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1. 发明申请

WO2004109869A3 IN-LINE, HIGH ENERGY FIBER CHIRPED PULSE AMPLIFICATION SYSTEM 审中-公开
公开(公告)号：WO2004109869A3
公开(公告)日：2004-12-16
申请号：PCT/US2004/014526
申请日：2004-05-24
申请人： IMRA AMERICA, INC. , FERMANN, Martin, E. , IMESHEV, Gennady , HARTL, Ingmar , HARTER, Donald, J.
发明人： FERMANN, Martin, E. , IMESHEV, Gennady , HARTL, Ingmar , HARTER, Donald, J.
IPC分类号： H01S3/00
摘要： By writing non-linear chirp into fiber Bragg gratings, greater control over dispersion compensation in CPA systems is obtained, such that, for example, the dispersion profile of the fiber Bragg grating and a bulk compressor may be matched. An iterative method of writing the fiber grating can reduce the group delay ripple to very low levels; and adaptive control of the fiber grating dispersion profile can further reduce these levels, while in addition offering greater acceptable yield in the manufacture of such gratings. Fiber Bragg gratings may be designed so as to provide customized pulse shapes optimized for various end uses, such as micromachining, for example, and may also be used to counteract gain-narrowing in a downstream amplifier.

2. 发明申请

WO2005022705A2 HIGH ENERGY OPTICAL FIBER AMPLIFIER FOR PICOSECOND-NANOSECOND PULSES FOR ADVANCED MATERIAL PROCESSING APPLICATIONS 审中-公开
标题翻译：用于高级材料加工应用的PICOSECOND-NANOSECOND脉冲的高能量光纤放大器
公开(公告)号：WO2005022705A2
公开(公告)日：2005-03-10
申请号：PCT/US2004/027808
申请日：2004-08-27
申请人： IMRA AMERICA, INC. , FERMANN, Martin, E. , HARTL, Ingmar , IMESHEV, Gennady , PATEL, Rajesh, S.
发明人： FERMANN, Martin, E. , HARTL, Ingmar , IMESHEV, Gennady , PATEL, Rajesh, S.
IPC分类号： H01S
CPC分类号： G02F1/39 , B23K26/0622 , B23K26/0624 , G02F2001/3548 , G02F2001/392 , H01S3/0057 , H01S3/0604 , H01S3/06704 , H01S3/06725 , H01S3/06741 , H01S3/06758 , H01S3/08045 , H01S3/094007 , H01S3/115 , H01S3/2325 , H01S2301/03
摘要： A fiber-based source for high-energy picosecond and nanosecond pulses is described. By minimizing nonlinear energy limitations in fiber amplifiers, pulse energies close to the damage threshold of optical fibers can be generated. The implementation of optimized seed sources in conjunction with amplifier chains comprising at least one nonlinear fiber amplifier allows for the generation of near bandwidth-limited high-energy picosecond pulses. Optimized seed sources for high-energy pulsed fiber amplifiers comprise semiconductor lasers as well as stretched mode locked fiber lasers. The maximization of the pulse energies obtainable from fiber amplifiers further allows for the generation of high-energy ultraviolet and IR pulses at high repetition rates.
摘要翻译：描述了用于高能皮秒和纳秒脉冲的基于光纤的源。通过最小化光纤放大器中的非线性能量限制，可以产生接近光纤损伤阈值的脉冲能量。结合包括至少一个非线性光纤放大器的放大器链实现优化的种子源允许产生近带宽限制的高能皮秒脉冲。用于高能脉冲光纤放大器的优化种子源包括半导体激光器以及拉伸模式锁定光纤激光器。从光纤放大器获得的脉冲能量的最大化进一步允许以高重复率产生高能量的紫外和IR脉冲。

