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11. 发明授权

US08237122B2 Optical scanning and imaging systems based on dual pulsed laser systems 有权
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：US08237122B2
公开(公告)日：2012-08-07
申请号：US13399392
申请日：2012-02-17
申请人： Martin E. Fermann , Ingmar Hartl
发明人： Martin E. Fermann , Ingmar Hartl
IPC分类号： G01J5/02
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 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.
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。

12. 发明授权

US08208196B2 Pulsed laser sources 有权
标题翻译：脉冲激光源
公开(公告)号：US08208196B2
公开(公告)日：2012-06-26
申请号：US12687807
申请日：2010-01-14
申请人： Martin E. Fermann , Ingmar Hartl , Gennady Imeshev
发明人： Martin E. Fermann , Ingmar Hartl , Gennady Imeshev
IPC分类号： G02F1/35 , H01S3/098
CPC分类号： H01S3/0057 , G02F1/3517 , G02F2001/3528 , H01S3/0078 , H01S3/0092 , H01S3/067 , H01S3/0675 , H01S3/06754 , H01S3/094042 , H01S3/10 , H01S3/105 , H01S3/1053 , H01S3/106 , H01S3/1067 , H01S3/109 , H01S3/1106 , H01S3/1118 , H01S3/1616
摘要： Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain embodiments exclude such an isolator. A reflective optical element on one end of the resonator having a relatively low reflectivity may be employed to couple light from the laser resonator to the amplifier. Enhanced pulse-width control may be provided with concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers may be also be included in the laser cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth may be obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber. Frequency comb sources may be constructed from such modelocked fiber oscillators. In various exemplary embodiments, low dispersion and an in-line interferometer that provides feedback, assist in controlling the frequency components output from the comb source.
摘要翻译：各种实施例包括可与光放大器耦合的锁模光纤激光谐振器。隔离器可以将激光谐振器与放大器分离，尽管某些实施例不包括这种隔离器。可以使用具有相对较低反射率的谐振器的一端上的反射光学元件将来自激光谐振器的光耦合到放大器。可以提供增强的脉冲宽度控制，其具有两个偏振保持和非偏振保持光纤的级联部分。变形光纤布拉格光栅和集成光纤偏振器也可以包括在激光腔中，以帮助线性偏振空腔的输出。可以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。频率梳源可以由这种锁模光纤振荡器构成。在各种示例性实施例中，提供反馈的低色散和在线干涉仪有助于控制从梳状源输出的频率分量。

13. 发明授权

US08120778B2 Optical scanning and imaging systems based on dual pulsed laser systems 有权
公开(公告)号：US08120778B2
公开(公告)日：2012-02-21
申请号：US12399435
申请日：2009-03-06
申请人： Martin E. Fermann , Ingmar Hartl
发明人： Martin E. Fermann , Ingmar Hartl
IPC分类号： G01B9/02 , G01J3/45 , H01S3/13
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 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.

14. 发明申请

US20090097515A1 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：US20090097515A1
公开(公告)日：2009-04-16
申请号：US12340036
申请日：2008-12-19
申请人： Donald J. HARTER , Gyu C. Cho , Zhenlin Liu , Martin E. Fermann , Xinhua Gu , Salvatore F. Nati , Lawrence Shah , Ingmar Hartl , Mark Bendett
发明人： Donald J. HARTER , Gyu C. Cho , Zhenlin Liu , Martin E. Fermann , Xinhua Gu , Salvatore F. Nati , Lawrence Shah , Ingmar Hartl , Mark Bendett
IPC分类号： H01S3/10
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。

15. 发明申请

US20080232407A1 UTILIZATION OF YB: AND ND: MODE-LOCKED OSCILLATORS IN SOLID-STATE SHORT PULSE LASER SYSTEM 有权
标题翻译： YB：和ND的利用：固态短脉冲激光系统中的锁模振荡器
公开(公告)号：US20080232407A1
公开(公告)日：2008-09-25
申请号：US12132364
申请日：2008-06-03
申请人： Donald J. HARTER , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
发明人： Donald J. HARTER , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
IPC分类号： H01S3/10
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

US09787051B2 Compact optical frequency comb systems 有权
公开(公告)号：US09787051B2
公开(公告)日：2017-10-10
申请号：US14325721
申请日：2014-07-08
申请人： Martin E. Fermann , Thomas R. Schibli , Ingmar Hartl
发明人： Martin E. Fermann , Thomas R. Schibli , Ingmar Hartl
IPC分类号： H01S3/10 , H01S3/11 , H01S3/08 , H01S3/105 , H01S3/067 , H01S3/16 , H01S3/00 , H01S3/17
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.

17. 发明授权

US08773754B2 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：US08773754B2
公开(公告)日：2014-07-08
申请号：US13053600
申请日：2011-03-22
申请人： Donald J. Harter , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
发明人： Donald J. Harter , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
IPC分类号： H04B10/17 , H01S3/10 , H01S5/50 , H01S3/23
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。

18. 发明申请

US20120281720A1 BROADBAND GENERATION OF COHERENT CONTINUA WITH OPTICAL FIBERS 审中-公开
标题翻译：光纤连续光纤的宽带产生
公开(公告)号：US20120281720A1
公开(公告)日：2012-11-08
申请号：US13458058
申请日：2012-04-27
申请人： Martin E. Fermann , Kevin Cossel , Michael J. Martin , Ingmar Hartl , Jun Ye , Axel Ruehl
发明人： Martin E. Fermann , Kevin Cossel , Michael J. Martin , Ingmar Hartl , Jun Ye , Axel Ruehl
IPC分类号： H01S3/067
CPC分类号： H01S3/0057 , G02F1/383 , G02F2203/56 , H01S3/0675 , H01S3/06754 , H01S3/1115 , H01S3/1618
摘要： Coherent and compact supercontinuum light sources for the mid IR spectral regime and exemplary applications are disclosed based on the use highly nonlinear fibers or waveguides. In at least one embodiment the coherence of the supercontinuum sources is increased using nonlinear material with an elevated vibrational contribution to the nonlinear response function. 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.
摘要翻译：基于使用高度非线性的光纤或波导，公开了用于中红外光谱方案和示例性应用的相干和紧凑的超连续光源。在至少一个实施例中，使用对非线性响应函数具有较高的振动贡献的非线性材料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。

19. 发明授权

US07929203B2 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：US07929203B2
公开(公告)日：2011-04-19
申请号：US12132364
申请日：2008-06-03
申请人： Donald J. Harter , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
发明人： Donald J. Harter , Gyu C. Cho , Martin E. Fermann , Ingmar Hartl
IPC分类号： H04B10/17
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。这些脉冲在Yb或Nd：掺杂光纤锁模振荡器中产生，并且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。

20. 发明授权

US07518788B2 In-line, high energy fiber chirped pulse amplification system 有权
标题翻译：在线高能纤维啁啾脉冲放大系统
公开(公告)号：US07518788B2
公开(公告)日：2009-04-14
申请号：US11837463
申请日：2007-08-10
申请人： Martin E. Fermann , Gennady Imeshev , Ingmar Hartl , Donald J. Harter
发明人： Martin E. Fermann , Gennady Imeshev , Ingmar Hartl , Donald J. Harter
IPC分类号： H01S3/00
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。

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