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1. 发明授权

US07173956B2 Electrically controlled uniform or graded reflectivity electro-optic mirror 有权
标题翻译：电子控制均匀或梯度反射电光镜
公开(公告)号：US07173956B2
公开(公告)日：2007-02-06
申请号：US10365155
申请日：2003-02-12
申请人： Steven P. Palese , Hagop Injeyan
发明人： Steven P. Palese , Hagop Injeyan
IPC分类号： H01S3/08
CPC分类号： G02F1/0311 , G02F2202/40 , G02F2203/02 , G02F2203/07 , H01S3/105 , H01S3/107 , H01S3/1103
摘要： An electrically controlled variable reflectance mirror that includes a Pockels cell which enables its retardation or birefringence to be controlled in order to vary the light outcoupled from a laser cavity. Since the retardation is a function of the voltage applied to the Pockels cell, the voltage can be used to control the fraction of the output beam that is outcoupled from the laser cavity. The Pockels cell is formed with a constant reflectivity profile to form an electrically controlled uniform reflectivity electro-optic mirror. In an alternate embodiment of the invention, the Pockels cell is configured with spatially varying retardation to form an electrically controlled graded reflectivity electro-optic mirror. Both embodiments of the invention enable a lasing system, such as a solid state lasing system, to be operated over a relatively wide range of operating parameters utilizing a single set of optics.
摘要翻译：一种电控可变反射镜，其包括能够控制延迟或双折射的Pockels电池，以便改变与激光腔耦合的光。由于延迟是施加到普克尔电池的电压的函数，所以可以使用电压来控制从激光腔输出的输出光束的分数。普克尔斯单元形成具有恒定的反射率分布，以形成电控制的均匀反射电光镜。在本发明的替代实施例中，Pockels单元被配置为具有空间变化的延迟以形成电控分级反射电光镜。本发明的两个实施例使得诸如固态激光系统之类的激光系统能够使用单组光学器件在相对较宽范围的操作参数下操作。

2. 发明申请

US20070189351A1 Liquid laser with colloidal suspension of lasant nanoparticles 审中-公开
标题翻译：液体激光与惰性纳米粒子的胶体悬浮液
公开(公告)号：US20070189351A1
公开(公告)日：2007-08-16
申请号：US11354662
申请日：2006-02-15
申请人： Robert Rice , Hagop Injeyan
发明人： Robert Rice , Hagop Injeyan
IPC分类号： H01S3/20 , H01S3/093
CPC分类号： H01S3/20 , H01S3/022 , H01S3/0402 , H01S3/0941 , H01S3/1611 , H01S3/169
摘要： A laser utilizing a liquid based lasing medium, comprising a colloidal suspension of selected solid state lasant nanoparticles in a selected liquid. Use of sufficiently small lasant nanoparticles allows relaxation of the requirement to match the refractive indices of the lasant and the liquid because the nanoparticles have a desirably low scattering loss even when the refractive indices are not perfectly matched. Therefore, higher laser powers are achievable without unwanted thermally induced birefringence and depolarization.
摘要翻译：一种使用基于液体的激光介质的激光，其包括在所选择的液体中的选定的固态惰性纳米颗粒的胶体悬浮液。使用足够小的惰性纳米粒子允许放松匹配奶油和液体的折射率的要求，因为即使当折射率不完全匹配时，纳米颗粒具有期望的低散射损失。因此，可以实现更高的激光功率，而无需不需要的热诱导双折射和去极化。

