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51. 发明授权

US06411323B1 High power marking system achieved through power scaling via multiplexing 失效
标题翻译：通过多路复用功率缩放实现高功率标记系统
公开(公告)号：US06411323B1
公开(公告)日：2002-06-25
申请号：US09732477
申请日：2000-12-07
申请人： Robert G. Waarts , David F. Welch
发明人： Robert G. Waarts , David F. Welch
IPC分类号： B41J2700
CPC分类号： G02B6/29319 , H01S3/067 , H01S3/0675 , H01S3/094015 , H01S3/2383 , H01S3/2391 , H01S3/30 , H01S3/302 , H01S5/146 , H01S5/4012 , H01S5/4025 , H01S5/4031 , H04B10/291
摘要： Power scaling by multiplexing multiple fiber gain sources with different wave-lengths is useful in printing applications requiring higher optical powers to perform the printing function, such as through thermal inducement in thermal ablation, thermal fusion, thermal diffusion or thermal transfer. A marking system is disclosed using a plurality of laser sources operating at different wavelengths with their respective outputs coupled into a respective single mode fiber. At least one WDM combiner is coupled to receive and combine the laser source outputs into a single output. The combined power single output provides sufficient power intensity to induce thermal marking on a marking medium.
摘要翻译：通过复用具有不同波长的多个光纤增益源进行功率缩放在打印需要较高光功率以执行打印功能的应用中是有用的，例如通过热消融，热融合，热扩散或热传递中的热诱导。公开了使用以不同波长工作的多个激光源的标记系统，其各自的输出耦合到相应的单模光纤中。耦合至少一个WDM组合器以将激光源输出接收并组合成单个输出。组合功率单输出提供足够的功率强度以在标记介质上引起热标记。

52. 发明授权

US06407855B1 Multiple wavelength optical sources 有权
标题翻译：多波长光源
公开(公告)号：US06407855B1
公开(公告)日：2002-06-18
申请号：US09430394
申请日：1999-10-29
申请人： Stuart MacCormack , David M. Giltner , Vincent G. Dominic , Donald R. Scifres , Bardia Pezeshki , Edward C. Vail , Mehrdad Ziari , Robert G. Waarts
发明人： Stuart MacCormack , David M. Giltner , Vincent G. Dominic , Donald R. Scifres , Bardia Pezeshki , Edward C. Vail , Mehrdad Ziari , Robert G. Waarts
IPC分类号： H01S330
CPC分类号： H01S3/094 , H01S3/0675 , H01S3/08086 , H01S3/0812 , H01S3/094042 , H01S3/302
摘要： Optical pumping arrangements are provided for the broadband or multiple wavelength pumping of optical sources. Sources may be based on Raman gain media and may use multiple output couplers to couple out different wavelength ranges. Cascaded Raman resonator (CRR) configurations may also be used. Overlapping resonators at different wavelengths may be configured to share gain media, and may have separate portions in separate optical paths. Attenuation filters may also be used that are matched to the gain profile of a gain medium, to flatten the gain spectrum and allow equalization of gain to different output wavelengths. In one embodiment, polarization maintaining fiber is used to develop resonant conditions at different wavelengths in different polarization states. Wideband output gratings may be substituted for narrowband gratings to provide CRR configurations with a broader output band. Broadband amplification may also be provided by using a laser source operating in coherence collapse. The multiple wavelength pumping lends itself to a pumping arrangement in which sources at different wavelengths are combined into separate transmission/gain media such as the different fibers of an optical fiber cable.
摘要翻译：提供了用于光源的宽波长或多波长泵浦的光泵浦装置。源可以基于拉曼增益介质，并且可以使用多个输出耦合器耦合出不同的波长范围。也可以使用级联拉曼谐振器（CRR）。可以将不同波长的重叠谐振器配置成共享增益介质，并且可以在单独的光路中具有分离的部分。还可以使用与增益介质的增益曲线匹配的衰减滤波器，以平坦化增益谱，并允许将增益均衡到不同的输出波长。在一个实施例中，使用偏振保持光纤来发展不同偏振态的不同波长的谐振条件。宽带输出光栅可以代替窄带光栅，以提供具有更宽输出频带的CRR配置。也可以通过使用在相干塌陷中操作的激光源来提供宽带放大。多波长泵浦本身适用于泵送装置，其中将不同波长的源组合成单独的传输/增益介质，例如光纤电缆的不同光纤。

