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公开(公告)号：US20090323740A1
公开(公告)日：2009-12-31
申请号：US12259176
申请日：2008-10-27
申请人： Andrew D. Stadler , David Goldman , Mark Farley , Michael M. Mielke , Kyungbum Kim , Laurent Vaissié , Robert G. Waarts , Michael J. Cumbo
发明人： Andrew D. Stadler , David Goldman , Mark Farley , Michael M. Mielke , Kyungbum Kim , Laurent Vaissié , Robert G. Waarts , Michael J. Cumbo
IPC分类号： H01S3/10
CPC分类号： H01S3/0057 , G02B6/2706 , G02B6/2931 , G02B6/2932 , H01S3/083 , H01S3/235
摘要： A method of controlling an ultra-short pulse system is described comprising controlling an optical power within the ultra-short pulse system and control-system controlling a width of an optical pulse. In some embodiments, the method also comprises tuning a compressor by controlling a number of passes of the optical pulse through a Bragg grating to control the width of the optical pulse output from the compressor. In other embodiments, the method may comprise tuning a multi-pass stretcher by controlling a number of passes of the optical pulse through a loop of the multi-pass stretcher to control the width of the optical pulse output from the multi-pass stretcher. A method of controlling an ultra-short pulse system may also comprise accessing a control system from a remotely located command station, communicating status information from the control system to the command station, and communicating information from the command station to the control system.
摘要翻译： 描述了一种控制超短脉冲系统的方法，包括控制超短脉冲系统内的光功率和控制光脉冲宽度的控制系统。 在一些实施例中，该方法还包括通过控制通过布拉格光栅的光脉冲的通过次数来调节压缩器，以控制从压缩机输出的光脉冲的宽度。 在其他实施例中，该方法可以包括通过控制多通道担架的环路来控制光脉冲的通过次数来调整多通道担架，以控制从多通道担架输出的光脉冲的宽度。 控制超短脉冲系统的方法还可以包括从远程定位的命令站访问控制系统，将状态信息从控制系统传送到命令站，以及将信息从命令站传送到控制系统。
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公开(公告)号：US08139910B2
公开(公告)日：2012-03-20
申请号：US12259176
申请日：2008-10-27
申请人： Andrew D. Stadler , David Goldman , Mark Farley , Michael M. Mielke , Kyungbum Kim , Laurent Vaissié , Robert G. Waarts , Michael J. Cumbo
发明人： Andrew D. Stadler , David Goldman , Mark Farley , Michael M. Mielke , Kyungbum Kim , Laurent Vaissié , Robert G. Waarts , Michael J. Cumbo
CPC分类号： H01S3/0057 , G02B6/2706 , G02B6/2931 , G02B6/2932 , H01S3/083 , H01S3/235
摘要： A method of controlling an ultra-short pulse system is described comprising controlling an optical power within the ultra-short pulse system and control-system controlling a width of an optical pulse. In some embodiments, the method also comprises tuning a compressor by controlling a number of passes of the optical pulse through a Bragg grating to control the width of the optical pulse output from the compressor. In other embodiments, the method may comprise tuning a multi-pass stretcher by controlling a number of passes of the optical pulse through a loop of the multi-pass stretcher to control the width of the optical pulse output from the multi-pass stretcher. A method of controlling an ultra-short pulse system may also comprise accessing a control system from a remotely located command station, communicating status information from the control system to the command station, and communicating information from the command station to the control system.