3. 发明授权

US07099356B2 Robust seeding technique for single mode laser oscillation 有权
标题翻译：用于单模激光振荡的鲁棒播种技术
公开(公告)号：US07099356B2
公开(公告)日：2006-08-29
申请号：US10440600
申请日：2003-05-19
申请人： Hiroshi Komine , James G. Ho , Hagop Injeyan , Stephen J. Brosnan
发明人： Hiroshi Komine , James G. Ho , Hagop Injeyan , Stephen J. Brosnan
IPC分类号： H01S3/098
CPC分类号： H01S3/10092
摘要： A method is provided for seeding laser system (10) for single longitudinal mode oscillation. The method includes coupling laser system (10) to be seeded for single mode output to a seed laser radiation source (12). Next, the frequency capture range (44) and spacing (46) of the axial modes (42) of the cavity (24) of the laser system (10) are determined. A seed spectrum (36) is then generated from the seed laser radiation source (12) with a bandwidth (40) corresponding to the axial mode spacing (46). The seed spectrum (36) includes a comb of discrete frequency components (38) with one or more of the discrete frequency components (38) being within the frequency capture range (44) of at least one of the axial modes (42). The seed spectrum (36) is then injected into the cavity (24) such that at least one of the axial modes (42) oscillates with the seed radiation.
摘要翻译：提供一种用于种子激光系统（10）用于单纵模振荡的方法。该方法包括将要种子化的激光系统（10）耦合到单模输出到种子激光辐射源（12）。接下来，确定激光系统（10）的空腔（24）的轴向模式（42）的频率捕获范围（44）和间隔（46）。然后从具有对应于轴向模式间隔（46）的带宽（40）从种子激光辐射源（12）产生种子谱（36）。种子谱（36）包括离散频率分量（38）的梳齿，其中一个或多个离散频率分量（38）在至少一个轴向模式（42）的频率捕获范围（44）内。然后将种子光谱（36）注入到空腔（24）中，使得轴向模式（42）中的至少一个与种子辐射振荡。

4. 发明申请

US20080170289A1 Multimode raman waveguide amplifier 审中-公开
标题翻译：多模拉曼波导放大器
公开(公告)号：US20080170289A1
公开(公告)日：2008-07-17
申请号：US11653818
申请日：2007-01-16
申请人： Robert Rex Rice , Hagop Injeyan , Hiroshi Komine , Joseph M. Fukumoto , Bahram Jalali
发明人： Robert Rex Rice , Hagop Injeyan , Hiroshi Komine , Joseph M. Fukumoto , Bahram Jalali
IPC分类号： H01S3/30
CPC分类号： H01S3/30 , H01S3/042 , H01S3/0632 , H01S3/09408 , H01S3/09415
摘要： A Raman waveguide amplifier includes a waveguide comprising a core of a Raman-active medium dimensioned and configured as a self-imaging multimode waveguide. At least one input signal is coupled into the core at a wavelength within a Raman gain spectrum of the Raman-active medium relative to at least one pump beam. The pump beam is coupled into the core so as to amplify the at least one input signal via stimulated Raman scattering to provide an output signal corresponding to an amplified replica of the at least one input signal.
摘要翻译：拉曼波导放大器包括波导，其包括尺寸为并且被配置为自成像多模波导的拉曼有源介质的核心。至少一个输入信号以相对于至少一个泵浦光束的拉曼活性介质的拉曼增益光谱内的波长耦合到芯中。泵浦光束耦合到核心中，以便通过受激拉曼散射放大至少一个输入信号，以提供对应于至少一个输入信号的放大副本的输出信号。

5. 发明授权

US06069730A Phase conjugated master oscillator-power amplifier breakdown control 有权
标题翻译：相位共振主振荡器 - 功率放大器击穿控制
公开(公告)号：US06069730A
公开(公告)日：2000-05-30
申请号：US134466
申请日：1998-08-14
申请人： Hagop Injeyan , Randall J. St. Pierre , Mark E. Weber
发明人： Hagop Injeyan , Randall J. St. Pierre , Mark E. Weber
IPC分类号： H01S3/30 , H01S3/00 , H01S3/10 , H01S3/13 , H01S3/131 , H01S3/23
CPC分类号： H01S3/10076 , H01S3/1303 , H01S3/131 , H01S3/2333
摘要： A system and method for monitoring the mode of an input beam to a phase conjugated master oscillator power amplifier (PC MOPA). In order to prevent catastrophic optical damage to the MOPA components, the method and system shuts down the master oscillator when a multi-mode input beam is detected.
摘要翻译：一种用于监视输入光束到相位共振主振荡器功率放大器（PC MOPA）的模式的系统和方法。为了防止对MOPA组件的灾难性光学损坏，当检测到多模式输入光束时，该方法和系统关闭主振荡器。

