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公开(公告)号：US07646546B1
公开(公告)日：2010-01-12
申请号：US11451623
申请日：2006-06-12
Applicant: John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
Inventor： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
CPC classification number: G02B27/0081 , G02B19/0014 , G02B19/0052 , G02B27/0972 , G02B27/283 , H01S5/005 , H01S5/0092 , H01S5/0683
Abstract: Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form a Brewster telescope, the first prism and second prism each having an input surface and an exit surface, and wherein at least one surface of the input or exit surfaces are coated with a polarization selective coating. The optical system can include an adjustment system configured to change the position of one or both of the first prism and the second prism to adjust the transformation of the shape of the laser beam. In some embodiments of the optical system, a configuration of the first prism, the second prism, and the polarization selective coating produce a laser beam having a polarization ratio of about 100:1 or higher.
Abstract translation: 公开了用于将激光束变换成例如变频激光系统中的偏振成形光束的装置和方法。 在一个实施例中，变形光学系统包括第一棱镜和第二棱镜，其可以被配置成形成布鲁斯特望远镜，第一棱镜和第二棱镜各自具有输入表面和出射表面，并且其中至少一个表面 输入或出射表面涂覆有偏振选择性涂层。 光学系统可以包括被配置为改变第一棱镜和第二棱镜中的一个或两个的位置以调整激光束的形状的变换的调节系统。 在光学系统的一些实施例中，第一棱镜，第二棱镜和偏振选择性涂层的配置产生具有约100:1或更高的偏振比的激光束。
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公开(公告)号：US20090257054A1
公开(公告)日：2009-10-15
申请号：US12418494
申请日：2009-04-03
Applicant: David E. Hargis
Inventor： David E. Hargis
CPC classification number: G01J3/10 , G01J3/0286 , G01N21/05 , G01N21/31 , G01N21/6402 , G01N21/645 , G01N2021/0346 , G01N2021/6419
Abstract: Various embodiments of an optical system for directing light for optical measurements such laser-induced fluorescence and spectroscopic analysis are disclosed. In some embodiments, the optical system includes a thermally conductive housing and a thermoelectric controller, a plurality of optical fibers, and one or more optical elements to direct light emitted by the optical fibers to illuminate a flow cell. The housing is configured to attach to a flow cell.
Abstract translation: 公开了用于引导光用于诸如激光诱导荧光和光谱分析之类的光学测量的光学系统的各种实施例。 在一些实施例中，光学系统包括导热壳体和热电控制器，多个光纤以及一个或多个光学元件，用于引导由光纤发射的光以照亮流动池。 壳体被配置成附接到流动池。
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公开(公告)号：US07197059B2
公开(公告)日：2007-03-27
申请号：US11138606
申请日：2005-05-25
Applicant: Eric B. Takeuchi , David E. Hargis
Inventor： Eric B. Takeuchi , David E. Hargis
IPC: H01S3/09
CPC classification number: H01S3/0941 , H01S3/0621 , H01S3/0627 , H01S3/1603 , H01S5/32341
Abstract: A diode-pumped solid-state laser including a short wavelength (e.g., blue, violet, or UV) semiconductor laser that pumps an absorption transition in a rare-earth-doped material. Responsive to this pumping, the rare-earth active ion directly emits laser radiation. A number of different wavelength outputs, including short wavelengths, are achievable dependent upon the material and the pump wavelength. The gain medium may include an active ion selected from Er3+ Sm3+, Eu3+, Tb3+, Dy3+, Tm3+, Ho3+, and Pr3+. A laser diode pump source has a wavelength in the range of about 365 nm to 480 nm to excite a laser emission in the range of 370 to 800 nm. The laser diode pump source may comprise a GaN-based semiconductor. In some embodiments, the laser diode pump source supplies a pump beam in a range of 370–380 nm, 400–415 nm, 435–445 nm, or 468–478 nm.