摘要翻译： 描述了一种控制超短脉冲系统的方法，包括控制超短脉冲系统内的光功率和控制光脉冲宽度的控制系统。 在一些实施例中，该方法还包括通过控制通过布拉格光栅的光脉冲的通过次数来调节压缩器，以控制从压缩机输出的光脉冲的宽度。 在其他实施例中，该方法可以包括通过控制多通道担架的环路来控制光脉冲的通过次数来调整多通道担架，以控制从多通道担架输出的光脉冲的宽度。 控制超短脉冲系统的方法还可以包括从远程定位的命令站访问控制系统，将状态信息从控制系统传送到命令站，以及将信息从命令站传送到控制系统。
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公开(公告)号：US07444049B1
公开(公告)日：2008-10-28
申请号：US11615883
申请日：2006-12-22
CPC分类号： H01S3/0057 , G02B6/2706 , G02B6/2931 , G02B6/2932 , H01S3/083 , H01S3/235
摘要： A chirped pulse amplification (CPA) system and method is described wherein the pulse is stretched using multiple passes through a Bragg grating or compressed using multiple passes through a Bragg grating. A switch may be used to control the number of passes through the Bragg grating, thus, tuning the compressed or the stretched pulse width. The pulse may be directed through an amplifier between the multiple passes through the Bragg grating to apply amplification to the stretched pulse multiple times. The Bragg grating may include a fiber Bragg grating, a volume Bragg grating, or a Bragg waveguide.
摘要翻译： 描述了一种啁啾脉冲放大（CPA）系统和方法，其中使用多遍通过布拉格光栅进行脉冲拉伸或使用多次穿过布拉格光栅进行压缩。 可以使用开关来控制通过布拉格光栅的通过次数，从而调谐压缩或拉伸的脉冲宽度。 脉冲可以通过布拉格光栅的多遍之间的放大器引导，以对扩展的脉冲进行多次放大。 布拉格光栅可以包括光纤布拉格光栅，体积布拉格光栅或布拉格波导。
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4.发明授权Systems and methods for controlling a pulsed laser by combining laser signals 有权通过组合激光信号控制脉冲激光的系统和方法公开(公告)号：US08125704B2
公开(公告)日：2012-02-28
申请号：US12229043
申请日：2008-08-18
申请人： Michael M. Mielke , Robert G. Waarts , Sha Tong , Kok Wai Chang
发明人： Michael M. Mielke , Robert G. Waarts , Sha Tong , Kok Wai Chang
IPC分类号： H04B10/17
CPC分类号： H01S3/0057 , H01S3/06754 , H01S3/10046 , H01S3/10061 , H01S3/1302 , H01S3/2308 , H01S3/2383 , H01S2301/02
摘要： An ultra-short pulsed laser system comprises an optical combiner, optical amplifier, optical pulse compressor, and optical separator. The optical combiner is configured to combine a primary optical pulse with a secondary optical signal to generate a combined optical signal. The primary optical pulse and the secondary optical signal have a distinguishable characteristic. The optical amplifier is configured to optically amplify the combined optical signal. The optical pulse compressor is configured to compress at least the primary optical pulse contained within the optically amplified combined optical signal and output a compressed combined optical signal. The optical separator is configured to separate the compressed combined optical signal into an output primary optical pulse and an output secondary optical signal according to the distinguishable characteristic.
摘要翻译： 超短脉冲激光系统包括光学组合器，光放大器，光脉冲压缩器和光分离器。 光组合器被配置为将初级光脉冲与次光信号组合以产生组合的光信号。 主光脉冲和次光信号具有可区分的特性。 光放大器被配置为光学放大组合的光信号。 光脉冲压缩器被配置为至少压缩光放大组合光信号中包含的主光脉冲，并输出压缩的组合光信号。 光分离器被配置为根据可区分的特性将压缩的组合光信号分离成输出主光脉冲和输出次光信号。
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5.发明申请Systems and methods for controlling a pulsed laser by combining laser signals 有权通过组合激光信号控制脉冲激光的系统和方法公开(公告)号：US20100040095A1
公开(公告)日：2010-02-18
申请号：US12229043
申请日：2008-08-18
申请人： Michael M. Mielke , Robert G. Waarts , Sha Tong , Kok Wai Chang
发明人： Michael M. Mielke , Robert G. Waarts , Sha Tong , Kok Wai Chang
IPC分类号： H01S3/10
CPC分类号： H01S3/0057 , H01S3/06754 , H01S3/10046 , H01S3/10061 , H01S3/1302 , H01S3/2308 , H01S3/2383 , H01S2301/02
摘要： An ultra-short pulsed laser system comprises an optical combiner, optical amplifier, optical pulse compressor, and optical separator. The optical combiner is configured to combine a primary optical pulse with a secondary optical signal to generate a combined optical signal. The primary optical pulse and the secondary optical signal have a distinguishable characteristic. The optical amplifier is configured to optically amplify the combined optical signal. The optical pulse compressor is configured to compress at least the primary optical pulse contained within the optically amplified combined optical signal and output a compressed combined optical signal. The optical separator is configured to separate the compressed combined optical signal into an output primary optical pulse and an output secondary optical signal according to the distinguishable characteristic.