6. 发明授权

US5841805A Three-level laser system 失效
标题翻译：三级激光系统
公开(公告)号：US5841805A
公开(公告)日：1998-11-24
申请号：US783646
申请日：1997-01-14
申请人： Hagop Injeyan , Jacqueline G. Berg
发明人： Hagop Injeyan , Jacqueline G. Berg
IPC分类号： H01S3/04 , H01S3/042 , H01S3/06 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/16 , H01S3/09
CPC分类号： H01S3/0941 , H01S3/042 , H01S3/0606 , H01S3/025 , H01S3/0407 , H01S3/0612 , H01S3/08095 , H01S3/10076 , H01S3/2333
摘要： The present invention provides a solid state laser gain medium 28 comprising: (a) a gain layer 30 having pump regions 32 and first and second contact regions 34 and 36, respectively; (b) a first transparent layer 38 optically connected to the first contact region 34 of the gain layer 30 by diffusion bonding; and (c) a second transparent layer 40 optically connected to the second contact region 36 of the gain layer 30 by diffusion bonding. The transparent layers 38 and 40 are transparent to the lasing wavelength of the gain medium 28. The present invention also provides an apparatus for amplifying laser light, comprising: (a) a solid state, slab geometry gain medium 44 having lateral pump faces 46 and a principal radiation absorption axis C; and (b) an excitation mechanism 48 located along the pump faces 46 of the gain medium 44 for generating polarized light along a polarization axis 52 wherein the polarization axis 52 is parallel with the principal absorption axis C of the gain medium 44 to provide increased radiation absorption. The present invention also provides a cooling system 58 for a solid state gain medium 60 generating laser output laser emission at a wavelength from about 2 .mu.m to about 3 .mu.m. The cooling system 58 including a coolant material such as D2O for reducing absorption of laser emissions by the coolant at wavelengths from about 2 .mu.m to about 3 .mu.m.
摘要翻译：本发明提供了一种固态激光增益介质28，其包括：（a）分别具有泵浦区域32和第一和第二接触区域34和36的增益层30; （b）通过扩散接合与增益层30的第一接触区域34光学连接的第一透明层38; 和（c）通过扩散接合与增益层30的第二接触区域36光学连接的第二透明层40。透明层38和40对于增益介质28的激光波长是透明的。本发明还提供了一种用于放大激光的设备，包括：（a）固态板坯几何增益介质44，其具有侧向泵面46和主辐射吸收轴C; 和（b）沿着增益介质44的泵面46定位的激励机构48，用于沿着偏振轴52产生偏振光，其中偏振轴52与增益介质44的主吸收轴C平行，以提供增加的辐射吸收。本发明还提供了一种用于固态增益介质60的冷却系统58，其产生波长为约2μm至约3μm的激光输出激光发射。冷却系统58包括诸如D 2 O的冷却剂材料，用于减少冷却剂在约2μm至约3μm波长处的激光发射的吸收。

7. 发明授权

US5640406A Birefringence compensated laser architecture 失效
标题翻译：双折射补偿激光器架构
公开(公告)号：US5640406A
公开(公告)日：1997-06-17
申请号：US415880
申请日：1995-04-03
申请人： Hagop Injeyan , Randall J. St. Pierre
发明人： Hagop Injeyan , Randall J. St. Pierre
IPC分类号： G02F1/35 , H01S3/04 , H01S3/042 , H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/10 , H01S3/109 , H01S3/23 , H01S3/00
CPC分类号： H01S3/2316 , H01S3/042 , H01S3/0606 , H01S3/0941 , H01S3/0407 , H01S3/0621 , H01S3/0625 , H01S3/08072 , H01S3/08095 , H01S3/10076 , H01S3/109
摘要： Apparatus, and a related method, for compensating for birefringence introduced in a birefringent medium, such as a solid-state amplifier. The invention includes the combination of a quarter-wave plate, a Faraday rotator and a mirror, which may be a phase conjugation cell. Light passing through the quarter-wave plate is substantially circularly polarized, which is advantageous if the mirror is a phase conjugation cell using stimulated Brillouin scattering (SBS). A second pass through the quarter-wave plate provides a linearly polarized beam of which the polarization angle is orthogonally related to that of the original beam, to facilitate out-coupling of energy from the apparatus. The Faraday rotator effects a total polarization angle rotation of 90.degree. in two passes and helps compensate for birefringence when the beam is passed through the birefringent medium again on the return pass. The combination of the quarter-wave plate and the Faraday rotator provides better birefringence cancellation than either element acting alone.
摘要翻译：用于补偿在双折射介质（例如固态放大器）中引入的双折射的装置和相关方法。本发明包括四分之一波片，法拉第旋转器和反射镜的组合，其可以是相位共轭单元。通过四分之一波片的光基本上是圆偏振的，如果反射镜是使用受激布里渊散射（SBS）的相位共轭单元，这是有利的。通过四分之一波片的第二次通过提供线性偏振光束，其偏振角与原始光束正交相关，以促进来自该装置的能量的外耦合。法拉第旋转器在两次通过中实现90°的总偏振角旋转，并且当光束在返回通道上再次通过双折射介质时有助于补偿双折射。四分之一波片和法拉第旋转器的组合提供比单独作用的任一元件更好的双折射消除。