53. 发明授权

US06301271B1 Frequency conversion system 失效
标题翻译：变频系统
公开(公告)号：US06301271B1
公开(公告)日：2001-10-09
申请号：US09734629
申请日：2000-12-11
申请人： Steven Sanders , Robert G. Waarts
发明人： Steven Sanders , Robert G. Waarts
IPC分类号： H01S330
CPC分类号： G02F1/3534 , G02F1/3558 , G02F1/39 , G02F2001/3542 , G02F2001/3546 , G02F2001/3548
摘要： A frequency conversion system comprises first and second gain sources providing first and second frequency radiation outputs where the second gain source receives as input the output of the first gain source and, further, the second gain source comprises a Raman or Brillouin gain fiber for wave shifting a portion of the radiation of the first frequency output into second frequency radiation output to provided a combined output of first and second frequencies. Powers are gain enhanced by the addition of a rare earth amplifier or oscillator, or a Raman/Brillouin amplifier or oscillator between the high power source and the NFM device. Further, polarization conversion using Raman or Brillouin wavelength shifting is provided to optimize frequency conversion efficiency in the NFM device.
摘要翻译：一种变频系统包括提供第一和第二频率辐射输出的第一和第二增益源，其中第二增益源作为输入接收第一增益源的输出，此外，第二增益源包括用于波动的拉曼或布里渊增益光纤第一频率的辐射的一部分输出到第二频率辐射输出以提供第一和第二频率的组合输出。通过在高功率源和NFM器件之间添加稀土放大器或振荡器或拉曼/布里渊放大器或振荡器来增强功率。此外，提供使用拉曼或布里渊波长移位的偏振转换以优化NFM器件中的频率转换效率。

54. 发明授权

US06282016B1 Polarization maintaining fiber lasers and amplifiers 有权
标题翻译：极化保持光纤激光器和放大器
公开(公告)号：US06282016B1
公开(公告)日：2001-08-28
申请号：US09452250
申请日：1999-12-01
申请人： Stuart MacCormack , Robert G. Waarts , Paul Freeman , Stephen G. Grubb
发明人： Stuart MacCormack , Robert G. Waarts , Paul Freeman , Stephen G. Grubb
IPC分类号： H01S300
CPC分类号： H01S3/06758 , H01S3/0078 , H01S3/06712 , H01S3/0675 , H01S3/2316 , H01S3/2333
摘要： A number of variations are provided of a device that provides an amplified single polarization optical signal. Each of these relies on the use of a non-polarization maintaining gain medium through which the signal is directed, and a polarization shifter and reflector that direct the signal back through the same gain medium with a shifted polarization state. An input polarization beamsplitter directs the returning optical signal away to an output, based on its shifted polarization state. The embodiments of the invention include the use of double-clad fiber. Multiple stages may be used to provide specific amplification parameters. In particular, a fiber with a relatively large mode field diameter may be used to enable high pulse power applications. Wavelength selective components are used in certain embodiments of the invention, to allow for wavelength selectivity, as well as a single polarization state, in amplifiers, lasers and amplified spontaneous emission (ASE).
摘要翻译：提供了一种提供放大的单偏振光信号的装置的变型。这些都依赖于使用信号引导的非偏振维持增益介质，以及偏振移位器和反射器，其将信号通过具有偏移偏振状态的相同增益介质引导回来。输入偏振分束器基于其移动的偏振状态将返回光信号导向输出。本发明的实施例包括使用双包层光纤。可以使用多个阶段来提供特定的扩增参数。特别地，可以使用具有相对大的模场直径的光纤来实现高脉冲功率应用。在本发明的某些实施例中使用波长选择性分量，以便在放大器，激光器和放大的自发发射（ASE）中允许波长选择性以及单个极化状态。

55. 发明授权

US06275632B1 High power fiber gain media system achieved through power scaling via multiplexing 有权
公开(公告)号：US06275632B1
公开(公告)日：2001-08-14
申请号：US09724106
申请日：2000-11-25
申请人： Robert G. Waarts , David F. Welch , Stephen G. Grubb , Jean-Luc Archambault , Steven Sanders , Raymond Zanoni , Donald R. Scifres
发明人： Robert G. Waarts , David F. Welch , Stephen G. Grubb , Jean-Luc Archambault , Steven Sanders , Raymond Zanoni , Donald R. Scifres
IPC分类号： G02B634
CPC分类号： G02B6/29319 , H01S3/067 , H01S3/0675 , H01S3/094015 , H01S3/2383 , H01S3/2391 , H01S3/30 , H01S3/302 , H01S5/146 , H01S5/4012 , H01S5/4025 , H01S5/4031 , H04B10/291
摘要： Power scaling by multiplexing multiple fiber gain sources with different wavelengths, pulsing or polarization modes of operation is achieved through multiplex combining of the multiple fiber gain sources to provide high power outputs, such as ranging from tens of watts to hundreds of watts, provided on a single mode or multimode fiber.