摘要翻译： 超短脉冲激光系统包括光学组合器，光放大器，光脉冲压缩器和光分离器。 光组合器被配置为将初级光脉冲与次光信号组合以产生组合的光信号。 主光脉冲和次光信号具有可区分的特性。 光放大器被配置为光学放大组合的光信号。 光脉冲压缩器被配置为至少压缩光放大组合光信号中包含的主光脉冲，并输出压缩的组合光信号。 光分离器被配置为根据可区分的特性将压缩的组合光信号分离成输出主光脉冲和输出次光信号。
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公开(公告)号：US07260133B2
公开(公告)日：2007-08-21
申请号：US11012362
申请日：2004-12-15
CPC分类号： H01S3/09415 , H01S3/0604 , H01S3/0612 , H01S3/0627 , H01S3/08 , H01S3/08036 , H01S3/08054 , H01S3/109 , H01S3/113
摘要： A diode-pumped laser with a direct edge coupling of a pump beam is provided. The laser includes a microchip laser cavity optically pumped by a laser diode emitting an astigmatic pump beam having a substantially elliptical beam cross-section at an output laser diode facet. The microchip laser cavity is disposed at a substantial distance exceeding 0.001″ from the laser diode pump where the astigmatic pump beam has a greatly reduced ellipticity, providing high laser output efficiency without coupling lens element between the laser cavity and the laser diode pump. The pumping arrangement is favourable for single-mode lasing. In some embodiments, the laser cavity includes nonlinear crystal for intra-cavity SHG, a saturable absorber for passive Q-switching and mode locking, and a polarizing prism.
摘要翻译： 提供了具有泵浦光束的直接边缘耦合的二极管泵浦激光器。 激光器包括由激光二极管光泵浦的微芯片激光器腔体，该激光二极管在输出激光二极管面处发射具有基本椭圆形光束横截面的像散泵浦光束。 微激光器激光腔设置在距离激光二极管泵超过0.001“的实质距离处，其中散光泵浦光束具有大大降低的椭圆率，在激光腔和激光二极管泵之间提供高激光输出效率而不耦合透镜元件。 泵浦装置有利于单模激光。 在一些实施例中，激光腔包括用于腔内SHG的非线性晶体，用于无源Q开关和模式锁定的可饱和吸收器和偏振棱镜。
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7.发明授权Stabilization of laser sources with closely-coupled optical reflectors using an internal dither circuit 有权使用内部抖动电路使紧密耦合的光反射器稳定激光源公开(公告)号：US06215809B1
公开(公告)日：2001-04-10
申请号：US09197062
申请日：1998-11-20
申请人： Mehrdad Ziari , Robert G. Waarts , Robert J. Lang , John DeAndrea , Michael L. Bortz , Brian F. Ventrudo
发明人： Mehrdad Ziari , Robert G. Waarts , Robert J. Lang , John DeAndrea , Michael L. Bortz , Brian F. Ventrudo
IPC分类号： H01S308
CPC分类号： H01S3/094003 , H01S5/0652 , H01S5/146
摘要： Apparatus for providing a laser source optically coupled to an optical waveguide, such as an optical fiber, having a reflective grating positioned from the output facet of the laser source a distance equal to or greater than the coherence length of the laser source providing a portion of reflective feedback into the laser source optical cavity to maintain wavelength operation of the laser source in spite of changes in the laser operating temperature or drive current based upon coherence collapse in the laser operation. In cases where the fiber grating is positioned in the fiber within the coherence length of the laser source, intermittent coherence collapse, as opposed to continuous coherence collapse, is unavoidable. In cases where such a laser source is a pumping source for a solid state gain medium, such as an optical amplifier or laser having an active gain element, e.g., an Er doped amplifier, undesirable perturbations in the laser source output are present which have a deleterious effect on the operation of the solid state gain medium. The effect of these undesirable perturbations are substantially removed by a small, continuous variation or dither in the driving current of the laser source having a rate of variation that exceeds the active gain element excited state lifetime thereby controlling the switching of the laser source operation between states of coherency and coherence collapse. As a result, the effects of laser source perturbations are avoided so as not to have an effect on the operation of the coupled solid state gain medium so that its gain stability is improved. Various embodiments of dither circuits are disclosed. In addition, polarization-maintaining behavior is induced in optical waveguides to further improve laser source stability.
