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1. 发明授权

US5677920A Upconversion fiber laser 失效
标题翻译：上变频光纤激光器
公开(公告)号：US5677920A
公开(公告)日：1997-10-14
申请号：US572029
申请日：1995-12-14
申请人： Robert G. Waarts , David F. Welch , Steven Sanders , Donald R. Scifres
发明人： Robert G. Waarts , David F. Welch , Steven Sanders , Donald R. Scifres
IPC分类号： G02B6/036 , G02B6/42 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S5/10 , H01S5/40 , H01S3/30
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 uses a pump source which may be another fiber laser, such as a high power, diode-laser-pumped, fiber laser. The upconversion fiber laser includes an optical fiber whose core region is doped with an active lasing ionic species capable when optically pumped of undergoing upconversion excitation, such as certain rare earth ionic species, and which is embedded in a cladding of the optical fiber. Use of a fiber pump laser can improve coupling of pump light into the optical fiber, thereby achieving higher pump intensities in the core region and improved upconversion efficiency. The upconversion fiber laser's resonant laser cavity is defined by feedback means which can include at least one reflective grating formed in the optical fiber, as well as a reflective end face of the optical fiber. Any portion of the optical fiber that lies outside of the resonant laser cavity, such as any portion beyond the integral reflective grating, may act as an optical power amplifier for the upconverted laser output. The disclosure includes other embodiments in which pump brightness can be further increased with multiple pump sources.
摘要翻译：上转换光纤激光器使用可以是另一种光纤激光器的泵浦源，例如高功率，二极管激光泵浦的光纤激光器。上转换光纤激光器包括光纤，其核心区域掺杂有当被泵浦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，并且嵌入在光纤的包层中。使用纤维泵浦激光器可以改善泵浦光与光纤的耦合，从而在芯区域实现更高的泵浦强度，并提高上转换效率。上变频光纤激光器的谐振激光腔由反射装置限定，该反馈装置可以包括形成在光纤中的至少一个反射光栅以及光纤的反射端面。位于谐振激光腔外部的光纤的任何部分，例如整个反射光栅之外的任何部分，都可以作为上变频激光输出的光功率放大器。本公开包括其中可以使用多个泵浦源进一步增加泵亮度的其他实施例。

2. 发明授权

US5530709A Double-clad upconversion fiber laser 失效
标题翻译：双层上转换光纤激光器
公开(公告)号：US5530709A
公开(公告)日：1996-06-25
申请号：US301544
申请日：1994-09-06
申请人： Robert G. Waarts , David F. Welch , Steven Sanders , Donald R. Scifres
发明人： Robert G. Waarts , David F. Welch , Steven Sanders , Donald R. Scifres
IPC分类号： G02B6/036 , G02B6/42 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S5/10 , H01S5/40 , H01S3/30
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。

3. 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.

4. 发明授权

US06212310B1 High power fiber gain media system achieved through power scaling via multiplexing 失效
公开(公告)号：US06212310B1
公开(公告)日：2001-04-03
申请号：US08955883
申请日：1997-10-21
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： G02B628
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.

5. 发明授权

US5657153A Optical amplifier with complementary modulation signal inputs 失效
标题翻译：具有互补调制信号输入的光放大器
公开(公告)号：US5657153A
公开(公告)日：1997-08-12
申请号：US408030
申请日：1995-03-21
申请人： John Endriz , David F. Welch , Robert G. Waarts , Steven Sanders , Donald R. Scifres
发明人： John Endriz , David F. Welch , Robert G. Waarts , Steven Sanders , Donald R. Scifres
IPC分类号： H04B10/17 , H01S3/00 , H04B10/04
CPC分类号： H04B10/291 , H04B10/2912 , H01S3/005 , H01S3/06712 , H01S3/06754 , H01S3/10015 , H01S3/2383 , H01S5/06216 , H01S5/4087
摘要： In an optical transmission medium, such as a fiber amplifier, two optically distinguishable signals with complementary modulation are both inputted into the amplifying medium for encoding information, particularly a serial stream of digital data, or alternatively, redundant encoding of pulses. The gain profile in the medium is preferably maintained approximately constant at all times, so that whichever amplified signal is used as the primary information carrier, its output intensity will be substantially stable from pulse to pulse, independent of recent pulse history. The two complementary signals may have different orthogonal linear polarizations or wavelengths with the same stimulated emission cross-section, so that the population inversion profile stays constant, whichever signal happens to be on at a given moment. The two signals may be derived from separate intensity modulated laser diode signal sources, from a single laser diode signal source switched between two emission wavelengths, or from a single laser diode with constant emission coupled to a directional coupler directing two complementary polarized light signals into the fiber amplifying medium.
摘要翻译：在诸如光纤放大器的光传输介质中，具有互补调制的两个光学可区分信号都被输入到用于对信息进行编码的放大媒体，特别是串行数字数据流，或备选地，脉冲的冗余编码。介质中的增益分布优选总是保持近似恒定，因此无论使用哪个放大信号作为主信息载体，其输出强度将基本上与脉冲相比稳定，与最近的脉冲历史无关。两个互补信号可以具有不同的具有相同受激发射横截面的正交线性偏振或波长，使得群体反转谱保持恒定，无论哪个信号在给定时刻发生什么信号。两个信号可以从单独的强度调制的激光二极管信号源获得，来自在两个发射波长之间切换的单个激光二极管信号源，或者来自具有恒定发射的单个激光二极管耦合到定向耦合器，其将两个互补偏振光信号引入到光纤放大介质。

