公开(公告)号：US5325380A

公开(公告)日：1994-06-28

申请号：US916771

申请日：1992-07-17

申请人： Charles W. Clendening ,  Hagop Injeyan ,  Jacqueline G. Berg ,  Gerald W. Holleman

发明人： Charles W. Clendening ,  Hagop Injeyan ,  Jacqueline G. Berg ,  Gerald W. Holleman

IPC分类号： G02F1/37 ,  H01S3/08 ,  H01S3/10 ,  H01S3/23

CPC分类号： H01S3/23 ,  G02F1/37 ,  H01S3/0809 ,  H01S3/10076 ,  H01S3/10092 ,  H01S3/2316 ,  H01S3/2383

摘要： A dual-wavelength laser emitter is provided for emitting a dual-wavelength laser beam. The laser emitter includes a first laser beam source for generating a first laser beam having a first frequency and a second laser beam source for generating a second laser beam having a second frequency. A beam splitter is included for combining portions of the first and second laser beams to form a dual-wavelength laser beam. The dual-wavelength laser beam is then amplified via an amplifier. A stimulated Brillouin scattering cell may be included to phase conjugate the dual-wavelength laser beam to improve the quality of the output beam. A frequency-doubling crystal may further be included for doubling the frequency of the dual-wavelength laser beam. The dual-wavelength laser emitter then emits a laser output beam as a function of the frequencies and amplitudes of the first and second laser beams.

摘要翻译： 提供双波长激光发射器用于发射双波长激光束。 激光发射器包括用于产生具有第一频率的第一激光束的第一激光束源和用于产生具有第二频率的第二激光束的第二激光束源。 包括分束器，用于组合第一和第二激光束的部分以形成双波长激光束。 然后通过放大器放大双波长激光束。 可以包括受激布里渊散射单元以将双波长激光束相位共轭以提高输出光束的质量。 还可以包括倍频晶体以使双波长激光束的频率加倍。 然后，双波长激光发射器随着第一和第二激光束的频率和振幅的函数发射激光输出光束。

公开(公告)号：US5748654A

公开(公告)日：1998-05-05

申请号：US664659

申请日：1996-06-17

申请人： Leonard J. Marabella ,  Jacqueline G. Berg ,  Gerald W. Holleman ,  Hagop Injeyan ,  James M. Zamel

发明人： Leonard J. Marabella ,  Jacqueline G. Berg ,  Gerald W. Holleman ,  Hagop Injeyan ,  James M. Zamel

IPC分类号： H01S3/0941 ,  H01S5/40 ,  H01S3/098

CPC分类号： H01S3/0941 ,  H01S5/4025

摘要： A technique for operating a diode pumped solid state laser in a continuous-wave (cw) mode using diodes blocks (12) that are individually operated in a pulsed mode. For some high power laser applications, it is desirable to provide for operation in pulsed and cw modes, but pump diodes are typically designed for efficient operation in only one of these modes. The invention includes a controller (20) that pulses the individual diode blocks (12) on and off, but not necessarily in unison. For a pulsed mode of operation, the diodes (12) in an array are pulsed either at the same time, or sub-arrays are pulsed in a temporally interleaved manner for a higher effective pulse repetition rate. For the cw mode of operation, the diodes (12) are pulsed sequentially in sub-arrays (A-E), such that at least one sub-array is always energized and the complete array appears to be providing continuous pumping energy. In one embodiment, the sub-arrays (A-E) are columns of the array. In another embodiment, the sub-arrays (12') are each associated with a different solid-state gain medium (10'), the gain media being optically coupled in a single laser.

摘要翻译： 使用以脉冲模式单独操作的二极管块（12）以连续波（cw）模式操作二极管泵浦固态激光器的技术。 对于一些大功率激光器应用，期望提供在脉冲和cw模式中的操作，但是泵二极管通常被设计用于仅在这些模式之一中的有效操作。 本发明包括控制器（20），该控制器（20）打开和关闭各个二极管块（12），但不一定是一致的。 对于脉冲操作模式，阵列中的二极管（12）同时被脉冲，或者子阵列以时间交替的方式脉冲以获得更高的有效脉冲重复率。 对于cw操作模式，二极管（12）在子阵列（A-E）中顺序地脉冲，使得至少一个子阵列总是被激励，并且整个阵列似乎提供连续的泵浦能量。 在一个实施例中，子阵列（A-E）是阵列的列。 在另一个实施例中，子阵列（12'）各自与不同的固态增益介质（10'）相关联，增益介质在单个激光器中光耦合。

公开(公告)号：US5721749A

公开(公告)日：1998-02-24

申请号：US593961

申请日：1996-01-30

申请人： Gerald W. Holleman ,  Hagop Injeyan

发明人： Gerald W. Holleman ,  Hagop Injeyan

IPC分类号： H01S3/117 ,  B23K26/06 ,  H01S3/08 ,  H01S3/094 ,  H01S3/106 ,  H01S3/16 ,  H01S3/23 ,  H01S3/10

CPC分类号： H01S3/117 ,  B23K26/0622 ,  H01S3/0941 ,  H01S2301/08 ,  H01S3/07 ,  H01S3/08 ,  H01S3/08095 ,  H01S3/094076 ,  H01S3/1022

摘要： A method and apparatus for controlling the form and timing of pulses emitted by a high-power solid-state laser, without the need for complex feedback circuits. The width and peak intensity of relaxation pulses emitted by the laser are controlled by use of an acousto-optic modulator (14) installed in the laser cavity, to lock the relaxation pulses to the frequency of radio-frequency (rf) control signals applied to the modulator. The number and average rate at which the pulses are emitted from the laser are independently controlled by varying the duty cycle of diodes (20) used to pump solid-state amplifiers (18) installed in the laser cavity. Short pump pulses can be selected to deliver only a few relaxation pulses from the laser, or longer pump pulses can be selected to deliver large numbers of relaxation pulses during each pump pulse. Feedback control of the modulator (14) is not needed because the pumping rate is uniform for the duration of each pump pulse and, therefore, the peak intensities of relaxation pulses emitted by the laser are relatively uniform. Accordingly, the solid-state laser can be conveniently controlled to produce a desired average power output while maintaining good beam quality.

摘要翻译： 一种用于控制由大功率固体激光器发射的脉冲的形式和定时的方法和装置，而不需要复杂的反馈电路。 通过使用安装在激光腔中的声光调制器（14）来控制由激光发射的弛豫脉冲的宽度和峰值强度，以将弛豫脉冲锁定到施加到 调制器。 通过改变用于泵浦安装在激光腔中的固态放大器（18）的二极管（20）的占空比来独立地控制从激光器发射脉冲的数量和平均速率。 可以选择短泵浦脉冲以仅从激光器传递几个弛豫脉冲，或者可以选择更长的泵浦脉冲以在每个泵浦脉冲期间递送大量的弛豫脉冲。 不需要调制器（14）的反馈控制，因为在每个泵浦脉冲的持续时间内泵送速率是均匀的，因此激光器发出的松弛脉冲的峰值强度相对均匀。 因此，可以方便地控制固态激光器以产生期望的平均功率输出，同时保持良好的光束质量。

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。

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。

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。

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。

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。

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。

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。