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    NOISE DETECTION, DIAGNOSTICS, AND CONTROL OF MODELOCKED LASERS
    2.
    发明申请
    NOISE DETECTION, DIAGNOSTICS, AND CONTROL OF MODELOCKED LASERS 审中-公开
    噪声检测，诊断和模拟激光器的控制

    公开(公告)号：US20150030045A1

    公开(公告)日：2015-01-29

    申请号：US14484699

    申请日：2014-09-12

    Applicant: IMRA AMERICA, INC.

    Inventor： Ingmar HARTL ,  Christian MOHR

    IPC: H01S3/11

    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相对于噪声带宽中功率的功率的信号。 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
    6.
    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：US20150380892A1

    公开(公告)日：2015-12-31

    申请号：US14847139

    申请日：2015-09-08

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin FERMANN ,  Ingmar HARTL ,  Axel RUEHL

    IPC: H01S3/11 ,  G01J3/10 ,  H01S3/067

    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。

    BROADBAND GENERATION OF MID IR, COHERENT CONTINUA WITH OPTICAL FIBERS
    7.
    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：US20150160532A1

    公开(公告)日：2015-06-11

    申请号：US14596593

    申请日：2015-01-14

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN ,  Ingmar HARTL

    IPC: G02F1/365 ,  H01S3/10

    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。

    OPTICAL FREQUENCY RULER
    9.
    发明申请
    OPTICAL FREQUENCY RULER 审中-公开
    光学频率规则

    公开(公告)号：US20130293946A1

    公开(公告)日：2013-11-07

    申请号：US13873869

    申请日：2013-04-30

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN ,  Ingmar HARTL

    IPC: G02F1/39

    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，双谐振，非简并OPO（DNOPO），超连续谱产生（SC）级和布置在Tm纤维基泵浦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。

    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS
    10.
    发明申请
    OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS 失效
    基于双脉冲激光系统的光学扫描和成像系统

    公开(公告)号：US20130148128A1

    公开(公告)日：2013-06-13

    申请号：US13754491

    申请日：2013-01-30

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN ,  Ingmar HARTL

    IPC: H01S3/13 ,  G01B9/02

    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 δfr 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频率进行操作，使得与振荡器的重复频率的值fr1和fr2相比，重复率中的差分差小。 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。

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