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1. 发明授权

US08571075B2 Frequency comb source with large comb spacing 有权
标题翻译：频梳梳具有较大的梳齿间距
公开(公告)号：US08571075B2
公开(公告)日：2013-10-29
申请号：US12955759
申请日：2010-11-29
申请人： Martin Fermann , Ingmar Hartl
发明人： Martin Fermann , Ingmar Hartl
IPC分类号： H01S3/30 , 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。

2. 发明授权

US08165440B2 Laser based frequency standards and their applications 有权
标题翻译：基于激光的频率标准及其应用
公开(公告)号：US08165440B2
公开(公告)日：2012-04-24
申请号：US13028249
申请日：2011-02-16
申请人： Ingmar Hartl , Martin Fermann
发明人： Ingmar Hartl , Martin Fermann
IPC分类号： G02B6/00 , G02B6/036 , G02B6/26 , G02B6/42 , H01S3/098 , H01S3/13
CPC分类号： H01S3/1112 , G02F1/3558 , G02F1/365 , G02F2001/3528 , G02F2203/56 , H01S3/067 , H01S3/06716 , H01S3/10007 , H01S2301/02
摘要： Frequency standards based on mode-locked fiber lasers, fiber amplifiers and fiber-based ultra-broad bandwidth light sources, and applications of the same.
摘要翻译：基于锁模光纤激光器，光纤放大器和基于光纤的超宽带宽光源的频率标准及其应用。

3. 发明授权

US08135048B2 Single-polarization high power fiber lasers and amplifiers 有权
标题翻译：单极化大功率光纤激光器和放大器
公开(公告)号：US08135048B2
公开(公告)日：2012-03-13
申请号：US12815588
申请日：2010-06-15
申请人： Martin Fermann , Donald J. Harter
发明人： Martin Fermann , Donald J. Harter
IPC分类号： H01S3/30
CPC分类号： H01S3/06708 , H01S3/06712 , H01S3/06729 , H01S3/094019 , H01S3/1118
摘要： A novel polarization maintaining optical fiber, which can be used as a high-power polarization maintaining fiber laser or amplifier, is described. Insensitivity of the polarization state to external fiber bending and temperature changes is accomplished by minimizing polarization mode-coupling via reducing stresses inside the fiber core via increasing the fiber diameter. Alternatively, polarization mode-coupling can be minimized by an optimization of the fiber coating to minimize stresses at the interface between the fiber and the coating. As a result insensitivity to polarization mode-coupling is obtained at greatly reduced values of birefringence compared to small-diameter fibers. The fiber is of significant use in any application where polarization stability is important, and will be useful in telecommunications applications in particular for reducing polarization mode dispersion. An implementation in a parabolic pulse-producing fiber laser is also described as one specific high power example.
摘要翻译：描述了可用作高功率偏振维持光纤激光器或放大器的新型偏振保持光纤。极化状态对外部纤维弯曲和温度变化的不敏感性是通过通过增加纤维直径来减小纤维芯内的应力来最小化偏振模耦合来实现的。或者，可以通过纤维涂层的优化来最小化极化模式耦合，以使纤维和涂层之间的界面处的应力最小化。结果，与小直径纤维相比，在双折射值大大降低的情况下获得了偏振模耦合的不敏感性。该光纤在极化稳定性很重要的任何应用中都是非常有用的，并且在电信应用中特别用于降低偏振模色散是有用的。抛物线脉冲产生光纤激光器中的实现也被描述为一个特定的高功率示例。