6. 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。

7. 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。

8. 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。

9. 发明授权

US06477295B1 Pump coupling of double clad fibers 有权
标题翻译：双包层纤维的泵耦合
公开(公告)号：US06477295B1
公开(公告)日：2002-11-05
申请号：US09488166
申请日：2000-01-20
申请人： Robert J. Lang , Robert G. Waarts , Ian J. Booth , David M. Giltner , Steven Sanders
发明人： Robert J. Lang , Robert G. Waarts , Ian J. Booth , David M. Giltner , Steven Sanders
IPC分类号： G02B626
CPC分类号： G02B6/2848 , G02B6/02042 , G02B6/03633 , G02B6/2817 , G02B6/2852 , H01S3/094003 , H01S3/094007 , H01S3/094019
摘要： Apparatus for coupling light into a fiber, such as a double clad fiber (DCF) having a core having a refractive index n1, surrounded by an inner cladding having refractive index n2 which is surrounded by an outer cladding having a refractive index n3, where n1>n2>n3. An optical coupler medium, referred to as a Fiber Space Division Multiplexor or FSDM, is formed on an exposed portion of the fiber inner cladding at a position along the length of the fiber without interfering with the continuity of its core and provides at, at least one position, the imaging of light external of the fiber into the inner cladding interface and its waveguiding with the inner cladding of the fiber. The FSDM coupler comprises an optical material in optical contact or integrated with the inner cladding and having a refractive index substantially equal to n2. The coupler medium may also be employed with a fiber having no core and where the inner cladding would function as a multimode core. Also, disclosed are formed reflectors for reflecting back residual, unabsorbed pump light backward into the DCF inner cladding for absorption within the core doped with a rare earth active material. Other embodiments provided for the removal of pump light from the DCF inner cladding.
摘要翻译：用于将光耦合到光纤中的装置，例如具有折射率为n1的芯的双包层光纤（DCF），由具有折射率n3的外包层围绕的具有折射率n2的内包层围绕，其中n1 > n2> n3。称为光纤空间分割多路复用器或FSDM的光耦合器介质在纤维内包层的沿着光纤长度的位置的暴露部分上形成，而不干扰其芯的连续性，并至少提供一个位置，将光纤的外部成像到内包层界面中，并且其与纤维的内包层的波导成像。 FSDM耦合器包括光学接触的光学材料或与内部包层整体并具有基本上等于n2的折射率。耦合介质也可以与不具有芯的纤维一起使用，并且内包层将用作多模芯。此外，公开了反射器，用于将残留的未吸收的泵浦光反射回到DCF内包层中，用于在掺杂有稀土活性材料的芯内吸收。提供用于从DCF内包层去除泵浦光的其它实施例。

10. 发明授权

US06301273B1 Power enhanced frequency conversion system 失效
标题翻译：功率增强变频系统
公开(公告)号：US06301273B1
公开(公告)日：2001-10-09
申请号：US09734865
申请日：2000-12-11
申请人： Steven Sanders , Robert J. Lang , Robert G. Waarts
发明人： Steven Sanders , Robert J. Lang , 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 includes at least one source providing a first near-IR wavelength output including a gain medium for providing high power amplification, such as double clad fiber amplifier, a double clad fiber laser or a semiconductor tapered amplifier to enhance the power output level of the near-IR wavelength output. The NFM device may be a difference frequency mixing (DFM) device or an optical parametric oscillation (OPO) device. Pump powers are gain enhanced by the addition of a rare earth amplifier or oscillator, or a Ra-man/Brillouin amplifier or oscillator between the high power source and the NFM device.
摘要翻译：变频系统包括至少一个源，其提供包括用于提供高功率放大的增益介质的第一近红外波长输出，例如双包层光纤放大器，双包层光纤激光器或半导体锥形放大器，以增强功率输出电平的近红外波长输出。 NFM装置可以是差分混频（DFM）装置或光参量振荡（OPO）装置。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Ra-man / Brillouin放大器或振荡器来增加泵浦功率。

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