Abstract translation: 包括在稀土掺杂材料中泵浦吸收跃迁的短波长（例如，蓝色，紫色或UV）半导体激光器的二极管泵浦固态激光器。 响应于这种泵送，稀土活性离子直接发射激光辐射。 取决于材料和泵浦波长，可以实现许多不同的波长输出，包括短波长。 增益介质可以包括选自Er 3+，Sm 3+，Eu 3+，Tb 3+的活性离子， SUP 3，Dy 3+，T 3+，Ho 3+，和3+ 3+。 激光二极管泵浦源具有在约365nm至480nm范围内的波长，以激发在370至800nm范围内的激光发射。 激光二极管泵浦源可以包括GaN基半导体。 在一些实施例中，激光二极管泵浦源提供在370-380nm，400-415nm，435-445nm或468-478nm范围内的泵浦光束。
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公开(公告)号：US5771324A
公开(公告)日：1998-06-23
申请号：US791248
申请日：1997-01-30
Applicant: David E. Hargis
Inventor： David E. Hargis
CPC classification number: G02B6/4249 , G02B6/04 , G02B6/4216 , G02B6/3812 , H01S5/4012
Abstract: An optical fiber coupling assembly for substantially preserving polarization of transmitted optical radiation, including at least one multimode optical fiber situated in a housing that includes means for distributing pressure on the optical fiber and reducing stress on the multimode optical fiber. In one embodiment, the housing has a first and a second side, and includes a channel having a first end opening on the first side and a second end within the housing. A cavity connected to the second end of the channel is formed within the housing. An aperture formed in the housing connects the cavity to the second side. The channel, cavity, and aperture together provide a passageway for the optical fibers from the first side to the second side of the housing. In the preferred embodiment the aperture bundles a plurality of fibers together in an approximately circular cross-section. A laser such as a laser diode or laser diode array provides substantially polarized optical radiation that is coupled into a first end of the optical fibers. The optical radiation transmitted through the housing is outputted from the second side having substantially preserved polarization from the bundled second ends to provide a collective output beam having a substantially single polarization. The collective output beam is useful for pumping a solid state laser. The polarization preservation between the first and second ends may be greater than 70%, and in some embodiments greater than 90%.
Abstract translation: 一种用于基本上保持透射光辐射的偏振的光纤耦合组件，包括位于壳体中的至少一个多模光纤，其包括用于分配光纤上的压力并减少多模光纤上的应力的装置。 在一个实施例中，壳体具有第一和第二侧面，并且包括具有第一侧上的第一端部开口和壳体内的第二端部的通道。 连接到通道的第二端的空腔形成在壳体内。 形成在壳体中的孔将空腔连接到第二侧。 通道，空腔和孔一起为光纤从壳体的第一侧到第二侧提供通道。 在优选实施例中，孔以大致圆形横截面将多个纤维捆束在一起。 诸如激光二极管或激光二极管阵列的激光器提供耦合到光纤的第一端的基本上偏振的光辐射。 透过壳体的光辐射从具有基本保持的极化的第二侧从捆扎的第二端输出，以提供具有基本上单一偏振的集体输出光束。 集体输出光束可用于泵浦固态激光器。 第一端和第二端之间的极化保持可以大于70％，在一些实施例中大于90％。
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公开(公告)号：US5700076A
公开(公告)日：1997-12-23
申请号：US292619
申请日：1994-08-18
Applicant: Arthur P. Minich , David W. Kappel , David E. Hargis , Shlomo Assa
Inventor： Arthur P. Minich , David W. Kappel , David E. Hargis , Shlomo Assa
CPC classification number: G02B19/0028 , G02B19/0057 , G02B27/0927 , G02B27/0944 , G02B27/0961 , G02B27/1033 , G02B27/1053 , G02B27/1086 , G02B27/123 , G02B27/149 , H04N9/3129 , H04N9/3161
Abstract: The laser illuminated image producing system includes in one form of the invention, a single light valve which not only serves to form an image, but also to increase the number of its colors. In another form of the invention, the lasers are sequenced at high input energy for short intervals of time to provide high average output luminosity at lower average energy costs.
Abstract translation: 激光照明图像产生系统包括本发明的一种形式，单个光阀不仅用于形成图像，而且还增加了其颜色数量。 在本发明的另一种形式中，激光器在高输入能量下以较短的时间间隔进行排序，以较低的平均能量成本提供高的平均输出亮度。
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Patent Agency Ranking
公开(公告)号：US07869133B2
公开(公告)日：2011-01-11
申请号：US12686178
申请日：2010-01-12
Applicant: John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
Inventor： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
CPC classification number: G02B27/0081 , G02B19/0014 , G02B19/0052 , G02B27/0972 , G02B27/283 , H01S5/005 , H01S5/0092 , H01S5/0683
Abstract: Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form a Brewster telescope, the first prism and second prism each having an input surface and an exit surface, and wherein at least one surface of the input or exit surfaces are coated with a polarization selective coating. The optical system can include an adjustment system configured to change the position of one or both of the first prism and the second prism to adjust the transformation of the shape of the laser beam. In some embodiments of the optical system, a configuration of the first prism, the second prism, and the polarization selective coating produce a laser beam having a polarization ratio of about 100:1 or higher.