56. 发明授权

US6081369A Fiber amplifiers and pumping sources for fiber amplifiers 有权
标题翻译：光纤放大器和光纤放大器的泵浦源
公开(公告)号：US6081369A
公开(公告)日：2000-06-27
申请号：US365582
申请日：1999-08-02
申请人： Robert G. Waarts , Steven Sanders , David F. Welch
发明人： Robert G. Waarts , Steven Sanders , David F. Welch
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/131 , H01S3/23 , H01S3/00
CPC分类号： H01S3/094003 , H01S3/06754 , H01S3/06758 , H01S2301/02 , H01S3/06729 , H01S3/06787 , H01S3/094026 , H01S3/094042 , H01S3/094076 , H01S3/094096 , H01S3/09415 , H01S3/1301
摘要： An optical amplifier system includes a fiber amplifier doped with rare earth dopant provided in its fiber core. A plurality of fiber lasers have their light outputs optically coupled together for launching into the fiber amplifier for optically pumping the amplifier. Each of the fiber lasers have a rare earth dopant provided in its fiber core for stimulated lasing emission with the rare earth dopant of the fiber amplifier being different from the rear earth dopant of the fiber lasers. A reflector may be provided in each of the coupling fibers for reflecting a portion of the respective light outputs back into the fiber lasers to control their wavelength of operation, the wavelength of operation of the reflectors chosen to be within a high absorption region of the absorption band of the fiber amplifier. Where the pump source is a semiconductor laser source, the source may include a flared gain section to increase the output intensity of the light output of the source.
摘要翻译：光放大器系统包括在其光纤芯中提供的掺杂有稀土掺杂剂的光纤放大器。多个光纤激光器具有光输出光耦合在一起，用于发射到光纤放大器中，用于光学泵浦放大器。每个光纤激光器在其光纤芯中具有稀土掺杂剂，用于受激发射的激光发射，光纤放大器的稀土掺杂剂不同于光纤激光器的背面掺杂剂。可以在每个耦合光纤中设置反射器，用于将各个光输出的一部分反射回光纤激光器，以控制它们的工作波长，反射器的工作波长选择在吸收的高吸收区域内光纤放大器的带。在泵浦源是半导体激光源的情况下，源可以包括扩张增益部分，以增加源的光输出的输出强度。

57. 发明授权

US6021141A Tunable blue laser diode 失效
标题翻译：可调蓝色激光二极管
公开(公告)号：US6021141A
公开(公告)日：2000-02-01
申请号：US808737
申请日：1997-02-28
申请人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
发明人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
IPC分类号： H01S5/02 , H01S3/10
CPC分类号： H01S5/02
摘要： A harmonic generator laser system which features a distributed Bragg reflector (DBR) or distributed feedback (DFB) tunable diode laser coupled to a quasi-phase matched (QPM) waveguide of optically nonlinear material. Tuning of the DBR laser may be achieved either thermally or via current injection, or both, halving the wavelength of a red laser into the visible blue spectral band. Thermal tuning may provide a coarse tuning adjustment, while injected current may provide fine tuning accessible to a user. Separately or in combination with current tuning, a modulation signal may be applied to the DBR laser for achieving an intensity modulated or a pulsed output. In another embodiment, modulation may be achieved by frequency modulation of the laser. A very compact tunable blue laser is formed. In yet another embodiment a double clad fiber amplifier is disposed between the tunable laser and the waveguide. The fiber amplifier is pumped by a high power laser, while the core guides light to be frequency doubled in the nonlinear material from a continuously tunable laser.
摘要翻译：一种谐波发生器激光系统，其特征在于耦合到光学非线性材料的准相位匹配（QPM）波导的分布式布拉格反射器（DBR）或分布式反馈（DFB）可调谐二极管激光器。 DBR激光器的调谐可以通过热或通过电流注入或二者实现，将红色激光器的波长减半成可见蓝色光谱带。热调谐可以提供粗调谐调节，而注入的电流可以提供用户可访问的微调。单独地或结合当前调谐，调制信号可以被施加到DBR激光器以实现强度调制或脉冲输出。在另一个实施例中，可以通过激光器的频率调制实现调制。形成非常紧凑的可调谐蓝色激光。在又一实施例中，双包层光纤放大器设置在可调激光器和波导之间。光纤放大器由大功率激光器泵浦，核心引导来自连续可调激光器的非线性材料中的频率倍增的光。

