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1. 发明授权

US5539571A Differentially pumped optical amplifer and mopa device 失效
标题翻译：差分泵浦光学放大器和mopa器件
公开(公告)号：US5539571A
公开(公告)日：1996-07-23
申请号：US202359
申请日：1994-02-28
申请人： David F. Welch , Donald R. Scifres , Robert G. Waarts , David G. Mehuys , Amos A. Hardy , Ross A. Parke
发明人： David F. Welch , Donald R. Scifres , Robert G. Waarts , David G. Mehuys , Amos A. Hardy , Ross A. Parke
IPC分类号： H01S5/026 , H01S5/042 , H01S5/062 , H01S5/10 , H01S5/12 , H01S5/125 , H01S5/16 , H01S5/187 , H01S5/20 , H01S5/50 , H01S3/00
CPC分类号： H01S5/0425 , H01S5/026 , H01S5/20 , H01S5/50 , H01S2301/163 , H01S2301/166 , H01S5/0267 , H01S5/0422 , H01S5/06243 , H01S5/1014 , H01S5/1053 , H01S5/1064 , H01S5/1085 , H01S5/12 , H01S5/125 , H01S5/16 , H01S5/187 , H01S5/2036 , H01S5/5018
摘要： An optical amplifier semiconductor device which is differentially pumped and a master oscillator power amplifier (MOPA) device employing such an amplifier. The amplifier allows the light propagating therein to diverge along at least part of its length, and may be a flared amplifier having a gain region that increases in width toward its output at a rate that equals or exceeds the divergence of the light. The amplifier is pumped with a current density at its input end which is smaller than the current density used to pump the output end for maintaining coherence of the beam to high power levels. Differential pumping may be both longitudinal and lateral within the amplifier. A single mode preamplifier section may be optically coupled to the input end of the amplifier. The amplifier input may have a width which is the same as or wider than that of the preamplifier output. The preamplifier may have a constant mode width or may be tapered to alter the divergence of the beams provided to the amplifier section. The laser oscillator in the MOPA device may be a single mode DBR laser diode monolithically integrated on the same substrate as the optical amplifier. Laser sources external to an amplifier chip may also be used. The input portion of the amplifier or the preamplifier section, if present, may be modulated. The laser oscillator might also be modulated if it has a high Q cavity. Tunable laser oscillators are also disclosed.
摘要翻译：差分泵浦的光放大器半导体器件和采用这种放大器的主振荡器功率放大器（MOPA）器件。放大器允许其中传播的光沿其长度的至少一部分发散，并且可以是具有增益区域的扩张放大器，该增益区域以等于或超过光的发散度的速率朝向其输出增加。放大器在其输入端以电流密度泵送，该电流密度小于用于泵浦输出端的电流密度，以将光束的相干性保持在高功率水平。差分泵浦可以在放大器内部纵向和横向两者。单模前置放大器部分可以光耦合到放大器的输入端。放大器输入可以具有与前置放大器输出的宽度相同或更宽的宽度。前置放大器可以具有恒定的模式宽度，或者可以是锥形的，以改变提供给放大器部分的光束的发散度。 MOPA器件中的激光振荡器可以是单模DBR激光二极管，其单片集成在与光放大器相同的衬底上。还可以使用放大器芯片外部的激光源。放大器或前置放大器部分的输入部分（如果存在）可以被调制。如果激光振荡器具有高Q腔，则也可能会被调制。还公开了可调谐激光振荡器。