Abstract translation: 公开了用于将激光束变换为例如变频激光系统中的偏振成形光束的装置和方法。 在一个实施例中，变形光学系统包括第一棱镜和第二棱镜，其可以被配置成形成布鲁斯特望远镜，第一棱镜和第二棱镜各自具有输入表面和出射表面，并且其中至少一个表面 输入或出射表面涂覆有偏振选择性涂层。 光学系统可以包括被配置为改变第一棱镜和第二棱镜中的一个或两个的位置以调整激光束的形状的变换的调节系统。 在光学系统的一些实施例中，第一棱镜，第二棱镜和偏振选择性涂层的配置产生具有约100:1或更高的偏振比的激光束。
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公开(公告)号：US6154259A
公开(公告)日：2000-11-28
申请号：US978655
申请日：1997-11-26
Applicant: David E. Hargis , Charles G. Fink , Robert A. Bergstedt , Graham W. Flint
Inventor： David E. Hargis , Charles G. Fink , Robert A. Bergstedt , Graham W. Flint
CPC classification number: H04N9/3141 , H04N5/7416 , H04N9/3132
Abstract: A display system includes blue, green, and red laser light sources and light shaping devices which receive the laser light from the laser light sources and shapes the light into a number of approximately identical beamlets. The beamlets are modulated individually and the modulated beamlets are combined. The combining results in an output of beamlets, each of which comprises three input beamlets of each of the colors red, green, and blue. The resultant beamlets can then be scanned onto a display screen.
Abstract translation: 显示系统包括蓝色，绿色和红色激光光源和光学成形装置，其接收来自激光光源的激光，并将光线形成多个大致相同的子束。 子束被单独调制，调制的子束被组合。 组合产生子束的输出，每个子束包括红色，绿色和蓝色中的每一种的三个输入子束。 然后可以将所得的小束扫描到显示屏上。
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公开(公告)号：US5990983A
公开(公告)日：1999-11-23
申请号：US727618
申请日：1997-06-23
Applicant: David E. Hargis , Graham Flint , Shlomo Assa
Inventor： David E. Hargis , Graham Flint , Shlomo Assa
CPC classification number: H04N9/3132
Abstract: An image projection system employing microlaser and/or diode laser arrays. Each laser in each array is individually addressable. The system includes three linear laser arrays, one red, one green, and one blue, each individually addressable laser being powered and modulated in accordance with the input image signal. When microlaser arrays, which are energized by laser diode pumps, are used, the laser diode pumps are formed in equivalent arrays. The laser output beams are combined in a dichroic prism and reflected off a rotating multifaceted scanning mirror which effects two dimensional scanning as it rotates. The image beam reflected from the scanner passes through an imaging lens, a speckle eliminator and then onto the projection screen. The invention also includes the method of generating and scanning the image beam, as well as the novel speckle eliminator and the microlaser array configured for optimally close spacing to achieve the desired result. In one embodiment, the laser diode pumps are directly modulated by the video signal, while in another embodiment the microlaser outputs are modulated utilizing a spatial light modulator array.
