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11. 发明申请

US20050286569A1 Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters 有权
标题翻译：共振半透半导体饱和吸收器和两个光子吸收功率限制器
公开(公告)号：US20050286569A1
公开(公告)日：2005-12-29
申请号：US11197852
申请日：2005-08-05
申请人： Min Jiang , Donald Harter , Gregg Sucha , Martin Fermann
发明人： Min Jiang , Donald Harter , Gregg Sucha , Martin Fermann
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/08 , H01S3/094 , H01S3/098 , H01S3/106 , H01S3/11 , H01S3/16
CPC分类号： H01S3/1118 , G02F1/3523 , H01S3/067 , H01S3/08059 , H01S3/094003 , H01S3/1063 , H01S3/1608
摘要： An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw modelocked. By using both an R-FPSA and a TPA, the Q-switched modelocked behavior of a fiber laser is observed to evolve into cw modelocking.
摘要翻译：腔内共振法布里 - 珀罗可饱和吸收体（R-FPSA）在诸如光纤激光器的激光器中诱导锁模。诸如双光子吸收器（TPA）的光限制器可以与R-FPSA一起使用，使得Q开关被禁止，导致cw锁模的激光输出。通过使用R-FPSA和TPA，观察到光纤激光器的Q开关模式锁定行为演变成cw锁模。

12. 发明申请

US20070273960A1 IN-LINE, HIGH ENERGY FIBER CHIRPED PULSE AMPLIFICATION SYSTEM 有权
标题翻译：在线，高能量纤维激光脉冲放大系统
公开(公告)号：US20070273960A1
公开(公告)日：2007-11-29
申请号：US11837463
申请日：2007-08-10
申请人： Martin Fermann , Gennady Imeshev , Ingmar Hartl , Donald Harter
发明人： Martin Fermann , Gennady Imeshev , Ingmar Hartl , Donald Harter
IPC分类号： H01S3/00 , H04B10/12
CPC分类号： H01S3/06754 , H01S3/005 , H01S3/0057 , H01S3/0085 , H01S3/0092 , H01S3/06712 , H01S3/06725 , H01S3/094007 , H01S3/10015
摘要： By writing non-linear chirp into fiber Bragg gratings, greater control over dispersion compensation in chirped pulse amplification (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.
摘要翻译：通过将非线性啁啾写入光纤布拉格光栅，获得对啁啾脉冲放大（CPA）系统中色散补偿的更大控制，使得例如光纤布拉格光栅和大容量压缩机的色散曲线可以匹配。编写光纤光栅的迭代方法可以将组延迟纹波降低到非常低的水平; 并且光纤光栅色散轮廓的自适应控制可以进一步降低这些水平，同时在制造这种光栅时提供更大的可接受的产量。可以设计光纤布拉格光栅，以便提供针对各种最终用途（例如微加工）优化的定制脉冲形状，并且还可以用于抵消下游放大器中的增益变窄。

13. 发明申请

US20050232313A1 Single-polarization high power fiber lasers and amplifiers 有权
公开(公告)号：US20050232313A1
公开(公告)日：2005-10-20
申请号：US11109711
申请日：2005-04-20
申请人： Martin Fermann , Donald Harter
发明人： Martin Fermann , Donald Harter
IPC分类号： G02B6/02 , G02B6/024 , G02B6/036 , G02B6/44 , H01S3/06 , H01S3/067 , H01S3/098 , H01S3/10 , 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.

14. 发明申请

US20050008044A1 Mode-locked multi-mode fiber laser pulse source 审中-公开
公开(公告)号：US20050008044A1
公开(公告)日：2005-01-13
申请号：US10850509
申请日：2004-05-20
申请人： Martin Fermann , Donald Harter
发明人： Martin Fermann , Donald Harter
IPC分类号： H01S3/06 , H01S3/067 , H01S3/098
CPC分类号： H01S3/06708 , G02B6/26 , H01S3/0092 , H01S3/067 , H01S3/06704 , H01S3/06712 , H01S3/06716 , H01S3/06725 , H01S3/06729 , H01S3/06733 , H01S3/06737 , H01S3/06745 , H01S3/06783 , H01S3/08045 , H01S3/08054 , H01S3/094007 , H01S3/094019 , H01S3/094042 , H01S3/094069 , H01S3/1106 , H01S3/1109 , H01S3/1115 , H01S3/1118 , H01S3/1608 , H01S3/1618
摘要： A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity. To amplify and compress optical pulses in a multi-mode (MM) optical fiber, a single-mode is launched into the MM fiber by matching the modal profile of the fundamental mode of the MM fiber with a diffraction-limited optical mode at the launch end, The fundamental mode is preserved in the MM fiber by minimizing mode-coupling by using relatively short lengths of step-index MM fibers with a few hundred modes and by minimizing fiber perturbations. Doping is confined to the center of the fiber core to preferentially amplify the fundamental mode, to reduce amplified spontaneous emission and to allow gain-guiding of the fundamental mode. Gain-guiding allows for the design of systems with length-dependent and power-dependent diameters of the fundamental mode. To allow pumping with high-power laser diodes, a double-clad amplifier structure is employed. For applications in nonlinear pulse-compression, self phase modulation and dispersion in the optical fibers can be exploited. High-power optical pulses may be linearly compressed using bulk optics dispersive delay lines or by chirped fiber Bragg gratings written directly into the SM or MM optical fiber. High-power cw lasers operating in a single near-diffraction-limited mode may be constructed from MM fibers by incorporating effective mode-filters into the laser cavity. Regenerative fiber amplifiers may be constructed from MM fibers by careful control of the recirculating mode. Higher-power Q-switched fiber lasers may be constructed by exploiting the large energy stored in MM fiber amplifiers.