摘要翻译： 用于提供光学耦合到诸如光纤的光波导的激光源的设备，其具有从激光源的输出小面定位的反射光栅，距离等于或大于激光源的相干长度，该距离提供一部分 反射反射到激光源光学腔中以保持激光源的波长操作，尽管激光器工作温度或驱动电流基于激光器操作中的相干性崩溃而发生变化。 在光纤光栅位于激光源的相干长度内的纤维光纤的情况下，与连续相干塌陷相反，间歇性相干塌陷是不可避免的。 在这种激光源是用于固态增益介质的泵浦源的情况下，例如具有有源增益元件（例如，Er掺杂放大器）的光放大器或激光器，存在激光源输出中的不期望的扰动，其具有 对固态增益介质的操作有害的影响。 这些不期望的扰动的效果通过在激光源的驱动电流中的小的连续变化或抖动基本上消除，其具有超过有源增益元件激发态寿命的变化率，从而控制状态之间的激光源操作的切换 的一致性和一致性崩溃。 结果，避免了激光源扰动的影响，从而不会对耦合的固态增益介质的操作产生影响，从而提高了其增益稳定性。 公开了抖动电路的各种实施例。 此外，在光波导中引起偏振保持行为以进一步提高激光源的稳定性。
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公开(公告)号：US06181465B2
公开(公告)日：2001-01-30
申请号：US09286707
申请日：1999-04-05
IPC分类号： H01S330
CPC分类号： G02B6/03694 , G02B6/02 , G02B6/03627 , G02B6/03638 , H01S3/06708 , H01S3/0675 , H01S3/094003 , H01S3/10023 , H01S3/302
摘要： An optical fiber used as the active amplifying medium in a fiber laser is arranged to have a high insertion loss at an undesired frequency, while retaining a low insertion loss at a desired lasing frequency. In one embodiment, loss at a Raman-shifted frequency is introduced by using an optical fiber which has multiple claddings with an index profile that includes an elevated index region located away from the core, but within the evanescent coupling region of the core. A distributed loss, which can be enhanced by bending, is produced at the Raman frequency which effectively raises the threshold at which Raman scattering occurs in the fiber and therefore results in a frequency-selective fiber. In another embodiment, an absorbing layer is placed around the core region. The absorbing layer is chosen to have a sharp absorption edge so that it absorbs highly at the Raman-shifted wavelength, but minimally at the desired lasing wavelength. In still another embodiment, the optical fiber is constructed with a core with long period gratings formed therein. The gratings are fabricated with a periodicity selected to provide a relatively high insertion loss at the Raman frequency while simultaneously providing a relatively low insertion loss at the lasing frequency. In accordance with yet another embodiment, a bend loss technique is used to suppress amplified spontaneous emission at an unwanted wavelength due to a competing atomic energy level system in a fiber laser.
