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11. 发明授权

US06845111B2 Laser apparatus with improved thermal stress resistance 失效
标题翻译：具有改善耐热应力的激光设备
公开(公告)号：US06845111B2
公开(公告)日：2005-01-18
申请号：US10383384
申请日：2003-03-06
申请人： David S. Sumida , Hans W. Bruesselbach
发明人： David S. Sumida , Hans W. Bruesselbach
IPC分类号： H01S3/02 , H01S3/042 , H01S3/06 , H01S3/16 , H01S3/00
CPC分类号： H01S3/0612 , H01S3/0405 , H01S3/042 , H01S3/0604 , H01S3/1638 , H01S3/1673
摘要： A laser apparatus, comprising a layer fabricated of a lasing medium, the layer having a top surface and a bottom surface, and a first substrate layer fabricated of a laser-inactive material, the first substrate being diffusion-bonded to the layer of lasing medium, wherein the lasing medium comprises a crystalline, polycrystalline or glass material doped with ions. The lasing medium selected for fabrication of the laser apparatus of this invention comprises neodymium-doped yttrium vanadate material and laser-inactive material of the substrate comprises an yttrium-aluminate or yttrium vanadate material. The layers of material are oriented so that the thermal expansion coefficients along the crystallographic axes of the materials match or nearly match.
摘要翻译：一种激光装置，包括由激光介质制成的层，所述层具有顶表面和底表面，以及由激光非活性材料制成的第一衬底层，所述第一衬底被扩散连接到激光介质层，其中激光介质包括掺杂有离子的结晶，多晶或玻璃材料。选择用于制造本发明的激光装置的激光介质包括钕掺杂的钒酸钇材料，并且基板的激光非活性材料包括铝酸钇或钒酸钇材料。材料层被定向成使得沿着材料的结晶轴的热膨胀系数匹配或接近匹配。

12. 发明授权

US06646793B2 High gain laser amplifier 有权
标题翻译：高增益激光放大器
公开(公告)号：US06646793B2
公开(公告)日：2003-11-11
申请号：US09736997
申请日：2000-12-14
申请人： Hans W. Bruesselbach , Alexander A. Betin , David S. Sumida
发明人： Hans W. Bruesselbach , Alexander A. Betin , David S. Sumida
IPC分类号： H01S300
CPC分类号： H01S3/063 , H01S3/0602 , H01S3/0612 , H01S3/0617 , H01S3/1618 , H01S3/1643
摘要： A high gain optical amplifier and method. Generally, the inventive amplifier includes a first crystal having an axis and a first index of refraction and a second crystal bonded to the first crystal about the axis and having a second index of refraction. The first index is higher than the second index such that light through the first crystal is totally internally reflected. In the illustrative embodiment, the first crystal is Yb:YAG with an index of approximately 1.82, the second crystal is Sapphire with an index of approximately 1.78, and the axis is the propagation axis. The invention is, in its preferred embodiment, a light guide fabricated out of crystalline materials, diffusion bonded together. If the core of the light guide is doped with laser ions, high gain amplifiers made be designed and operable over a large étendue. With a judicious choice of the laser crystal and cladding materials, shape, and bonding technique, the guided amplifier is much less susceptible to parasitic oscillation than amplifiers constructed in accordance with conventional teachings. The clad core is also able to handle larger thermal load without breakage than can an unclad core.
摘要翻译：高增益光放大器和方法。通常，本发明的放大器包括具有轴和第一折射率的第一晶体，以及围绕轴线键合到第一晶体并具有第二折射率的第二晶体。第一指数高于第二指数，使得通过第一晶体的光完全内部反射。在说明性实施例中，第一晶体为Yb：YAG，折射率约为1.82，第二晶体为蓝宝石，折射率约为1.78，轴为传播轴。在其优选实施例中，本发明是由结晶材料制成的光导，扩散结合在一起。如果光导的核心掺杂有激光离子，则高增益放大器可以在大的衰减范围内设计和操作。通过明智地选择激光晶体和包层材料，形状和结合技术，与根据常规教导构建的放大器相比，引导放大器不太容易发生寄生振荡。包芯可以处理较大的热负载，而不会破损。