2. 发明授权

US5255332A NxN Optical crossbar switch matrix 失效
标题翻译： NxN光交叉开关矩阵
公开(公告)号：US5255332A
公开(公告)日：1993-10-19
申请号：US915918
申请日：1992-07-16
申请人： David F. Welch , Donald R. Scifres , Robert G. Waarts , Amos A. Hardy , David G. Mehuys , Stephen O'Brien
发明人： David F. Welch , Donald R. Scifres , Robert G. Waarts , Amos A. Hardy , David G. Mehuys , Stephen O'Brien
IPC分类号： G02B6/28 , G02F1/017 , G02F1/313 , H04Q3/52 , H04Q11/00 , G02B6/36
CPC分类号： B82Y20/00 , G02B6/2804 , G02B6/2848 , G02F1/313 , G02F1/017 , G02F2201/305
摘要： An optical crossbar switch matrix for use in switching optical signals from a first set of optical fibers to a second set of optical fibers, in any order, which is characterized by having a matrix of rows and columns of diffraction gratings formed in a semiconductor heterostructure. Each grating is independently biased with either a forward or reverse bias voltage to switch the grating between a reflective state and a transmissive state. The gratings are oriented at an angle relative to the rows and columns so that when the Bragg condition for the light received from an optical film is met, a portion of the light is diffracted from the row in which it is propagating into a column toward another optical fiber. The heterostructure may include optical amplifiers to restore the optical signal to its original power level. Beam expanding, collimating and focussing optics may also be integrated into the heterostructure.
摘要翻译：一种用于将光信号从第一组光纤切换到第二组光纤的光学交叉开关矩阵，其特征在于具有在半导体异质结构中形成的行和列的衍射光栅的矩阵。每个光栅被独立地偏置有正向或反向偏置电压，以在反射状态和透射状态之间切换光栅。光栅相对于行和列以一定角度取向，使得当满足从光学膜接收的光的布拉格条件时，光的一部分从其正在传播到列的行衍射成另一个光纤。异质结构可以包括将光信号恢复到其原始功率电平的光放大器。光束扩展，准直和聚焦光学器件也可以整合到异质结构中。

3. 发明授权

US5159604A Antiguided semiconductor laser array with edge reflectors 失效
标题翻译：具有边缘反射器的反射半导体激光器阵列
公开(公告)号：US5159604A
公开(公告)日：1992-10-27
申请号：US737463
申请日：1991-07-29
申请人： David G. Mehuys , Amos A. Hardy , David F. Welch , Robert G. Waarts , Donald R. Scifres
发明人： David G. Mehuys , Amos A. Hardy , David F. Welch , Robert G. Waarts , Donald R. Scifres
IPC分类号： H01S5/40
CPC分类号： H01S5/4031
摘要： In a semiconductor laser array structure in which antiguided regions between high effective refractive index waveguide regions experience greater gain then the waveguide regions, structures introduced at the sides of the array, next to the edgemost waveguides and not on the array period, reflect laterally transmitted radiation back toward the center of the array. The edge reflecting structures may be waveguide regions having widths of (m'+1/2) half-wavelengths, where "m'" is zero or a positive integer, compared to array waveguides with width m, where "m" is an integer not necessarily equal to "m'". The edge reflecting structures may also be stacks of such waveguides, where the regions between the edge waveguides are of a width substantially equal to (n'+1/2) half-wavelengths, compared to antiguide element widths of n half-wavelengths. The two integers n and n' may be, but are not necessarily, equal. Alternatively, the edge reflectors can be mirrors fabricated at the side edges of the array or by disordering the active region beyond the edgemost waveguides to form a refractive index step. The mirrors should be positioned a distance substantially a/2 from the edgemost emitters, where "a" is the array period.
摘要翻译：在半导体激光器阵列结构中，其中高有效折射率波导区域之间的防护区域具有更大的增益，然后波导区域，引导在阵列侧面的结构，在边缘波导旁边，而不是阵列周期，反射横向透射辐射回到阵列的中心。与具有宽度m的阵列波导相比，边缘反射结构可以是宽度为（m'+ 1/2）半波长的波导区域，其中“m”为零或正整数，其中“m”为整数不一定等于“m”。边缘反射结构也可以是这样的波导的堆叠，其中边缘波导之间的区域的宽度基本上等于（n'+ 1/2）个半波长，与n个半波长的防卫元件宽度相比。两个整数n和n'可以是但并不一定相等。或者，边缘反射器可以是在阵列的侧边缘处制造的反射镜，或者通过使有源区域超出边缘波导的方式来形成折射率步骤。镜子应该与edgemost发射器的距离基本上为1/2，其中“a”是阵列周期。

4. 发明授权

US5440576A Branched MOPA device with phased array of amplifiers 失效
标题翻译：具有相控阵放大器的分支MOPA器件
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
IPC分类号： H01S5/026 , H01S5/10 , H01S5/40 , H01S5/50 , H01S3/10
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。