3. 发明申请

WO2006042312A2 UTILIZATION OF YB: AND ND: MODE-LOCKED OSCILLATORS IN SOLID-STATE SHORT PULSE LASER SYSTEMS 审中-公开
标题翻译： YB：和ND的使用：固态短脉冲激光系统中的模式锁定振荡器
公开(公告)号：WO2006042312A2
公开(公告)日：2006-04-20
申请号：PCT/US2005/036879
申请日：2005-10-12
申请人： IMRA AMERICA, INC. , HARTER, Donald, J. , CHO, Gyu, C. , FERMANN, Martin, E. , HARTL, Ingmar
发明人： HARTER, Donald, J. , CHO, Gyu, C. , FERMANN, Martin, E. , HARTL, Ingmar
IPC分类号： H01S3/10 , H01S3/30
CPC分类号： H01S5/5045 , H01S3/005 , H01S3/0057 , H01S3/0078 , H01S3/0085 , H01S3/067 , H01S3/0675 , H01S3/06754 , H01S3/094042 , H01S3/10023 , H01S3/109 , H01S3/1616 , H01S3/1618 , H01S3/1643 , H01S3/235
摘要： An optimized Yb: doped fiber mode-locked oscillator and fiber amplifier system for seeding Nd: or Yb: doped regenerative amplifiers. The pulses are generated in the Yb: or Nd: doped fiber mode-locked oscillator, and may undergo spectral narrowing or broadening, wavelength converting, temporal pulse compression or stretching, pulse attenuation and/or lowering the repetition rate of the pulse train. The conditioned pulses are subsequently coupled into an Yb: or Nd: fiber amplifier. The amplified pulses are stretched before amplification in the regenerative amplifier that is based on an Nd: or Yb: doped solid-state laser material, and then recompressed for output.
摘要翻译：一种优化的Yb：掺杂光纤锁模振荡器和光纤放大器系统，用于种子Nd：或Yb：掺杂再生放大器。脉冲在Yb或Nd：掺杂光纤锁模振荡器中产生，并可能经历频谱变窄或变宽，波长转换，时间脉冲压缩或拉伸，脉冲衰减和/或降低脉冲序列的重复率。调节脉冲随后耦合到Yb或Nd：光纤放大器中。在基于Nd：或Yb：掺杂的固态激光材料的再生放大器中，放大后的放大脉冲被拉伸，然后再压缩输出。

4. 发明申请

WO2013078215A1 A COMPACT COHERENT HIGH BRIGHTNESS LIGHT SOURCE FOR THE MID-IR AND FAR-IR 审中-公开
标题翻译：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
申请人： IMRA AMERICA INC. , FERMANN, Martin E. , BETHGE, Jens , HARTL, Ingmar
发明人： FERMANN, Martin E. , BETHGE, Jens , HARTL, Ingmar
IPC分类号： H01S3/13
CPC分类号： H01S3/0092 , G02B6/02038 , G02F1/3534 , G02F1/365 , G02F2001/3528 , H01S3/067 , H01S3/06725 , H01S3/094046 , H01S3/109 , H01S3/1106 , H01S3/30 , H01S3/302
摘要： 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.
摘要翻译：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。

5. 发明申请

WO2010101690A1 OPTICAL SCANNING AND IMAGING SYSTEMS BASED ON DUAL PULSED LASER SYSTEMS 审中-公开
标题翻译：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
申请人： IMRA AMERICA, INC. , FERMANN, Martin, E. , HARTL, Ingmar
发明人： FERMANN, Martin, E. , HARTL, Ingmar
IPC分类号： H01S3/23
CPC分类号： 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
摘要： 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.
摘要翻译：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。