13. 发明授权

US5974061A Laser pump cavity apparatus with improved thermal lensing control, cooling, and fracture strength and method 失效
$Laser pump cavity apparatus with improved thermal lensing control, cooling, and fracture strength and method$
标题翻译：激光泵腔设备具有改进的热透镜控制，冷却和断裂强度和方法
公开(公告)号：US5974061A
公开(公告)日：1999-10-26
申请号：US994423
申请日：1997-12-19
申请人： Robert W. Byren , David S. Sumida , Hans W. Bruesselbach
发明人： Robert W. Byren , David S. Sumida , Hans W. Bruesselbach
IPC分类号： H01S3/042 , H01S3/06 , H01S3/08 , H01S3/094 , H01S3/0941 , H01S3/04
CPC分类号： H01S3/094 , H01S3/0941 , H01S3/042 , H01S3/0606 , H01S3/0612 , H01S3/08072 , H01S3/08095 , H01S3/094084
摘要： A laser pump cavity apparatus with integral concentrator provides improved thermal lensing control, cooling and fracture strength. The concentrator is formed around a doped solid-state laser medium by diffusion bonding, using a material different than the doped laser medium and with a substantially lower index of refraction, higher thermal conductivity and higher stress fracture strength than the doped laser crystal. The concentrator has a top cladding layer with a cylindrical focusing surface and a bottom cladding layer with a cylindrical focusing surface and may have edge cladding layers. Cold plates, each of which also has one cylindrical surface, are placed in thermal contact with the cylindrical surfaces of the top and bottom cladding layers. The cylindrical surfaces preferably have hyperbolic or quasi-hyperbolic shape. The laser pump cavity apparatus is preferably pumped with several laser diode arrays in directions transverse to a laser beam axis. The pumplight is injected from the laser diode arrays through the edge cladding layers in directions toward line foci of the cylindrical surfaces. The concentrator top and bottom cladding material is preferably sapphire and the doped solid-state laser medium is preferably Yb:YAG. The edge cladding layers are preferably thermally insulating to maintain a one-dimensional heat flow condition within the doped laser medium, by forming them of a material that has lower thermal conductivity than the material used for the top and bottom cladding layers. The edge cladding layers are preferably made of undoped YAG material
摘要翻译：具有整体浓缩器的激光泵腔设备提供改进的热透镜控制，冷却和断裂强度。集中器通过扩散接合形成在掺杂的固态激光介质周围，使用与掺杂的激光介质不同的材料，并且具有比掺杂的激光晶体低得多的折射率，更高的热导率和更高的应力断裂强度。集中器具有具有圆柱形聚焦表面的顶部包层和具有圆柱形聚焦表面的底部包层，并且可以具有边缘包覆层。它们中的每一个也具有一个圆柱形表面，与顶部和底部包层的圆柱形表面热接触。圆柱形表面优选具有双曲线或准双曲线形状。激光泵腔装置优选地在与激光束轴线横切的方向上用几个激光二极管阵列泵送。该激光二极管阵列沿着朝向圆柱形表面的线焦点的方向通过边缘包覆层注入。集中器顶部和底部包层材料优选是蓝宝石，并且掺杂的固态激光介质优选为Yb：YAG。边缘覆层优选是隔热的，以通过形成具有比用于顶部和底部包层的材料低的导热性的材料来保持掺杂的激光介质内的一维热流条件。边缘覆层优选由未掺杂的YAG材料制成

