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公开(公告)号：US20170271838A9
公开(公告)日：2017-09-21
申请号：US13958703
申请日：2013-08-05
Applicant: IMRA AMERICA, INC.
Inventor： Martin E. FERMANN
IPC: H01S3/11
CPC classification number: H01S3/1115 , H01S3/0057 , H01S3/0675 , H01S3/06754 , H01S3/094019 , H01S3/094042 , H01S3/109 , H01S3/1112 , H01S3/1616 , H01S3/1618 , H01S3/302
Abstract: A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Peak power handling capability of fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. Dispersive pulse stretching in the presence of self-phase modulation and gain results in the formation of high-power parabolic pulses. To ensure a wide tunability of the whole system, Raman-shifting of the compact sources of ultrashort pulses in conjunction with frequency-conversion in nonlinear optical crystals can be implemented, or an Anti-Stokes fiber in conjunction with fiber amplifiers and Raman-shifters are used. Positive dispersion optical amplifiers are used to improve transmission characteristics. An optical communication system utilizes a Raman amplifier fiber pumped by a train of Raman-shifted, wavelength-tunable pump pulses, to thereby amplify an optical signal which counterpropagates within the Raman amplifier fiber with respect to the pump pulses.
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12.发明申请公开(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
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。
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公开(公告)号：US20140036939A1
公开(公告)日：2014-02-06
申请号：US13958703
申请日：2013-08-05
Applicant: IMRA AMERICA, INC.
Inventor： Martin E. FERMANN
IPC: H01S3/11
CPC classification number: H01S3/1115 , H01S3/0057 , H01S3/0675 , H01S3/06754 , H01S3/094019 , H01S3/094042 , H01S3/109 , H01S3/1112 , H01S3/1616 , H01S3/1618 , H01S3/302
Abstract: A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Peak power handling capability of fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. Dispersive pulse stretching in the presence of self-phase modulation and gain results in the formation of high-power parabolic pulses. To ensure a wide tunability of the whole system, Raman-shifting of the compact sources of ultrashort pulses in conjunction with frequency-conversion in nonlinear optical crystals can be implemented, or an Anti-Stokes fiber in conjunction with fiber amplifiers and Raman-shifters are used. Positive dispersion optical amplifiers are used to improve transmission characteristics. An optical communication system utilizes a Raman amplifier fiber pumped by a train of Raman-shifted, wavelength-tunable pump pulses, to thereby amplify an optical signal which counterpropagates within the Raman amplifier fiber with respect to the pump pulses.
Abstract translation: 一种模块化，紧凑且广泛可调的激光系统，用于高效生成高峰值和高平均功率超短脉冲。 通过使用优化的脉冲形状以及分散加宽的脉冲来扩展光纤放大器的峰值功率处理能力。 在存在自相位调制和增益的情况下的分散脉冲拉伸导致高功率抛物线脉冲的形成。 为了确保整个系统的广泛可调性，可以实现超短脉冲的紧凑型源与非线性光学晶体中的频率转换的拉曼移位，或者与光纤放大器和拉曼移位器结合的反斯托克斯光纤是 用过的。 正色散光放大器用于提高传输特性。 光通信系统利用由一系列拉曼移位的波长可调泵浦脉冲泵浦的拉曼放大器光纤，从而放大相对于泵浦脉冲在拉曼放大器光纤内反向传播的光信号。
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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。
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Patent Agency Ranking
15.发明申请公开(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
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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16.发明申请公开(公告)号：US20170179676A1
公开(公告)日：2017-06-22
申请号：US15439062
申请日：2017-02-22
Applicant: IMRA AMERICA, INC.
Inventor： Donald J. HARTER , Gyu C. CHO , Zhenlin LIU , Martin E. FERMANN , Xinhua GU , Salvatore F. NATI , Lawrence SHAH , Ingmar HARTL , Mark BENDETT
IPC: H01S3/11 , H01S3/0941 , H01S3/094 , H01S3/108 , H01S3/23 , H01S3/109 , H01S3/00 , H01S3/13 , H01S3/067 , H01S3/16
CPC classification number: H01S3/1106 , H01S3/005 , H01S3/0057 , H01S3/0064 , H01S3/0085 , H01S3/0092 , H01S3/06712 , H01S3/06725 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094019 , H01S3/094042 , H01S3/094076 , H01S3/09415 , H01S3/1086 , H01S3/109 , H01S3/11 , H01S3/1118 , H01S3/1305 , H01S3/1611 , H01S3/1618 , H01S3/1643 , H01S3/235
Abstract: The invention describes classes of robust fiber laser systems usable as pulse sources for Nd: or Yb: based regenerative amplifiers intended for industrial settings. The invention modifies adapts and incorporates several recent advances in FCPA systems to use as the input source for this new class of regenerative amplifier.
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17.发明申请公开(公告)号：US20160094008A1
公开(公告)日：2016-03-31
申请号：US14964779
申请日：2015-12-10
Applicant: IMRA AMERICA, INC.
Inventor： Martin E. FERMANN , Ingmar HARTL
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δfr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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公开(公告)号：US20140264031A1
公开(公告)日：2014-09-18
申请号：US14178985
申请日：2014-02-12
Applicant: IMRA AMERICA, INC.
Inventor： Martin E. FERMANN , Kevin F. Lee , Andrew A. Mills
Abstract: The present invention relates to a trace gas detection system. At least one embodiment includes a frequency spectrum comprising a 1st comb and an enhancement cavity characterized by having a 2nd 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, fd. The dither mechanism, in conjunction with a feedback mechanism, stabilizes the location of said 1st comb lines with respect to the resonances of said 2nd comb over a time scale much greater than a dither period, Td=1/fd. 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。
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19.发明申请公开(公告)号：US20140219298A1
公开(公告)日：2014-08-07
申请号：US14247828
申请日：2014-04-08
Applicant: IMRA AMERICA, INC.
Inventor： Martin E. FERMANN , Ingmar HARTL
IPC: H01S3/10
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δfr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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