4. 发明申请

US20100272129A1 YB: AND ND: MODE-LOCKED OSCILLATORS AND FIBER SYSTEMS INCORPORATED IN SOLID-STATE SHORT PULSE LASER SYSTEMS 有权
标题翻译： YB：和ND：在固态短脉冲激光系统中并入的模式锁定振荡器和光纤系统
公开(公告)号：US20100272129A1
公开(公告)日：2010-10-28
申请号：US12816105
申请日：2010-06-15
申请人： Donald J. HARTER , Gyu CHO , Zhenlin LIU , Martin FERMANN , Xinhua GU , Salvatore F. NATI , Lawrence SHAH , Ingmar HARTL , Mark Bendett
发明人： Donald J. HARTER , Gyu CHO , Zhenlin LIU , Martin FERMANN , Xinhua GU , Salvatore F. NATI , Lawrence SHAH , Ingmar HARTL , Mark Bendett
IPC分类号： H01S3/067
CPC分类号： 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
摘要： 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.
摘要翻译：本发明描述了可用作用于工业设置的用于基于Nd：或Yb：的再生放大器的脉冲源的鲁棒光纤激光器系统。本发明修改了适应性，并结合了FCPA系统中的几个最新进展，用作这种新型再生放大器的输入源。

5. 发明申请

US20070103765A1 Modular, high energy, widely-tunable ultrafast fiber source 有权
公开(公告)号：US20070103765A1
公开(公告)日：2007-05-10
申请号：US11643765
申请日：2006-12-22
申请人： Martin Fermann , Almantas Galvanauskas , Donald Harter
发明人： Martin Fermann , Almantas Galvanauskas , Donald Harter
IPC分类号： H01S3/00
CPC分类号： H01S3/1115 , H01S3/0057 , H01S3/0675 , H01S3/06754 , H01S3/094019 , H01S3/094042 , H01S3/109 , H01S3/1112 , H01S3/1616 , H01S3/1618 , H01S3/302
摘要： A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable amplifier components. System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. Peak power handling capability of the fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. Dispersive broadening is introduced by dispersive pulse stretching in the presence of self-phase modulation and gain, resulting in the formation of high-power parabolic pulses. In addition, dispersive broadening is also introduced by simple fiber delay lines or chirped fiber gratings, resulting in a further increase of the energy handling ability of the fiber amplifiers. The phase of the pulses in the dispersive delay line is controlled to quartic order by the use of fibers with varying amounts of waveguide dispersion or by controlling the chirp of the fiber gratings. After amplification, the dispersively stretched pulses can be re-compressed to nearly their bandwidth limit by the implementation of another set of dispersive delay lines. 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. A particularly compact implementation of the whole system uses fiber oscillators in conjunction with fiber amplifiers. Additionally, long, distributed, positive dispersion optical amplifiers are used to improve transmission characteristics of an optical communication system. Finally, 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 counterpropogates within the Raman amplifier fiber with respect to the pump pulses.

6. 发明申请

US20060263024A1 Single mode propagation in fibers and rods with large leakage channels 有权
公开(公告)号：US20060263024A1
公开(公告)日：2006-11-23
申请号：US11134856
申请日：2005-05-20
申请人： Liang Dong , William Wong , Martin Fermann
发明人： Liang Dong , William Wong , Martin Fermann
IPC分类号： G02B6/032 , G02B6/02 , G02B6/036
CPC分类号： G02B6/02357 , G02B6/00 , G02B6/02 , G02B6/02009 , G02B6/02033 , G02B6/02361 , G02B6/02366 , G02B6/02371 , G02B6/024 , G02B6/036 , G02B6/03633 , G02B6/03694 , G02B6/24 , G02B6/26 , G02B6/262 , G02B6/32 , G02F1/0134 , H01S3/0057 , H01S3/02 , H01S3/06708 , H01S3/06729 , H01S3/06745 , H01S3/06754 , H01S3/094007 , H01S3/1618 , H01S3/2308 , H01S3/302 , H01S2302/00
摘要： Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprising cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.

