donald, J.

    IPC: H01S

    CPC classification number: H01S3/0057 ,  G02F1/3517 ,  G02F2001/3528 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/10 ,  H01S3/105 ,  H01S3/1053 ,  H01S3/106 ,  H01S3/1067 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/1118 ,  H01S3/1616

    Abstract: Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain embodiments exclude such an isolator. A reflective optical element on one end of the resonator having a relatively low reflectivity may be employed to couple light from the laser resonator to the amplifier. Enhanced pulse-width control may be provided with concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers may be also be included in the laser cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth may be obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber. Frequency comb sources may be constructed from such modelocked fiber oscillators. In various exemplary embodiments, low dispersion and an in-line interferometer that provides feedback, assist in controlling the frequency components output from the comb source.

    Abstract translation: 各种实施例包括可与光放大器耦合的锁模光纤激光谐振器。 隔离器可以将激光谐振器与放大器分离，尽管某些实施例不包括这种隔离器。 可以使用具有相对较低反射率的谐振器的一端上的反射光学元件将来自激光谐振器的光耦合到放大器。 可以提供增强的脉冲宽度控制，其具有两个偏振保持和非偏振保持光纤的级联部分。 变形光纤布拉格光栅和集成光纤偏振器也可以被包括在激光腔中，以帮助线性偏振空腔的输出。 可以通过将光纤布拉格光栅的色散值与腔内光纤的色散相反来获得具有大光学带宽的非常短的脉冲。 频率梳源可以由这种锁模光纤振荡器构成。 在各种示例性实施例中，提供反馈的低色散和在线干涉仪有助于控制从梳状源输出的频率分量。

    NOISE DETECTION, DIAGNOSTICS, AND CONTROL OF MODE-LOCKED LASERS
    8.
    发明申请
    NOISE DETECTION, DIAGNOSTICS, AND CONTROL OF MODE-LOCKED LASERS 审中-公开
    噪声检测，诊断和模式锁定激光器的控制

    公开(公告)号：WO2014120292A1

    公开(公告)日：2014-08-07

    申请号：PCT/US2013/065448

    申请日：2013-10-17

    Applicant: IMRA AMERICA, INC.

    Inventor： HARTL, Ingmar ,  MOHR, Christian

    IPC: H01S3/10

    CPC classification number: H01S3/1106 ,  H01S3/06754 ,  H01S3/1121 ,  H01S3/1305 ,  H01S3/1306 ,  H01S3/1312 ,  H01S3/136 ,  H01S5/065 ,  H01S5/0657 ,  H01S5/06817 ,  H01S5/06835 ,  H01S5/0687 ,  H01S2301/02

    Abstract: The present invention features a laser based system configured with a noise detection unit. The system includes a mode-locked oscillator. A noise detection unit includes at least one optical detector that monitors optical pulses generated by the mode-locked oscillator and produces an electrical signal in response to the optical pulses. The noise detection unit includes a first filter to transmit signal power over a signal bandwidth which includes the mode-locked laser repetition frequency, frep. The noise detection unit may include one or more filters to transmit power over a noise bandwidth that substantially excludes repetition frequency, frep. Non-linear signal processing equipment is utilized to generate one or more signals representative of the power in the signal bandwidth relative to the power in the noise bandwidth. The system includes a controller operable to generate a signal for controlling the laser based system based on the relative power.

    Abstract translation: 本发明的特征在于具有噪声检测单元的基于激光的系统。 该系统包括锁模振荡器。 噪声检测单元包括至少一个光检测器，其监测由锁模振荡器产生的光脉冲，并响应于光脉冲产生电信号。 噪声检测单元包括用于在包括锁模激光重复频率frep的信号带宽上传输信号功率的第一滤波器。 噪声检测单元可以包括一个或多个滤波器，以在基本上排除重复频率frep的噪声带宽上传输功率。 利用非线性信号处理设备产生一个或多个表示信号带宽中功率相对于噪声带宽中功率的信号。 该系统包括可操作以基于相对功率产生用于控制基于激光的系统的信号的控制器。

    OPTICAL SIGNAL PROCESSING WITH MODELOCKED LASERS
    9.
    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。

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