15. 发明申请

US20050111500A1 Utilization of Yb: and Nd: mode-locked oscillators in solid-state short pulse laser systems 有权
标题翻译：在固态短脉冲激光系统中利用Yb：和Nd：锁模振荡器
公开(公告)号：US20050111500A1
公开(公告)日：2005-05-26
申请号：US10960923
申请日：2004-10-12
申请人： Donald Harter , Gyu Cho , Martin Fermann , Ingmar Hartl
发明人： Donald Harter , Gyu Cho , Martin Fermann , Ingmar Hartl
IPC分类号： G02B6/02 , G02F1/35 , G02F1/37 , H01S3/00 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/109 , H01S3/16 , H01S3/23 , 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。

16. 发明授权

US07782910B2 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：US07782910B2
公开(公告)日：2010-08-24
申请号：US11109711
申请日：2005-04-20
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。

17. 发明授权

US06954575B2 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：US06954575B2
公开(公告)日：2005-10-11
申请号：US09809248
申请日：2001-03-16
申请人： Martin Fermann , Donald J. Harter
发明人： Martin Fermann , Donald J. Harter
IPC分类号： G02B6/02 , G02B6/024 , G02B6/036 , G02B6/44 , H01S3/06 , H01S3/067 , H01S3/098 , H01S3/10
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。

18. 发明申请

US20050018714A1 Polarization maintaining dispersion controlled fiber laser source of ultrashort pulses 有权
标题翻译：极化维持色散控制光纤激光源的超短脉冲
公开(公告)号：US20050018714A1
公开(公告)日：2005-01-27
申请号：US10627069
申请日：2003-07-25
申请人： Martin Fermann , Gyu Cho
发明人： Martin Fermann , Gyu Cho
IPC分类号： H01L20060101 , H01S3/00 , H01S3/067 , H01S3/08 , H01S3/094 , H01S3/0941 , H01S3/098 , H01S3/1055 , H01S3/127 , H01S3/30
CPC分类号： H01S3/1118 , H01S3/005 , H01S3/06708 , H01S3/06712 , H01S3/094019 , H01S3/0941 , H01S3/1055
摘要： A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth are obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber.
摘要翻译：具有增强的脉冲宽度控制的锁模线性光纤激光腔包括两个偏振保持和非偏振保持光纤的级联部分。变形纤维布拉格光栅和集成光纤偏振器被包括在空腔中，以帮助线性偏振空腔的输出。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。

19. 发明授权

US5127928A Method for the manufacture of a waveguide mixer 失效
标题翻译：波导混合器的制造方法
公开(公告)号：US5127928A
公开(公告)日：1992-07-07
申请号：US576504
申请日：1991-01-22
申请人： Mark Farries , Luksun Li , Martin Fermann , David Payne
发明人： Mark Farries , Luksun Li , Martin Fermann , David Payne
IPC分类号： G02F1/37 , G02F1/383
CPC分类号： G02F1/383
摘要： A method is presented for writing a permanent spatially periodic phase-matching second-order non-linearity grating in an optical waveguide. Single frequency exciting radiation is launched in a pair of guided modes of the waveguide in the presence of an external DC electric field applied in a direction transverse to the waveguide. The exciting radiation may be either co-propagating or counter-propagating. The above method may be refined by performing it once for an estimated value of exciting radiation frequency, testing the waveguide to determine error in the chosen estimate, erasing the grating and re-performing the method using a corrected value for the frequency of the exciting radiation.
摘要翻译： PCT No.PCT / GB90 / 00136 Sec。 371日期1991年1月22日 102（e）1991年1月22日PCT PCT 1990年1月31日PCT公布。第WO90 / 08973号公报日期：1990年8月9日。一种用于在光波导中写入永久空间周期性相位匹配二阶非线性光栅的方法。在沿着横向于波导的方向施加的外部DC电场的存在下，在波导的一对引导模式中发射单频激励辐射。激发的辐射可以是共传播的或反向传播的。可以通过对激发辐射频率的估计值执行一次来改进上述方法，测试波导以确定所选择的估计中的误差，擦除光栅并且使用针对激发辐射的频率的校正值来重新执行该方法。

20. 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。

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