58. 发明授权

US5933271A Optical amplifiers providing high peak powers with high energy levels 失效
标题翻译：提供高能量高峰值功率的光放大器
公开(公告)号：US5933271A
公开(公告)日：1999-08-03
申请号：US17532
申请日：1998-02-02
申请人： Robert G. Waarts , Steven Sanders , David F. Welch
发明人： Robert G. Waarts , Steven Sanders , David F. Welch
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/131 , H01S3/23 , H01S3/00
CPC分类号： H01S3/094003 , H01S3/06754 , H01S3/06758 , H01S2301/02 , H01S3/06729 , H01S3/06787 , H01S3/094026 , H01S3/094042 , H01S3/094076 , H01S3/094096 , H01S3/09415 , H01S3/1301
摘要： Two approaches are provided for achieving an optical amplifier system capable of producing high peak power, high energy pulse outputs while suppressing scattering noise. The first approach relates to an optical amplifier system which has at least one laser diode pulsed or cw pumped double clad fiber amplifier utilized for receiving a high frequency modulated injected signal pulse of short duration from the laser diode, via the fiber core, for amplification by coupling pump light into the inner cladding of the fiber. The average signal power is sufficient to saturate the gain of the fiber so as to minimize significant onset and buildup of forward and backward scattering noise. The duty cycle of the injected signal source pulse is chosen to allow adequate gain recovery in the fiber amplifier between pulses. The second approach relates to a cascaded optical amplifier system having at least two optical amplifying stages with two pulsed pump sources providing and two amplifying media, the first of which receives the injection and at least one pump signal wherein the injection pulsed signal is amplified to a first power and energy level. The second amplifying medium, optically coupled to the first, amplifies the first level signal to a second level amplified, injection pulsed signal. The duty cycle of the injection pulsed optical signal is synchronized with the first and second pulsed pump signals with the first pulsed pump signal having a different duration in the duty cycle than the second pulsed pump signal.
摘要翻译：提供两种方法来实现能够产生高峰值功率，高能量脉冲输出同时抑制散射噪声的光放大器系统。第一种方法涉及一种光放大器系统，其具有至少一个激光二极管脉冲或双泵浦双包层光纤放大器，用于经由光纤芯从激光二极管接收短持续时间的高频调制注入信号脉冲，以便通过光纤芯放大将泵浦光耦合到光纤的内包层中。平均信号功率足以使光纤的增益饱和，从而最小化正向和反向散射噪声的显着开始和累积。选择注入的信号源脉冲的占空比以允许在脉冲之间的光纤放大器中的足够的增益恢复。第二种方法涉及具有至少两个具有两个脉冲泵浦源的光放大级的级联光放大器系统和两个放大介质，其中第一个放大介质接收注入和至少一个泵浦信号，其中将注入脉冲信号放大到第一电力和能源水平。光耦合到第一放大介质的第二放大介质将第一电平信号放大到第二电平放大的注入脉冲信号。注入脉冲光信号的占空比与第一和第二脉冲泵浦信号同步，其中第一脉冲泵浦信号在占空比上具有与第二脉冲泵浦信号不同的持续时间。