7. 发明申请

US20060171018A1 Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking 失效
公开(公告)号：US20060171018A1
公开(公告)日：2006-08-03
申请号：US11372185
申请日：2006-03-10
申请人： Almantas Galvanauskas , Donald Harter , Martin Fermann , Ferenc Raksi
发明人： Almantas Galvanauskas , Donald Harter , Martin Fermann , Ferenc Raksi
IPC分类号： H01S3/00
CPC分类号： H01S3/115 , H01S3/005 , H01S3/0604 , H01S3/0606 , H01S3/06754 , H01S3/08031 , H01S3/094007 , H01S3/09415 , H01S3/1611 , H01S3/1618 , H01S3/1673
摘要： The invention describes techniques for the control of the spatial as well as spectral beam quality of multi-mode fiber amplification of high peak power pulses as well as using such a configuration to replace the present diode-pumped, Neodynium based sources. Perfect spatial beam-quality can be ensured by exciting the fundamental mode in the multi-mode fibers with appropriate mode-matching optics and techniques. The loss of spatial beam-quality in the multi-mode fibers along the fiber length can be minimized by using multi-mode fibers with large cladding diameters. Near diffraction-limited coherent multi-mode amplifiers can be conveniently cladding pumped, allowing for the generation of high average power. Moreover, the polarization state in the multi-mode fiber amplifiers can be preserved by implementing multi-mode fibers with stress producing regions or elliptical fiber cores These lasers find application as a general replacement of Nd: based lasers, especially Nd:YAG lasers. Particularly utility is disclosed for applications in the marking, micro-machining and drilling areas.

8. 发明申请

US20050243409A1 Microchip - Yb fiber hybrid optical amplifier for micro-machining and marking 有权
标题翻译： Microchip - Yb光纤混合光放大器用于微加工和标记
公开(公告)号：US20050243409A1
公开(公告)日：2005-11-03
申请号：US11141704
申请日：2005-06-01
申请人： Donald Harter , Martin Fermann
发明人： Donald Harter , Martin Fermann
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/11 , H01S3/16 , H01S3/30
CPC分类号： H01S3/0627 , G02B6/262 , G02F1/3525 , H01S3/0606 , H01S3/0615 , H01S3/06708 , H01S3/06754 , H01S3/094003 , H01S3/094007 , H01S3/094069 , H01S3/09415 , H01S3/115 , H01S3/1611 , H01S3/1618 , H01S3/1673 , H01S3/302
摘要： The invention describes techniques for the control of the spatial as well as spectral beam quality of multi-mode fiber amplification of high peak power pulses as well as using such a configuration to replace the present diode-pumped, Neodynium based sources. Perfect spatial beam-quality can be ensured by exciting the fundamental mode in the multi-mode fibers with appropriate mode-matching optics and techniques. The loss of spatial beam-quality in the multi-mode fibers along the fiber length can be minimized by using multi-mode fibers with large cladding diameters. Near diffraction-limited coherent multi-mode amplifiers can be conveniently cladding pumped, allowing for the generation of high average power. Moreover, the polarization state in the multi-mode fiber amplifiers can be preserved by implementing multi-mode fibers with stress producing regions or elliptical fiber cores These lasers find application as a general replacement of Nd: based lasers, especially Nd:YAG lasers. Particularly utility is disclosed for applications in the marking, micro-machining and drilling areas.
摘要翻译：本发明描述了用于控制高峰值功率脉冲的多模光纤放大的空间以及光束质量的技术，以及使用这种配置来替代当前二极管泵浦的基于钕的源。通过适当的模式匹配光学和技术，可以通过激发多模光纤中的基模来确保完美的空间光束质量。通过使用具有大包层直径的多模光纤，能够使沿着光纤长度的多模光纤中的空间光束质量损失最小化。近衍射极限相干多模放大器可以方便地进行包层泵浦，从而产生高平均功率。此外，通过实施具有应力产生区域或椭圆形光纤核心的多模光纤，可以保持多模光纤放大器中的偏振状态。这些激光器可用作Nd基激光器，尤其是Nd：YAG激光器的一般替代。公开了用于标记，微加工和钻孔领域的应用。

