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1. 发明授权

US08072678B2 Modular, high energy, widely-tunable ultrafast fiber source 有权
标题翻译：模块化，高能量，广泛可调的超快速光纤源
公开(公告)号：US08072678B2
公开(公告)日：2011-12-06
申请号：US12608636
申请日：2009-10-29
申请人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
发明人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
IPC分类号： H01S3/11
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. System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. 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. 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. A particularly compact implementation of the whole system uses fiber oscillators in conjunction with fiber amplifiers.
摘要翻译：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。通过使用由二极管激光器直接或间接泵浦的高效光纤放大器来确保系统紧凑性。在存在自相位调制和增益的情况下通过分散脉冲拉伸引入分散加宽，从而形成大功率抛物线脉冲。另外，简单的光纤延迟线或啁啾光纤光栅也引入了色散。通过使用具有不同数量的波导色散的光纤或通过控制光纤光栅的啁啾将色散延迟线中的脉冲相位控制为四次。放大后，通过实施另一组分散延迟线，可以将分散拉伸的脉冲重新压缩到接近其带宽极限。整个系统的特别紧凑的实现使用光纤振荡器与光纤放大器。

2. 发明授权

US08031396B2 Modular, high energy, widely-tunable ultrafast fiber source 有权
公开(公告)号：US08031396B2
公开(公告)日：2011-10-04
申请号：US12608602
申请日：2009-10-29
申请人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
发明人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
IPC分类号： H01S3/11 , H01S3/067
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. System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. 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. 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. A particularly compact implementation of the whole system uses fiber oscillators in conjunction with fiber amplifiers.

3. 发明授权

US07688499B2 Modular, high energy, widely-tunable ultrafast fiber source 有权
标题翻译：模块化，高能量，广泛可调的超快速光纤源
公开(公告)号：US07688499B2
公开(公告)日：2010-03-30
申请号：US11643765
申请日：2006-12-22
申请人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
发明人： Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter
IPC分类号： H01S3/067 , H04B10/17
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. 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. 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.
摘要翻译：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。通过实现可互换的放大器组件来确保模块化。通过使用由二极管激光器直接或间接泵浦的高效光纤放大器来确保系统紧凑性。在存在自相位调制和增益的情况下通过分散脉冲拉伸引入分散加宽，从而形成大功率抛物线脉冲。另外，简单的光纤延迟线或啁啾光纤光栅也引入了色散，从而进一步提高了光纤放大器的能量处理能力。放大后，通过实施另一组分散延迟线，可以将分散拉伸的脉冲重新压缩到接近其带宽极限。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。

4. 发明授权

US07656578B2 Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking 失效
标题翻译：用于微加工和标记的Microchip-Yb光纤混合光放大器
公开(公告)号：US07656578B2
公开(公告)日：2010-02-02
申请号：US11372185
申请日：2006-03-10
申请人： Almantas Galvanauskas , Donald J. Harter , Martin E. Fermann , Ferenc Raksi
发明人： Almantas Galvanauskas , Donald J. Harter , Martin E. 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.
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。

5. 发明授权

US07492508B2 Microchip—Yb fiber hybrid optical amplifier for micro-machining and marking 有权
标题翻译：用于微加工和标记的Microchip-Yb光纤混合光放大器
公开(公告)号：US07492508B2
公开(公告)日：2009-02-17
申请号：US11643760
申请日：2006-12-22
申请人： Almantas Galvanauskas , Donald J. Harter , Martin E. Fermann , Ferenc Raksi
发明人： Almantas Galvanauskas , Donald J. Harter , Martin E. Fermann , Ferenc Raksi
IPC分类号： H01S3/00
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： A fiber amplifier includes at least one coreless end used for the input or extraction of optical energy. The coreless end has a transverse cross section which differs from the transverse cross section of the core at fiber locations remote from the end, so that the diameter of the input or extracted optical beam at the coreless end can be larger than the diameter of the fiber core, to increase an optical damage threshold of the fiber amplifier.
摘要翻译：光纤放大器包括用于输入或提取光能的至少一个无芯端。无芯端部具有与远离端部的光纤位置处的芯部的横截面不同的横截面，使得在无芯端处的输入或提取的光束的直径可以大于光纤的直径核心，增加光纤放大器的光损伤阈值。

6. 发明授权

US06344921B1 Optical parametric amplifiers and generators in optical communication systems 有权
标题翻译：光通信系统中的光参量放大器和发生器
公开(公告)号：US06344921B1
公开(公告)日：2002-02-05
申请号：US09253949
申请日：1999-02-22
申请人： Almantas Galvanauskas , Donald J. Harter , Ka K. Wong , Martin E. Fermann
发明人： Almantas Galvanauskas , Donald J. Harter , Ka K. Wong , Martin E. Fermann
IPC分类号： G02F1365
CPC分类号： H04B10/291 , G02F1/3775 , G02F1/395 , G02F2001/3548
摘要： A high gain optical parametric amplifier is implemented in a LiNbO3 waveguide fabricated by a combination of periodic electric field poling and proton exchange techniques. The device is capable of amplification in the whole transmission window of silica optical fibers with gains up to 90 dB. The high nonlinearity and resultant high gain of the waveguide-amplifier permits the use of essentially standard power (milliwatt to 10 watt) fiber laser pump sources.
摘要翻译：在通过周期性电场极化和质子交换技术的组合制造的LiNbO 3波导中实现高增益光参量放大器。该器件能够在石英光纤的整个传输窗口中进行放大，其增益可达90 dB。波导放大器的高非线性和高增益允许使用基本上标准功率（毫瓦至10瓦）的光纤激光泵源。