8. 发明申请

US20110292501A1 SCALABLE SEMICONDUCTOR WAVEGUIDE AMPLIFIER 有权
标题翻译：可扩展半导体波导放大器
公开(公告)号：US20110292501A1
公开(公告)日：2011-12-01
申请号：US13207598
申请日：2011-08-11
申请人： Robert Rex Rice , Hagop Injeyan
发明人： Robert Rex Rice , Hagop Injeyan
IPC分类号： H01S5/04
CPC分类号： H01S5/50 , H01S5/024 , H01S5/02423 , H01S5/041 , H01S5/2045
摘要： One embodiment of the present method and apparatus encompasses an apparatus that may have: a predetermined length, the self-imaging semiconductor waveguide having first and second opposed sides; quantum wells disposed within the self-imaging semiconductor waveguide along the length of the self-imaging semiconductor waveguide, the quantum wells being formed of a quantum well gain material; microchannel cooler that extends substantially the width of the self-imaging semiconductor waveguide, the microchannel cooler located adjacent the first side of the self-imaging semiconductor waveguide; and a plurality of pump arrays arranged along the microchannel cooler opposed from the first side of the self-imaging semiconductor waveguide; wherein the quantum well gain material is photopumped through the microchannel cooler.
摘要翻译：本方法和装置的一个实施例包括可以具有：预定长度的装置，该自成像半导体波导具有第一和第二相对侧; 量子阱沿着自成像半导体波导的长度设置在自成像半导体波导内，量子阱由量子阱增益材料形成; 所述微通道冷却器基本上延伸所述自成像半导体波导的宽度，所述微通道冷却器位于所述自成像半导体波导的所述第一侧附近; 以及沿着所述微通道冷却器布置的多个泵阵列，所述多个泵阵列与所述自成像半导体波导的第一侧相对; 其中量子阱增益材料通过微通道冷却器照射。

9. 发明授权

US5796761A High efficiency solid state raman laser system 失效
标题翻译：高效固态拉曼激光系统
公开(公告)号：US5796761A
公开(公告)日：1998-08-18
申请号：US712251
申请日：1996-09-11
申请人： Hagop Injeyan , Eric C. Cheung , James G. Ho
发明人： Hagop Injeyan , Eric C. Cheung , James G. Ho
IPC分类号： H01S3/30
CPC分类号： H01S3/30 , H01S3/08054 , H01S3/094026 , H01S3/109
摘要： A high efficiency solid state Raman laser system for shifting the frequency of an input beam emitted by a laser pumping system is described. The laser pumping system suppresses relaxation oscillations in the input beam and emits a constant power, mode-locked pulse train. A solid Raman medium is disposed inside a Raman resonator cavity to shift the frequency of the input beam to produce a Raman beam. The frequency of the Raman beam is finely tuned in the resonator cavity to eliminate high order Raman shifted wavelengths. The polarization of the Raman beam is selected using a polarizing element disposed in the resonator cavity. The Raman beam frequency is shifted using a non-linear medium inside the resonator cavity. The non-linear medium is preferably a frequency doubler. The Raman laser system is particularly suitable for producing high-quality yellow light for guide star applications.
摘要翻译：描述了用于移动由激光泵送系统发射的输入光束的频率的高效率固态拉曼激光器系统。激光泵浦系统抑制输入光束中的松弛振荡，并发出恒定功率的锁模脉冲串。固体拉曼介质设置在拉曼谐振腔内部，以移动输入光束的频率以产生拉曼光束。拉曼光束的频率在谐振腔内被微调，以消除高阶拉曼偏移波长。使用设置在谐振器腔中的偏振元件来选择拉曼光束的偏振。拉曼光束频率使用谐振腔内的非线性介质移位。非线性介质优选为倍频器。拉曼激光系统特别适用于生产用于导星应用的高品质黄光。