9. 发明申请

US20050105865A1 All-fiber chirped pulse amplification systems 有权
标题翻译：全光纤啁啾脉冲放大系统
公开(公告)号：US20050105865A1
公开(公告)日：2005-05-19
申请号：US10992762
申请日：2004-11-22
申请人： Martin Fermann , Gennady Imeshev , Gyu Cho , Zhenlin Liu , Donald Harter
发明人： Martin Fermann , Gennady Imeshev , Gyu Cho , Zhenlin Liu , Donald Harter
IPC分类号： G02B6/26 , H01S3/00 , H01S3/067
CPC分类号： H01S3/0057 , H01S3/0064 , H01S3/0078 , H01S3/06712 , H01S3/06725 , H01S3/06741 , H01S3/06754 , H01S3/06758 , H01S3/094007 , H01S3/1086 , H01S3/1301 , H01S3/1608 , H01S3/1618 , H01S3/2308 , H01S3/2316 , H01S3/302
摘要： By compensating polarization mode-dispersion as well chromatic dispersion in photonic crystal fiber pulse compressors, high pulse energies can be obtained from all-fiber chirped pulse amplification systems. By inducing third-order dispersion in fiber amplifiers via self-phase modulation, the third-order chromatic dispersion from bulk grating pulse compressors can be compensated and the pulse quality of hybrid fiber/bulk chirped pulse amplification systems can be improved. Finally, by amplifying positively chirped pulses in negative dispersion fiber amplifiers, low noise wavelength tunable seed source via anti-Stokes frequency shifting can be obtained.
摘要翻译：通过补偿光子晶体光纤脉冲压缩器中的偏振模色散以及色散，可以从全光纤啁啾脉冲放大系统获得高脉冲能量。通过自相位调制在光纤放大器中产生三阶色散，可以补偿来自大容量光栅脉冲压缩器的三阶色散，可以提高混合光纤/体积啁啾脉冲放大系统的脉冲质量。最后，通过在负色散光纤放大器中正向啁啾脉冲放大，可以获得经过反斯托克斯频移的低噪声波长可调种子源。

10. 发明申请

US20120205352A1 COMPACT, COHERENT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR 有权
标题翻译：紧凑，相关，中等和远红外的高亮度光源
公开(公告)号：US20120205352A1
公开(公告)日：2012-08-16
申请号：US13026762
申请日：2011-02-14
申请人： Martin FERMANN
发明人： Martin FERMANN
IPC分类号： B23K26/00 , H01S3/30
CPC分类号： H01S3/06725 , B23K26/352 , B23K26/361 , B23K26/362 , H01S3/06712 , H01S3/06741 , H01S3/0675 , H01S3/06754 , H01S3/06791 , H01S3/10015 , H01S3/10092 , H01S3/1112 , H01S3/1118 , H01S3/1608 , H01S3/1616
摘要： Compact high brightness light sources for the mid and far IR spectral region, and exemplary applications are disclosed based on passively mode locked Tm fiber comb lasers. In at least one embodiment the coherence of the comb sources is increased in a system utilizing an amplified single-frequency laser to pump the Tm fiber comb laser. The optical bandwidth generated by the passively mode locked Tm fiber comb laser is further decreased by using simultaneous 2nd and 3rd order dispersion compensation using either appropriate chirped fiber Bragg gratings for dispersion compensation, or fibers with appropriately selected values of 2nd and 3rd order dispersion. Fibers with large anomalous values of third order dispersion, or fibers with large numerical apertures, for example fibers having air-holes formed in the fiber cladding may be utilized.
摘要翻译：基于被动模式锁定的Tm光纤梳状激光器公开了用于中红外光谱区域和远红外光谱区域的紧凑型高亮度光源，以及示例性应用。在至少一个实施例中，在使用放大的单频激光器来泵浦Tm纤维梳状激光器的系统中，梳状源的相干性增加。通过使用用于色散补偿的适当的啁啾光纤布拉格光栅或具有适当选择的二阶和三阶色散值的光纤，通过使用同时的二次和三阶色散补偿来进一步减少由被动模式锁定的Tm光纤梳状激光器产生的光学带宽。可以使用具有三阶分散的大异常值的纤维或具有大数值孔径的纤维，例如在纤维包层中形成具有空气孔的纤维。

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