6. 发明申请

WO2005101705A2 METHOD AND APPARATUS FOR CONTROLLING AND PROTECTING PULSED HIGH POWER FIBER AMPLIFIER SYSTEMS 审中-公开
标题翻译：用于控制和保护脉冲高功率光纤放大器系统的方法和装置
公开(公告)号：WO2005101705A2
公开(公告)日：2005-10-27
申请号：PCT/US2005/008625
申请日：2005-03-14
申请人： IMRA AMERICA, INC. , NATI, Salvatore, F. , ULRICH, Otho, E. , CHO, Gyu Choen , GILLIS, Wayne, A. , HARTER, Donald, J. , BENDETT, Mark , HARTL, Ingmar
发明人： NATI, Salvatore, F. , ULRICH, Otho, E. , CHO, Gyu Choen , GILLIS, Wayne, A. , HARTER, Donald, J. , BENDETT, Mark , HARTL, Ingmar
IPC分类号： H04B10/12
CPC分类号： H01S3/06779 , H01S3/06758 , H01S3/0941 , H01S3/10015 , H01S3/1003 , H01S3/10038 , H01S3/10046 , H01S3/105 , H01S3/1112 , H01S3/1305 , H01S3/1312 , H01S3/1394
摘要： An electronic circuit for controlling a laser system consisting of a pulse source and high power fiber amplifier is disclosed. The circuit is used to control the gain of the high power fiber amplifier system so that the amplified output pulses have predetermined pulse energy as the pulse width and repetition rate of the oscillator are varied. This includes keeping the pulse energy constant when the pulse train is turned on. The circuitry is also used to control the temperature of the high power fiber amplifier pump diode such that the wavelength of the pump diode is held at the optimum absorption wavelength of the fiber amplifier as the diode current is varied. The circuitry also provides a means of protecting the high power fiber amplifier from damage due to a loss of signal from the pulse source or from a pulse-source signal of insufficient injection energy.
摘要翻译：公开了一种用于控制由脉冲源和大功率光纤放大器组成的激光系统的电子电路。该电路用于控制高功率光纤放大器系统的增益，使得放大的输出脉冲具有预定的脉冲能量，因为振荡器的脉冲宽度和重复率是变化的。这包括当脉冲串打开时保持脉冲能量恒定。该电路还用于控制高功率光纤放大器泵浦二极管的温度，使得当二极管电流变化时，泵浦二极管的波长保持在光纤放大器的最佳吸收波长。电路还提供了保护大功率光纤放大器免受来自脉冲源的信号损失或者注入能量不足的脉冲源信号的损害的一种手段。

7. 发明申请

WO2012166572A1 COMPACT OPTICAL FREQUENCY COMB SYSTEMS 审中-公开
标题翻译：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
申请人： IMRA AMERICA, INC. , REGENTS OF THE UNIVERSITY OF COLORADO , FERMANN, Martin E. , SCHIBLI, Thomas R. , HARTL, Ingmar
发明人： FERMANN, Martin E. , SCHIBLI, Thomas R. , HARTL, Ingmar
IPC分类号： H01S3/098
CPC分类号： H01S3/1115 , H01S3/0092 , H01S3/06712 , H01S3/06725 , H01S3/08059 , H01S3/10046 , H01S3/105 , H01S3/1053 , H01S3/1118 , H01S3/1616 , H01S3/176
摘要： 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.
摘要翻译：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。