14. 发明申请

US20100226407A1 LASER MEDIA WITH CONTROLLED CONCENTRATION PROFILE OF ACTIVE LASER IONS AND METHOD OF MAKING THE SAME 有权
标题翻译：具有主动激光离子控制浓度分布的激光介质及其制造方法
公开(公告)号：US20100226407A1
公开(公告)日：2010-09-09
申请号：US12397082
申请日：2009-03-03
申请人： Kevin W. Kirby , David S. Sumida
发明人： Kevin W. Kirby , David S. Sumida
IPC分类号： H01S3/14 , H01L21/00
CPC分类号： H01S3/0617 , C30B29/28 , C30B31/08 , C30B31/18 , H01S3/061 , H01S3/08045 , H01S3/1618 , H01S3/1643
摘要： A laser medium comprises a solid-state host material and dopant species provided within the solid-state host material. A first portion of the dopant species has a first valence state, and a second portion of the dopant species has a second valence state. In an embodiment, a concentration of the first portion of the dopant species decreases radially with increasing distance from a center of the medium, and a concentration of the second portion of the dopant species increases radially with increasing distance from the center of the medium. The laser medium further comprises impurities within the solid-state host material, the impurities converting the first portion of the dopant species having the first valence state into the second portion of dopant species having the second valence state.
摘要翻译：激光介质包括固态主体材料和设置在固态主体材料内的掺杂物质。掺杂剂物质的第一部分具有第一价态，并且掺杂剂物质的第二部分具有第二价态。在一个实施方案中，掺杂剂物质的第一部分的浓度随着距离介质中心的距离增加而径向减小，并且掺杂剂物质的第二部分的浓度随着距离介质中心的距离增加而径向增加。激光介质还包括在固态主体材料内的杂质，杂质将具有第一价态的掺杂物种的第一部分转化成具有第二价态的掺杂物种的第二部分。

15. 发明授权

US07633981B2 Reverse oxidation post-growth process for tailored gain profile in solid-state devices 有权
标题翻译：反向氧化后生长过程，用于固态器件中定制的增益曲线
公开(公告)号：US07633981B2
公开(公告)日：2009-12-15
申请号：US11584695
申请日：2006-10-20
申请人： David S. Sumida , Kevin W. Kirby
发明人： David S. Sumida , Kevin W. Kirby
IPC分类号： H01S3/14
CPC分类号： C30B31/00 , C30B29/20 , C30B33/005 , H01S3/061 , H01S3/0617 , H01S3/1618 , H01S3/1643
摘要： A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of active substitutional ions that is relatively high at the center of the rod and decreases to the surface of the rod. The laser rod further has a concentration of pre-active laser ions that is relatively high at the surface of the rod and decreases to the center of the rod. Methods are disclosed for creating a layer of inactive laser species in the near surface region of a laser rod using substitutional dopant ions and for creating a laser rod with a tailored gain profile such that the quality of the output beam is enhanced.
摘要翻译：提供具有定制增益分布的激光棒，使得输出光束的质量得到增强。激光棒具有在杆的中心处相对高的活性取代离子的浓度并且减小到棒的表面。激光棒还具有在杆的表面处相对较高的预激活激光离子的浓度并且降低到棒的中心。公开了用于使用替代掺杂离子在激光棒的近表面区域中产生无活性激光物质层的方法，并且用于产生具有定制的增益分布的激光棒，使得输出光束的质量得到增强。

16. 发明授权

US07535947B2 Enhanced beam quality from a laser rod using interstitial dopants 有权
标题翻译：使用间隙掺杂剂激光棒增强光束质量
公开(公告)号：US07535947B2
公开(公告)日：2009-05-19
申请号：US11584691
申请日：2006-10-20
申请人： David S. Sumida , Kevin W. Kirby
发明人： David S. Sumida , Kevin W. Kirby
IPC分类号： H01S3/14
CPC分类号： H01S3/0612 , H01S3/061 , H01S3/0617 , H01S3/1618 , H01S3/1643 , H01S3/1691
摘要： A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of dopant ions having a first valence that is relatively high at the center of the rod and decreases to the surface of the rod. The laser rod further has a concentration of interstitial ions and dopant ions having a second valence that is lower than the first valence, the concentration being relatively high at the surface of the rod and decreasing to the center of the rod. Methods are provided for creating a layer of inactive laser species in the near surface region of a laser rod using interstitial dopant ions and for reducing the near surface absorption of incident photons intended to induce lasing in a laser rod using a layer of inactive laser ions.
摘要翻译：提供具有定制增益分布的激光棒，使得输出光束的质量得到增强。激光棒具有在杆的中心处具有相对高的第一价态的掺杂剂离子的浓度并且降低到棒的表面。激光棒还具有间隙离子和掺杂剂离子的浓度，其具有低于第一价态的第二价态，所述浓度在所述棒的表面处相对较高并且减小到所述棒的中心。提供了用于使用间隙掺杂剂离子在激光棒的近表面区域中产生无活性激光物质层的方法，并且用于减少使用一层非活性激光离子在激光棒中诱发激光的入射光子的近表面吸收。