5. 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。

6. 发明授权

US5321718A Frequency converted laser diode and lens system therefor 失效
标题翻译：变频激光二极管及其透镜系统
公开(公告)号：US5321718A
公开(公告)日：1994-06-14
申请号：US10279
申请日：1993-01-28
申请人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
发明人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
IPC分类号： G02F1/37 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/12 , H01S5/14 , H01S5/187 , H01S5/40 , H01S5/50 , H01S3/08 , H01S3/10
CPC分类号： H01S5/50 , G02F1/37 , H01S5/0265 , H01S5/005 , H01S5/0092 , H01S5/026 , H01S5/06256 , H01S5/1064 , H01S5/1215 , H01S5/141 , H01S5/187 , H01S5/4025 , H01S5/4031 , H01S5/4068 , H01S5/4087
摘要： A compact semiconductor laser light source providing short wavelength (ultraviolet, blue or green) coherent light by means of frequency doubling of red or infrared light from a high power diode heterostructure. The high power diode heterostructure is a MOPA device having a single mode laser oscillator followed by a multimode, preferably flared, optical power amplifier. A tunable configuration having an external rear reflector grating could also be used. A lens could be integrated with the MOPA to laterally collimate the light before it is emitted. Straight or curved, surface emitting gratings could also be incorporated. An astigmatism-correcting lens system having at least one cylindrical lens surface is disposed in the path of the output from the MOPA to provide a beam with substantially equal lateral and transverse beam width dimensions and beam divergence angles. A nonlinear optical crystal or waveguide is placed in the path of the astigmatism-free symmetrized beam to double the frequency of the light. Single pass or multipass configurations with reflectors could be used, as well as external resonator and segmented, periodically poled waveguide configurations.
摘要翻译：一种紧凑的半导体激光光源，通过从高功率二极管异质结构的红色或红外光的倍频提供短波长（紫外线，蓝色或绿色）相干光。高功率二极管异质结构是具有单模激光振荡器的MOPA器件，其后是多模，优选为扩展的光功率放大器。也可以使用具有外部后反射器光栅的可调构造。透镜可以与MOPA集成，以在发射光之前对光进行横向准直。还可以结合直的或弯曲的表面发射光栅。具有至少一个柱面透镜表面的散光校正透镜系统设置在来自MOPA的输出的路径中，以提供具有基本相等的横向和横向波束宽度尺寸和光束发散角的光束。将非线性光学晶体或波导放置在无散光对称光束的路径中，将光的频率加倍。可以使用具有反射器的单通或多通道配置，以及外部谐振器和分段的周期性极化波导配置。

7. 发明授权

US5231642A Semiconductor ring and folded cavity lasers 失效
标题翻译：半导体环和折叠腔激光器
公开(公告)号：US5231642A
公开(公告)日：1993-07-27
申请号：US880681
申请日：1992-05-08
申请人： Donald R. Scifres , Kenneth M. Dzurko , Robert G. Waarts , David F. Welch , Amos Hardy , Stephen O'Brien
发明人： Donald R. Scifres , Kenneth M. Dzurko , Robert G. Waarts , David F. Welch , Amos Hardy , Stephen O'Brien
IPC分类号： H01S5/026 , H01S5/028 , H01S5/10 , H01S5/125 , H01S5/187 , H01S5/20 , H01S5/40 , H01S5/42 , H01S5/50
CPC分类号： H01S5/1032 , H01S5/1071 , H01S5/20 , H01S5/423 , H01S5/026 , H01S5/028 , H01S5/1243 , H01S5/125 , H01S5/187 , H01S5/2036 , H01S5/4075 , H01S5/42 , H01S5/50
摘要： A semiconductor laser that includes at least one grating reflector with a grating period selected to diffract at a nonperpendicular angle within the plane of the laser waveguide. This allows dispersal of laser light, eliminating filamentary multimode operation of broad area lasers. In one embodiment, the grating reflector couples light between a single transverse mode waveguide portion of the optical cavity and a second, broad area, portion that is not collinear with the single mode waveguide. In another embodiment, the cavity favors a ring mode of oscillation. One or more grating reflectors form part of the feedback mechanism which forms a resonant optical cavity with noncollinear portions. Other reflectors in the feedback mechanism include facet reflectors which can be cleaved or ion milled, or semiconductor material refractive index boundaries. Laser embodiments with two or more grating reflectors can be independently tuned to provide a high rate of amplitude modulation. Spatial beam deflection and wavelength tuning are also achieved. A stable unidirectional ring laser is also described. Multiple ring laser cavities can also be coupled together by partially reflecting grating reflectors to form a laser array.
摘要翻译：一种半导体激光器，其包括至少一个具有光栅周期的光栅反射器，所述光栅反射器被选择为在激光波导的平面内以非垂直角衍射。这允许分散激光，消除广域激光器的丝状多模操作。在一个实施例中，光栅反射器将光耦合在光腔的单个横模式波导部分与不与单模波导共线的第二宽区域部分之间耦合。在另一个实施例中，空腔有利于环形振荡模式。一个或多个光栅反射器形成反馈机构的一部分，其形成具有非共线部分的谐振光腔。反馈机构中的其他反射器包括可以被切割或离子研磨的面反射器，或半导体材料的折射率边界。具有两个或更多个光栅反射器的激光器实施例可以被独立地调谐以提供高的幅度调制率。还实现了空间光束偏转和波长调谐。还描述了稳定的单向环形激光器。多环激光腔也可以通过部分反射光栅反射器耦合在一起形成激光阵列。