8. 发明申请

WO2009100113A1 HIGH POWER PARALLEL FIBER ARRAYS 审中-公开
标题翻译：高功率平行纤维阵列
公开(公告)号：WO2009100113A1
公开(公告)日：2009-08-13
申请号：PCT/US2009/033051
申请日：2009-02-04
申请人： IMRA AMERICA, INC. , FERMANN, Martin, E. , HARTL, Ingmar , MARCINKEVICIUS, Andrius , DONG, Liang
发明人： FERMANN, Martin, E. , HARTL, Ingmar , MARCINKEVICIUS, Andrius , DONG, Liang
IPC分类号： H01S3/063
CPC分类号： H01S3/06737 , G02B6/02042 , H01S3/0057 , H01S3/0085 , H01S3/06704 , H01S3/06712 , H01S3/06729 , H01S3/06741 , H01S3/06745 , H01S3/06754 , H01S3/08059 , H01S3/094007 , H01S3/094019 , H01S3/094053 , H01S3/094076 , H01S3/10084 , H01S3/1305 , H01S3/1307 , H01S3/2333 , H01S3/2383
摘要： High power parallel fiber arrays for the amplification of high peak power pulses are described. Fiber arrays based on individual fiber amplifiers as well as fiber arrays based on multi-core fibers can be implemented. The optical phase between the individual fiber amplifier elements of the fiber array is measured and controlled using a variety of phase detection and compensation techniques. High power fiber array amplifiers can be used for EUV and X-ray generation as well as pumping of parametric amplifiers.
摘要翻译：描述了用于放大高峰值功率脉冲的大功率并行光纤阵列。可以实现基于单个光纤放大器的光纤阵列以及基于多芯光纤的光纤阵列。使用各种相位检测和补偿技术来测量和控制光纤阵列的各个光纤放大器元件之间的光学相位。大功率光纤阵列放大器可用于EUV和X射线产生以及泵浦参数放大器。

9. 发明申请

WO2011041472A1 OPTICAL SIGNAL PROCESSING WITH MODELOCKED LASERS 审中-公开
标题翻译：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
申请人： IMRA AMERICA, INC. , FERMANN, Martin E. , HARTL, Ingmar , RUEHL, Axel
发明人： FERMANN, Martin E. , HARTL, Ingmar , RUEHL, Axel
IPC分类号： H01S3/00
CPC分类号： 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
摘要： 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.
摘要翻译：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。

10. 发明申请

WO2012074623A1 FREQUENCY COMB SOURCE WITH LARGE COMB SPACING 审中-公开
标题翻译：频率合成源与大型COMB间距
公开(公告)号：WO2012074623A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/057567
申请日：2011-10-25
申请人： IMRA AMERICA, INC. , FERMANN, Martin , HARTL, Ingmar
发明人： FERMANN, Martin , HARTL, Ingmar
IPC分类号： H01S3/098
CPC分类号： G02F1/365 , G01J3/10 , G02F2001/3528 , H01S3/0085 , H01S3/0092 , H01S3/0675 , H01S3/08054 , H01S3/0809 , H01S3/10046 , H01S3/105 , H01S3/1106 , H01S3/1112 , H01S3/1115 , H01S3/1118 , H01S3/1618
摘要： A frequency comb laser providing large comb spacing is disclosed. At least one embodiment includes a mode locked waveguide laser system. The mode locked waveguide laser includes a laser cavity having a waveguide, and a dispersion control unit (DCU) in the cavity. The DCU imparts an angular dispersion, group-velocity dispersion (GVD) and a spatial chirp to a beam propagating in the cavity. The DCU is capable of producing net GVD in a range from a positive value to a negative value. In some embodiments a tunable fiber frequency comb system configured as an optical frequency synthesizer is provided. In at least one embodiment a low phase noise micro-wave source may be implemented with a fiber comb laser having a comb spacing greater than about 1 GHz. The laser system is suitable for mass-producible fiber comb sources with large comb spacing and low noise. Applications include high-resolution spectroscopy.
摘要翻译：公开了一种提供较大梳形间距的频率梳状激光器。至少一个实施例包括模式锁定波导激光系统。模式锁定波导激光器包括具有波导的激光腔和空腔中的色散控制单元（DCU）。 DCU向在腔中传播的光束赋予角度色散，群速度色散（GVD）和空间啁啾声。 DCU能够在从正值到负值的范围内产生净GVD。在一些实施例中，提供了被配置为光频合成器的可调光纤频率梳状系统。在至少一个实施例中，低相位噪声微波源可以用具有大于约1GHz的梳齿间隔的光纤梳状激光器来实现。激光系统适用于具有大梳齿间隔和低噪音的大规模生产的光纤梳状光源。应用包括高分辨率光谱。

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