7. 发明授权

US07190511B2 Fiber laser system with increased optical damage threshold 有权
标题翻译：光纤激光系统具有增加的光损伤阈值
公开(公告)号：US07190511B2
公开(公告)日：2007-03-13
申请号：US11339679
申请日：2006-01-26
申请人： Almantas Galvanauskas , Donald J. Harter , Martin E. Fermann , Ferenc Raksi
发明人： Almantas Galvanauskas , Donald J. Harter , Martin E. Fermann , Ferenc Raksi
IPC分类号： H01S3/00 , G02B6/26
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。

8. 发明授权

US06249630B1 Apparatus and method for delivery of dispersion-compensated ultrashort optical pulses with high peak power 有权
标题翻译：用于传送具有高峰值功率的色散补偿超短脉冲光脉冲的装置和方法
公开(公告)号：US06249630B1
公开(公告)日：2001-06-19
申请号：US09232807
申请日：1999-01-19
申请人： Michelle L. Stock , Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter , Gregg D. Sucha
发明人： Michelle L. Stock , Martin E. Fermann , Almantas Galvanauskas , Donald J. Harter , Gregg D. Sucha
IPC分类号： G02B602
CPC分类号： G02B6/29394 , G02F1/37 , G02F2001/3542 , H01S3/0057 , H01S3/06754 , H01S3/1603 , H01S3/302 , H01S2301/085 , H04B10/25133 , H04B2210/252 , H04B2210/254
摘要： An apparatus and method for delivery of high peak power pulse through an optical fiber to an optical device includes an ultrashort pulsed laser source which produces ultrashort optical pulses having high peak power. Prior to transmitting the optical pulses through a delivery optical fiber, the pulse width of the optical pulses is stretched, forming chirped optical pulses having a lower peak power. The stretched pulses are transmitted through an optical fiber which delivers the pulse to an optical device requiring ultrashort, high peak power optical pulses. The optical fiber and/or an output unit coupled to the end of the optical fiber introduces a dispersion which compensates for the dispersion introduced by the pulsed laser source and the stretcher, and delivers a recompressed optical pulse to an optical device. The optical fiber delivery system preferably pre-compensates for the dispersion introduced by optical components within the optical device, so that the optical pulses are fully recompressed at a point of interest within the optical device, such as at a specimen or at a detector. The optical fiber delivery system may include a frequency converter either before or after the delivery optical fiber. The frequency converter allows optical pulses having frequencies other than that generated by the laser source to be delivered to the optical device in an efficient manner.
摘要翻译：用于通过光纤将高峰值功率脉冲传送到光学器件的装置和方法包括产生具有高峰值功率的超短光脉冲的超短脉冲激光源。在通过输送光纤发送光脉冲之前，光脉冲的脉冲宽度被拉伸，形成具有较低峰值功率的啁啾光脉冲。拉伸的脉冲通过光纤传输，该光纤将脉冲传送到需要超短，高峰值功率的光脉冲的光学装置。耦合到光纤端部的光纤和/或输出单元引入补偿由脉冲激光源和担架引入的色散的色散，并将再压缩的光脉冲传送到光学器件。光纤传送系统优选地预补偿由光学器件内的光学部件引入的色散，使得光脉冲在光学装置内的感兴趣点例如样品或检测器处被完全再压缩。光纤传输系统可以在传送光纤之前或之后包括变频器。变频器允许具有不同于激光源产生的频率的光脉冲以有效的方式传送到光学装置。

9. 发明授权

US5696782A High power fiber chirped pulse amplification systems based on cladding pumped rare-earth doped fibers 失效
标题翻译：基于包覆泵浦稀土掺杂光纤的大功率光纤啁啾脉冲放大系统
公开(公告)号：US5696782A
公开(公告)日：1997-12-09
申请号：US445287
申请日：1995-05-19
申请人： Donald J. Harter , Almantas Galvanauskas , Martin E. Fermann
发明人： Donald J. Harter , Almantas Galvanauskas , Martin E. Fermann
IPC分类号： G02F1/35 , H01S3/00 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/23
CPC分类号： H01S3/06708 , H01S3/0057 , H01S3/06729 , H01S3/06754 , H01S3/094003 , Y10S372/703
摘要： Cladding-pumped fibers are used for chirped pulse amplification of ultrashort optical pulses, increasing the average output power by one order of magnitude and substantially decreasing the cost of pump sources. Broad-area multimode diode pumped Er/Yb codoped fiber amplifiers and MOPA pumped high-power Er-doped fiber amplifiers are used to achieve chirped pulse amplification.
摘要翻译：包层泵浦光纤用于超短脉冲的啁啾脉冲放大，将平均输出功率提高一个数量级，并大大降低泵浦源的成本。广域多模二极管泵浦Er / Yb共掺光纤放大器和MOPA泵浦大功率掺铒光纤放大器用于实现啁啾脉冲放大。

10. 发明授权

US07995270B2 Microchip—Yb fiber hybrid optical amplifier for micro-machining and marking 有权
标题翻译：用于微加工和标记的Microchip-Yb光纤混合光放大器
公开(公告)号：US07995270B2
公开(公告)日：2011-08-09
申请号：US12647106
申请日：2009-12-24
申请人： Donald J. Harter , Martin E. Fermann , Ferenc Raksi , Almantas Galvanauskas
发明人： Donald J. Harter , Martin E. Fermann , Ferenc Raksi , Almantas Galvanauskas
IPC分类号： H01S3/00
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。

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