摘要翻译： 在光纤激光器中用作有源放大介质的光纤布置成在不期望的频率下具有高插入损耗，同时保持在期望的激光频率下的低插入损耗。 在一个实施例中，通过使用具有多个包层的光纤引入拉曼移位频率处的损耗，折射率分布包括位于远离芯的升高的折射率区域，但在核心的消逝耦合区域内。 可以在拉曼频率下产生可以通过弯曲增强的分布损耗，其有效地提高了在光纤中发生拉曼散射的阈值，因此导致频率选择性光纤。 在另一实施例中，吸收层围绕芯区域放置。 吸收层被选择为具有尖锐的吸收边缘，使得其以拉曼位移的波长高度吸收，但在期望的激光波长处最小。 在另一个实施例中，光纤由其中形成有长周期光栅的芯构成。 以选择的周期制造光栅，以在拉曼频率处提供相对高的插入损耗，同时在激光频率下提供相对低的插入损耗。 根据另一个实施例，弯曲损耗技术用于抑制由于光纤激光器中竞争的原子能级系统引起的不需要的波长的放大的自发发射。
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公开(公告)号：US5530709A
公开(公告)日：1996-06-25
申请号：US301544
申请日：1994-09-06
CPC分类号： G02B6/03638 , G02B6/03605 , G02B6/03633 , H01S3/06708 , H01S3/094003 , C03B2201/82 , C03B2203/12 , C03B2203/32 , G02B6/4204 , H01S3/06729 , H01S3/0675 , H01S3/094069 , H01S3/094092 , H01S3/0941 , H01S5/1064 , H01S5/4025
摘要： An upconversion fiber laser with a double-clad fiber is pumped with a laser-diode-based laser pump source, the inner cladding of the fiber forming a low transmission loss waveguide for the pump light. The central core of the fiber is doped with an active lasing ionic species capable of undergoing upconversion excitation, such as certain rare earth ionic species. The use of a double-clad fiber permits the use of high power, high brightness laser diodes, including those with broad emitting apertures, as well as high power diode laser pumped fiber lasers, as the pump source, thereby achieving higher pump intensities within the upconversion laser fiber and improved upconversion efficiency. Pump brightness can be further increased with multiple pump schemes which use multiple pump wavelengths in different absorption bands, multiple pump wavelengths within the same absorption band, pump light from pairs of cross-polarized sources, and pumping from both ends of the fiber.
摘要翻译： 具有双包层光纤的上转换光纤激光器用基于激光二极管的激光泵浦泵浦，纤维的内包层形成用于泵浦光的低传输损耗波导。 纤维的中心芯掺杂有能够经历上转换激发的活性激光离子物质，例如某些稀土离子物质。 使用双包层光纤允许使用大功率，高亮度激光二极管，包括具有广泛发射孔的激光二极管，以及作为泵浦源的大功率二极管激光泵浦光纤激光器，从而实现更高的泵浦强度 上转换激光光纤，提高转换效率。 泵浦亮度可以通过多种泵方案进一步提高，这些泵方案在不同吸收带内使用多个泵浦波长，在同一吸收带内的多个泵浦波长，来自成对的交叉极化源的泵浦光以及来自光纤两端的泵浦。
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公开(公告)号：US5440576A
公开(公告)日：1995-08-08
申请号：US229383
申请日：1994-04-18
申请人： David F. Welch , Robert J. Lang , Julian S. Osinski , Kenneth M. Dzurko , David G. Mehuys , Robert G. Waarts
发明人： David F. Welch , Robert J. Lang , Julian S. Osinski , Kenneth M. Dzurko , David G. Mehuys , Robert G. Waarts
CPC分类号： H01S5/4031 , H01S5/026 , H01S5/1064 , H01S5/50
摘要： A phased array of flared amplifiers fed by phase adjusters and a power splitter produces a single high power beam when the flared amplifier sections are aligned and closely spaced. In one embodiment the array is excited by a DBR laser integrated into the same substrate as the flared amplifiers. In another embodiment the array is self-excited and forms a laser between an edge of the substrate common to the power splitter and an edge of the substrate common to the flared amplifier.
摘要翻译： 当相位调节器和功率分配器馈送的相控放大器的相控阵列当扩张放大器部分对准并且紧密间隔时产生单个高功率光束。 在一个实施例中，阵列由与发射放大器集成在同一衬底中的DBR激光器激发。 在另一个实施例中，阵列是自激的，并且在功率分配器公共的衬底的边缘与扩张放大器公共的衬底的边缘之间形成激光。
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