Abstract translation: PCT No.PCT / US94 / 11181 Sec。 371日期：1997年6月23日 102（e）日期1997年6月23日PCT 1994年9月30日PCT PCT。 公开号WO95 / 10159 日期1995年04月13日采用微型激光器和/或二极管激光器阵列的图像投影系统。 每个阵列中的每个激光单独可寻址。 该系统包括三个线性激光器阵列，一个红色，一个绿色和一个蓝色，每个可单独寻址的激光器根据输入图像信号进行供电和调制。 当使用由激光二极管泵激励的微激光器阵列时，激光二极管泵以相同的阵列形成。 激光输出光束在二向色棱镜中组合并被旋转的多面扫描反射镜反射，在其旋转时进行二维扫描。 从扫描仪反射的图像束通过成像透镜，散斑消除器，然后穿过投影屏幕。 本发明还包括产生和扫描图像束的方法，以及新颖的散斑消除器和微型激光器阵列，其被配置为用于最佳间隔以获得期望的结果。 在一个实施例中，激光二极管泵由视频信号直接调制，而在另一实施例中，利用空间光调制器阵列来调制微激光输出。
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9.发明授权Optically transparent heat sink for longitudinally cooling an element in a laser 失效用于纵向冷却激光元件的光学透明散热器
公开(公告)号：US5796766A
公开(公告)日：1998-08-18
申请号：US784051
申请日：1997-01-17
Applicant: David E. Hargis , Sven E. Nelte
Inventor： David E. Hargis , Sven E. Nelte
CPC classification number: H01S3/0627 , H01S3/042 , H01S3/082 , H01S3/109 , G02F2001/3503 , H01S2302/00 , H01S2303/00 , H01S3/025 , H01S3/0401 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0815 , H01S3/0816 , H01S3/09415 , H01S3/1611 , H01S3/1671 , H01S3/1673
Abstract: A longitudinally-cooled laser element assembly comprises an optically transparent heat sink (OTH) coupled to a laser element and a heat sink. An etalon structure including a first flat surface and a second, substantially parallel flat surface is formed in the laser element and/or the OTH. In some embodiments, a balanced etalon is provided by forming a reflector on the second flat surface of the etalon that has a reflectivity approximately equal to the Fresnel loss at the interface between the OTH and the laser element. In some embodiments the laser element assembly includes a second OTH coupled to the laser element at a second interface, thereby defining a second Fresnel loss. Preferably, the second OTH has an index of refraction substantially equal to the index of refraction of the first OTH, so that said first and second Fresnel losses are approximately equal and a balanced etalon is formed. In some embodiments the laser element comprises a solid-state gain medium. In other embodiments the laser element comprises a nonlinear frequency conversion crystal. An intracavity frequency-converted laser is described in which OTHs are used to cool both the gain medium and the nonlinear material.
Abstract translation: 纵向冷却激光元件组件包括耦合到激光元件和散热器的光学透明散热器（OTH）。 在激光元件和/或OTH中形成包括第一平坦表面和第二基本上平行的平坦表面的标准具结构。 在一些实施例中，通过在标准具的第二平坦表面上形成具有近似等于OTH和激光元件之间的界面处的菲涅耳损耗的反射率的反射器来提供平衡的标准具。 在一些实施例中，激光元件组件包括在第二界面处耦合到激光元件的第二OTH，从而限定第二菲涅耳损耗。 优选地，第二OTH具有基本上等于第一OTH的折射率的折射率，使得所述第一和第二菲涅尔损耗近似相等，并且形成平衡的标准具。 在一些实施例中，激光元件包括固态增益介质。 在其他实施例中，激光元件包括非线性频率转换晶体。 描述了腔内频率转换激光器，其中使用OTH来冷却增益介质和非线性材料。
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公开(公告)号：US5751751A
公开(公告)日：1998-05-12
申请号：US731823
申请日：1996-10-21
Applicant: David E. Hargis , Sven E. Nelte
Inventor： David E. Hargis , Sven E. Nelte
CPC classification number: H01S3/0627 , H01S3/109 , H01S2302/00 , H01S2303/00 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0615 , H01S3/07 , H01S3/0809 , H01S3/09415 , H01S3/1611 , H01S3/1671
Abstract: A monolithic diode pumped solid-state laser (11) comprising as the laser host neodymium-doped yttrium orthovanadate (Nd:YVO.sub.4) (12, 52) or neodymium-doped gadolinium orthovanadate (Nd:GdVO.sub.4) (57, 67) operating on the .sup.4 F.sub.3/2 .fwdarw..sup.4 I.sub.9/2 (.about.914 nm or .about.912 nm respectively) transition, to which a suitable nonlinear optic material (16), such as potassium niobate (KNbO.sub.3) or beta barium borate (BBO), is bonded. The nonlinear crystal gives rise to intracavity frequency doubling to .about.457 or .about.456 nm. The microlaser is a composite cavity formed from a gain medium crystal and a nonlinear frequency doubling material which together have four spaced parallel dielectrically coated faces (14, 17, 18, 15) and which is positioned in close proximity to a diode laser pump source (13) for phase-matched harmonic generation of blue light along an axis of propagation which lies substantially perpendicular to the two faces of the composite cavity. By employing specific doping concentration-lengths products of lasant material and pumping the gain medium which has a specific crystalline orientation the desired efficient blue microlaser is achieved. Alternative embodiments combine the Nd:YVO.sub.4 and Nd:GdVO.sub.4 elements to enhance certain output characteristics of the laser.
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