17. 发明申请

US20080165816A1 Enhanced beam quality from a laser rod using interstitial dopants 有权
标题翻译：使用间隙掺杂剂激光棒增强光束质量
公开(公告)号：US20080165816A1
公开(公告)日：2008-07-10
申请号：US11584691
申请日：2006-10-20
申请人： David S. Sumida , Kevin W. Kirby
发明人： David S. Sumida , Kevin W. Kirby
IPC分类号： H01S3/14
CPC分类号： H01S3/0612 , H01S3/061 , H01S3/0617 , H01S3/1618 , H01S3/1643 , H01S3/1691
摘要： A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of dopant ions having a first valence that is relatively high at the center of the rod and decreases to the surface of the rod. The laser rod further has a concentration of interstitial ions and dopant ions having a second valence that is lower than the first valence, the concentration being relatively high at the surface of the rod and decreasing to the center of the rod. Methods are provided for creating a layer of inactive laser species in the near surface region of a laser rod using interstitial dopant ions and for reducing the near surface absorption of incident photons intended to induce lasing in a laser rod using a layer of inactive laser ions.
摘要翻译：提供具有定制增益分布的激光棒，使得输出光束的质量得到增强。激光棒具有在杆的中心处具有相对高的第一价态的掺杂剂离子的浓度并且降低到棒的表面。激光棒还具有间隙离子和掺杂剂离子的浓度，其具有低于第一价态的第二价态，所述浓度在所述棒的表面处相对较高并且减小到所述棒的中心。提供了用于使用间隙掺杂剂离子在激光棒的近表面区域中产生无活性激光物质层的方法，并且用于减少使用一层非活性激光离子在激光棒中诱发激光的入射光子的近表面吸收。

18. 发明授权

US5761233A Monolithic pump cavity and method 失效
标题翻译：整体泵腔和方法
公开(公告)号：US5761233A
公开(公告)日：1998-06-02
申请号：US630395
申请日：1996-04-10
申请人： Hans Bruesselbach , David S. Sumida
发明人： Hans Bruesselbach , David S. Sumida
IPC分类号： H01S3/094 , H01S3/042 , H01S3/06 , H01S3/0941 , H01S3/16 , H01S3/93
CPC分类号： H01S3/0941 , H01S3/0405 , H01S3/042 , H01S3/0602 , H01S3/0606 , H01S3/061 , H01S3/0612 , H01S3/094084 , H01S3/1618 , H01S3/1643
摘要： A high-Q pump cavity is formed from undoped crystal pieces that are diffusion bonded to a doped core of the same crystal host material. The resulting monolithic pump cavity has 2 opposing convex-curved sides which have a highly-reflective coating on their outer surfaces, except in narrow slit-shaped areas on each curved side through which laser-diode-supplied pump light enters the cavity. The curvature of the two curved sides is such that nearly all the pump light rays that pass through the slit-shaped areas are focussed by the curvature onto the doped core, and rays that enter the cavity are redirected through the doped core many times, resulting in efficient, uniform absorption. The cavity has two opposing flat sides that interface with metal heat sink blocks to facilitate the removal of internally-generated heat. Thermally induced astigmatic lensing caused by this heat is countered by cavity design in which the core shape and the dimensions of the cavity minimize this astigmatism. Embedding a doped crystal core within a crystal of the same material allows the lasing mode size to be larger than the core, allowing the entire doped core to be accessible for efficient extraction, helps reduce parasitic oscillation, and provides highly effective cooling. Furthermore, laser diode light couples directly into the doped core, with close to 100% transport efficiency.
摘要翻译：高Q泵浦腔由扩散接合到相同晶体主体材料的掺杂核心的未掺杂晶体片形成。所得到的整体泵腔具有两个相对的凸曲面，在其外表面上具有高反射涂层，除了在激光二极管供应的泵浦光进入空腔的每个弯曲侧上的狭窄狭缝形区域之外。两个弯曲面的曲率使得通过狭缝状区域的几乎所有的泵浦光线被曲率聚焦到掺杂的芯上，并且进入空腔的射线被重新导向通过掺杂核心多次，导致在高效，均匀的吸收。空腔具有与金属散热块相接合的两个相对的平坦侧面，以便于去除内部产生的热量。由这种热导致的热诱导的散光透镜由空腔设计抵消，其中芯的形状和腔的尺寸使得这种散光最小化。将掺杂的晶体核嵌入相同材料的晶体内可以使激光模式尺寸大于芯，使整个掺杂芯可以方便地进行高效提取，有助于减少寄生振荡，并提供高效冷却。此外，激光二极管灯直接耦合到掺杂的芯中，具有接近100％的传输效率。