10. 发明授权

US5555254A High brightness solid-state laser with zig-zag amplifier 失效
标题翻译：具有锯齿形放大器的高亮度固态激光器
公开(公告)号：US5555254A
公开(公告)日：1996-09-10
申请号：US148758
申请日：1993-11-05
申请人： Hagop Injeyan , Randall J. St. Pierre , Rodger C. Hilyard , George M. Harpole , Carolyn S. Hoefer
发明人： Hagop Injeyan , Randall J. St. Pierre , Rodger C. Hilyard , George M. Harpole , Carolyn S. Hoefer
IPC分类号： G02F1/35 , H01S3/04 , H01S3/042 , H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/10 , H01S3/109 , H01S3/23
CPC分类号： H01S3/2316 , H01S3/042 , H01S3/0606 , H01S3/0941 , H01S3/0407 , H01S3/0621 , H01S3/0625 , H01S3/08072 , H01S3/08095 , H01S3/10076 , H01S3/109
摘要： A solid-state laser architecture producing a beam of extremely high quality and brightness, including a master oscillator operating in conjunction with a zig-zag amplifier, an image relaying telescope and a phase conjugation cell. One embodiment of the laser architecture compensates for birefringence that is thermally induced in the amplifier, but injects linearly polarized light into the phase conjugation cell. Another embodiment injects circularly polarized light into the phase conjugation cell and includes optical components that eliminate birefringence effects arising in a first pass through the amplifier. Optional features permit the use of a frequency doubler assembly to provide output at twice optical frequencies, and an electro-optical switch or Faraday rotator to effect polarization angle rotation if the amplifier material can only be operated at one polarization. The zig-zag amplifier is cooled by flow of cooling liquid, preferably using longitudinal flow to minimize temperature gradients in a vertical direction, and has cooling channel seals disposed in dead zones that receive no light, to minimize optical damage to the seals. Light is input to the amplifier at a near normal angle of incidence, to minimize polarization by reflection and to permit a polarizer to be used to extract an output beam from the amplifier. Antireflective coatings on edges and on sides of the amplifier eliminate parasitic oscillations, and wedge-shaped windows provide uniform pumping by eliminating gaps between diode arrays.
摘要翻译：一种固态激光器架构，产生了极高质量和亮度的光束，包括与之前的Zig放大器，图像中继望远镜和相位共轭单元结合操作的主振荡器。激光器结构的一个实施例补偿了在放大器中热感应的双折射，但是将线偏振光注入到相位共轭单元中。另一实施例将圆偏振光注入到相位共轭单元中，并且包括消除在第一次通过放大器中产生的双折射效应的光学部件。可选功能允许使用倍频器组件提供两倍光频率的输出，以及如果放大器材料只能在一个极化下操作，则电光开关或法拉第旋转器可实现偏振角旋转。锯齿形放大器通过冷却液体的流动来冷却，优选地使用纵向流动以使垂直方向上的温度梯度最小化，并且具有设置在不受光的死区中的冷却通道密封件，以最小化对密封件的光学损伤。光以接近的正常入射角输入到放大器，以通过反射使偏振最小化，并允许使用偏振器从放大器提取输出光束。在放大器的边缘和侧面上的抗反射涂层消除了寄生振荡，楔形窗口通过消除二极管阵列之间的间隙来提供均匀的泵浦。

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