59. 发明授权

US5867305A Optical amplifier with high energy levels systems providing high peak powers 失效
标题翻译：具有高能级系统的光放大器提供高峰值功率
公开(公告)号：US5867305A
公开(公告)日：1999-02-02
申请号：US588747
申请日：1996-01-19
申请人： Robert G. Waarts , Steven Sanders , David F. Welch , Donals R. Scifres
发明人： Robert G. Waarts , Steven Sanders , David F. Welch , Donals R. Scifres
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/131 , H01S3/23
CPC分类号： H01S3/094003 , H01S3/06754 , H01S3/06758 , H01S2301/02 , H01S3/06729 , H01S3/06787 , H01S3/094026 , H01S3/094042 , H01S3/094076 , H01S3/094096 , H01S3/09415 , H01S3/1301
摘要： Two approaches are provided for achieving an optical amplifier system capable of producing high peak power, high energy pulse outputs while suppressing scattering noise. The first approach relates to an optical amplifier system which has at least one laser diode pulsed or cw pumped double clad fiber amplifier utilized for receiving a high frequency modulated injected signal pulse of short duration from the laser diode, via the fiber core, for amplification by coupling pump light into the inner cladding of the fiber. The average signal power is sufficient to saturate the gain of the fiber so as to minimize significant onset and buildup of forward and backward scattering noise. The duty cycle of the injected signal source pulse is chosen to allow adequate gain recovery in the fiber amplifier between pulses. The second approach relates to a cascaded optical amplifier system having at least two optical amplifying stages with two pulsed pump sources providing and two amplifying media, the first of which receives the injection and at least one pump signal wherein the injection pulsed signal is amplified to a first power and energy level. The second amplifying medium, optically coupled to the first, amplifies the first level signal to a second level amplified, injection pulsed signal. The duty cycle of the injection pulsed optical signal is synchronized with the first and second pulsed pump signals with the first pulsed pump signal having a different duration in the duty cycle than the second pulsed pump signal.
摘要翻译：提供两种方法来实现能够产生高峰值功率，高能量脉冲输出同时抑制散射噪声的光放大器系统。第一种方法涉及一种光放大器系统，其具有至少一个激光二极管脉冲或双泵浦双包层光纤放大器，用于经由光纤芯从激光二极管接收短持续时间的高频调制注入信号脉冲，以便通过光纤芯放大将泵浦光耦合到光纤的内包层中。平均信号功率足以使光纤的增益饱和，从而最小化正向和反向散射噪声的显着开始和累积。选择注入的信号源脉冲的占空比以允许在脉冲之间的光纤放大器中的足够的增益恢复。第二种方法涉及具有至少两个具有两个脉冲泵浦源的光放大级的级联光放大器系统和两个放大介质，其中第一个放大介质接收注入和至少一个泵浦信号，其中将注入脉冲信号放大到第一电力和能源水平。光耦合到第一放大介质的第二放大介质将第一电平信号放大到第二电平放大的注入脉冲信号。注入脉冲光信号的占空比与第一和第二脉冲泵浦信号同步，其中第一脉冲泵浦信号在占空比上具有与第二脉冲泵浦信号不同的持续时间。

60. 发明授权

US5644584A Tunable blue laser diode 失效
标题翻译：可调蓝色激光二极管
公开(公告)号：US5644584A
公开(公告)日：1997-07-01
申请号：US625781
申请日：1996-03-29
申请人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
发明人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
IPC分类号： G02F1/37 , G02F1/35 , G02F1/377 , H01S3/067 , H01S5/00 , H01S5/022 , H01S5/024 , H01S5/06 , H01S5/0687 , H01S5/12 , H01S5/125 , H01S3/10
CPC分类号： H01S5/02415 , H01S5/02248 , H01S5/0687 , G02F1/377 , G02F2001/3548 , H01S3/0092 , H01S3/06754 , H01S3/09415 , H01S3/2375 , H01S5/0092 , H01S5/02446 , H01S5/0612 , H01S5/06256 , H01S5/4087
摘要： A harmonic generator laser system which features a distributed Bragg reflector (DBR) or distributed feedback (DFB) tunable diode laser coupled to a quasi-phasematched (QPM) waveguide of optically nonlinear material. Tuning of the DBR laser may be achieved either thermally or via current injection, or both, halving the wavelength of a red laser into the visible blue spectral band. Thermal tuning may provide a coarse tuning adjustment, while injected current may provide fine tuning accessible to a user. Separately or in combination with current tuning, a modulation signal may be applied to the DBR laser for achieving an intensity modulated or a pulsed output. In another embodiment, modulation may be achieved by frequency modulation of the laser. A very compact tunable blue laser is formed. In yet another embodiment a double clad fiber amplifier is disposed between the tunable laser and the waveguide. The fiber amplifier is pumped by a high power laser, while the core guides light to be frequency doubled in the nonlinear material from a continuously tunable laser.
摘要翻译：一种谐波发生器激光系统，其特征在于耦合到光学非线性材料的准相位（QPM）波导的分布式布拉格反射器（DBR）或分布式反馈（DFB）可调谐二极管激光器。 DBR激光器的调谐可以通过热或通过电流注入或二者实现，将红色激光器的波长减半成可见蓝色光谱带。热调谐可以提供粗调谐调节，而注入的电流可以提供用户可访问的微调。单独地或结合当前调谐，调制信号可以被施加到DBR激光器以实现强度调制或脉冲输出。在另一个实施例中，可以通过激光器的频率调制实现调制。形成非常紧凑的可调谐蓝色激光。在又一实施例中，双包层光纤放大器设置在可调激光器和波导之间。光纤放大器由大功率激光器泵浦，核心引导来自连续可调激光器的非线性材料中的频率倍增的光。

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