8. 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。

9. 发明授权

US06298187B1 High power fiber gain media system achieved through power scaling via multiplexing 有权
标题翻译：通过多路复用功率缩放实现高功率光纤增益媒体系统
公开(公告)号：US06298187B1
公开(公告)日：2001-10-02
申请号：US09713671
申请日：2000-11-14
申请人： Robert G. Waarts , David F. Welch , Stephen G. Grubb , Jean-Luc Archambault , Donald R. Scifres
发明人： Robert G. Waarts , David F. Welch , Stephen G. Grubb , Jean-Luc Archambault , 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.
摘要翻译：通过复用具有不同波长，脉冲或极化工作模式的多个光纤增益源进行功率放大，可通过多个光纤增益源的多路复合组合来实现，以提供高功率输出，例如范围从几十瓦至几百瓦，单模或多模光纤。

10. 再颁专利

USRE35215E Frequency converted laser diode and lens system therefor 失效
标题翻译：变频激光二极管及其透镜系统
公开(公告)号：USRE35215E
公开(公告)日：1996-04-23
申请号：US307174
申请日：1994-09-16
申请人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
发明人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
IPC分类号： G02F1/37 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/12 , H01S5/14 , H01S5/187 , H01S5/40 , H01S5/50 , H01S3/08 , H01S3/10
CPC分类号： H01S5/50 , G02F1/37 , H01S5/0265 , H01S5/005 , H01S5/0092 , H01S5/026 , H01S5/06256 , H01S5/1064 , H01S5/1215 , H01S5/141 , H01S5/187 , H01S5/4025 , H01S5/4031 , H01S5/4068 , H01S5/4087
摘要： A compact semiconductor laser light source providing short wavelength (ultraviolet, blue or green) coherent light by means of frequency doubling of red or infrared light from a high power diode heterostructure. The high power diode heterostructure is a MOPA device having a single mode laser oscillator followed by a multimode, preferably flared, optical power amplifier. A tunable configuration having an external rear reflector grating could also be used. A lens could be integrated with the MOPA to laterally collimate the light before it is emitted. Straight or curved, surface emitting gratings could also be incorporated. An astigmatism-correcting lens system having at least one cylindrical lens surface is disposed in the path of the output from the MOPA to provide a beam with substantially equal lateral and transverse beam width dimensions and beam divergence angles. A nonlinear optical crystal or waveguide is placed in the path of the astigmatism-free symmetrized beam to double the frequency of the light. Single pass or multipass configurations with reflectors could be used, as well as external resonator and segmented, periodically poled waveguide configurations.
摘要翻译：一种紧凑的半导体激光光源，通过从高功率二极管异质结构的红色或红外光的倍频提供短波长（紫外线，蓝色或绿色）相干光。高功率二极管异质结构是具有单模激光振荡器的MOPA器件，其后是多模，优选为扩展的光功率放大器。也可以使用具有外部后反射器光栅的可调构造。透镜可以与MOPA集成，以在发射光之前对光进行横向准直。还可以结合直的或弯曲的表面发射光栅。具有至少一个柱面透镜表面的散光校正透镜系统设置在来自MOPA的输出的路径中，以提供具有基本相等的横向和横向波束宽度尺寸和光束发散角的光束。将非线性光学晶体或波导放置在无散光对称光束的路径中，将光的频率加倍。可以使用具有反射器的单通或多通道配置，以及外部谐振器和分段的周期性极化波导配置。

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