19. 发明授权

US09178329B2 Laser design 有权
标题翻译：激光设计
公开(公告)号：US09178329B2
公开(公告)日：2015-11-03
申请号：US13470081
申请日：2012-05-11
申请人： Barry A. Wechsler , Michael P. Scripsick , David S. Sumida , Thomas G. Crow
发明人： Barry A. Wechsler , Michael P. Scripsick , David S. Sumida , Thomas G. Crow
IPC分类号： H01S3/04 , H01S3/06 , C30B19/12 , C30B29/32 , H01S3/094 , H01S3/0941 , H01S3/16
CPC分类号： H01S3/0602 , C30B19/12 , C30B29/32 , H01S3/0408 , H01S3/0604 , H01S3/0612 , H01S3/09408 , H01S3/094084 , H01S3/0941 , H01S3/1618 , H01S3/1675
摘要： A laser gain element including an undoped layer of a monoclinic double tungstate (MDT) crystal, and a method of forming a laser gain element are provided. The laser gain element includes a layer of doped MDT crystal adjacent to the undoped layer, the doped MDT layer including a pre-selected concentration of rare earth ions. The layer of doped MDT crystal has an absorption peak at a first wavelength and an emission peak at a second wavelength longer than the first wavelength; and the layer of doped MDT crystal has a fluorescence emission with a weighted average at a third wavelength shorter than the first wavelength. A laser resonator cavity formed with a plurality of composite gain elements as above is also provided.
摘要翻译：提供了包括单斜晶双晶钨酸盐（MDT）晶体的未掺杂层的激光增益元件以及形成激光增益元件的方法。激光增益元件包括与未掺杂层相邻的掺杂MDT晶体层，掺杂的MDT层包括预先选择的稀土离子浓度。掺杂的MDT晶体层在第一波长处具有吸收峰，并且在比第一波长长的第二波长处具有发射峰; 并且掺杂的MDT晶体层具有在比第一波长短的第三波长处的加权平均的荧光发射。还提供了如上所述形成有多个复合增益元件的激光谐振腔。

20. 发明授权

US08283553B1 Photon enhanced thermoelectric power generation 失效
标题翻译：光子增强热电发电
公开(公告)号：US08283553B1
公开(公告)日：2012-10-09
申请号：US12235401
申请日：2008-09-22
申请人： Daniel Yap , David S. Sumida
发明人： Daniel Yap , David S. Sumida
IPC分类号： H01L35/30
CPC分类号： H01L35/30 , H02S10/10
摘要： A system and method for generating electrical power from a heat source utilizing both photonic and thermal conversion are disclosed. Specifically, power is generated by coupling photon converters to thermoelectric pairs in a way such that the thermoelectric pairs gain not only the charge carriers (holes and electrons) generated by the photons absorbed by the photon converters, but also the charge carriers generated by excess heat in the photon converters and an added thermal gradient generated by excess energy in the absorbed photons. Heat exchanger variations for such a system are also disclosed. Specifically, heat exchangers with and without photon emitters are disclosed and variants of refractive indices for heat exchanger systems are disclosed.
摘要翻译：公开了一种利用光子和热转换从热源产生电力的系统和方法。具体地说，通过将光子转换器耦合到热电对来产生功率，使得热电对不仅增加由光子转换器吸收的光子产生的电荷载流子（空穴和电子），而且增加由多余的热量产生的电荷载流子在光子转换器中和由吸收的光子中的过量能量产生的附加热梯度。还公开了这种系统的热交换器变型。特别地，公开了具有和不具有光子发射器的热交换器，并且公开了用于热交换器系统的折射率的变型。

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