公开(公告)号：US09293889B1

公开(公告)日：2016-03-22

申请号：US14732723

申请日：2015-06-06

申请人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

发明人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

IPC分类号： H01S3/30 ,  H01S3/067 ,  H01S3/082 ,  H01S3/10 ,  H01S3/1055 ,  H01S3/105

CPC分类号： H01S3/302 ,  H01S3/06725 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/0826 ,  H01S3/10092 ,  H01S3/1053 ,  H01S3/1055 ,  H01S3/108 ,  H01S3/1086 ,  H01S3/1655 ,  H01S3/2316 ,  H01S3/30 ,  H01S5/5027

摘要： A third-order Stokes signal at the desired output wavelength of 1240 nm and a zeroth-order Stokes pump wavelength at 1066 nm are seeded into a Raman amplifier comprised of two nested resonators tuned to the first-order Stokes line at 1118 nm and second-order Stokes line at 1176 nm, respectively. The pump wavelength is first amplified and then sequentially converted into the first and second-order Stokes wavelengths as the light traverses the nested resonators. The desired third-order Stokes output wavelength is then amplified by the second-order Stokes wavelength as it propagates through the outermost resonator. Each Raman resonator includes a photosensitive Raman fiber located between a pair of Bragg gratings. The linewidths of the various Stokes orders can be controlled through adjusting the resonant bandwidths of the Raman resonators by offsetting, through heating, the reflectivity bandwidths of each pair of Bragg gratings respectively located in the Raman resonators.

摘要翻译： 在1240nm的期望输出波长和1066nm的零阶斯托克斯泵浦波长的三阶斯托克斯信号被接种到由调谐到1118nm的一阶斯托克斯线的两个嵌套谐振器组成的拉曼放大器中， 分别为1176 nm的斯托克斯线。 泵浦波长首先被放大，然后随着光穿过嵌套的谐振器，依次转换成第一和第二斯托克斯波长。 然后，当所需的三阶斯托克斯输出波长通过最外面的谐振器传播时，二阶斯托克斯波长被放大。 每个拉曼谐振器包括位于一对布拉格光栅之间的感光拉曼光纤。 可以通过调整拉曼谐振器的谐振带宽来控制各种斯托克斯次数的线宽，通过加热分别位于拉曼谐振器中的每对布拉格光栅的反射带宽偏移。

公开(公告)号：US08761210B1

公开(公告)日：2014-06-24

申请号：US13917559

申请日：2013-06-13

申请人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

发明人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

IPC分类号： H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06725 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/0826 ,  H01S3/10092 ,  H01S3/1053 ,  H01S3/1055 ,  H01S3/108 ,  H01S3/1086 ,  H01S3/1655 ,  H01S3/2316 ,  H01S3/30 ,  H01S5/5027

摘要： A broad linewidth, zeroth Stokes order 1069 nm pump and a narrow linewidth second Stokes order 1178 nm seed propagate through a wavelength division multiplexer and then through a rare-earth-doped amplifier. After passing through a 1121 nm long period or tilted Bragg grating, the amplified 1069 nm Stokes signal and the 1178 Stokes signal are injected into a 1121 nm resonator Raman cavity, which includes a pair of highly reflective Bragg gratings having a center wavelength of 1121 nm. The amplified 1069 nm Stokes signal is Raman converted to high power levels of 1121 nm which then, in turn, amplifies the 1178 nm Stokes seed as it traverses the cavity. The linewidth of the amplified 1178 nm Stokes signal can be controlled by offsetting, through heating, the reflectivity bandwidth of the Bragg grating located near the output end of the Raman cavity.

摘要翻译： 宽线宽，零斯托克斯序列1069 nm泵浦和窄线宽第二斯托克斯阶数1178 nm种子通过波分复用器传播，然后通过稀土掺杂放大器传播。 经过1121nm长周期或倾斜的布拉格光栅后，将放大的1069nm的斯托克斯信号和1178斯托克斯信号注入1121nm的谐振器拉曼腔，其包括一对具有中心波长为1121nm的高反射布拉格光栅 。 放大的1069nm的斯托克斯信号是拉曼转换为1121nm的高功率水平，然后在其穿过腔体时放大1178nm斯托克斯种子。 通过加热位于拉曼腔输出端附近的布拉格光栅的反射带宽，可以控制放大的1178 nm斯托克斯信号的线宽。

公开(公告)号：US06717719B1

公开(公告)日：2004-04-06

申请号：US09682433

申请日：2001-10-01

申请人： Gerald T. Moore

发明人： Gerald T. Moore

IPC分类号： H01S3091

CPC分类号： G02B6/2817 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/08059 ,  H01S3/1307 ,  H01S3/2383

摘要： A multiplexing device using N-stages of double-coated planar glass mirrors or coated mirror pairs to coherently combine the output of 2N narrow-bandwidth, diffraction-limited, polarized, and phase-locked optical beams to produce a single diffraction-limited beam with a power close to 2N times that of a single beam. A multiplexer system is also disclosed to control the relative phases of the 2N beams used in conjunction with the multiplexing device.

摘要翻译： 使用N级双层平面玻璃镜或涂层镜对的多路复用装置相干地组合2 N窄带宽，衍射限制，偏振和锁相光束的输出，以产生单个衍射 - 有限光束的功率接近单光束的2 N倍。 还公开了一种多路复用器系统来控制与多路复用装置结合使用的2 N波束的相对相位。

公开(公告)号：US06650664B1

公开(公告)日：2003-11-18

申请号：US09681134

申请日：2001-01-19

申请人： Gerald T. Moore ,  John R. Marciante

发明人： Gerald T. Moore ,  John R. Marciante

IPC分类号： H01S330

CPC分类号： H01S3/06708 ,  H01S3/094003

摘要： A high power fiber laser/amplifier is comprised of a multi-mode rare-earth-doped helical core disposed within a cylindrical inner cladding. The inner cladding is enclosed within an outer cladding whereby the core effectively produces single-mode operation with a circularly polarized near-diffraction-limited beam quality output when pump radiation is injected into the inner cladding.

摘要翻译： 高功率光纤激光器/放大器由设置在圆柱形内包层内的多模稀土掺杂螺旋芯构成。 内包层被封闭在外包层内，由此当泵浦辐射被注入到内包层中时，核有效地产生具有圆偏振近衍射限制束质量输出的单模操作。

公开(公告)号：US06310715B1

公开(公告)日：2001-10-30

申请号：US09558527

申请日：2000-04-26

申请人： Gerald T. Moore

发明人： Gerald T. Moore

IPC分类号： H01S300

CPC分类号： H01S3/2333 ,  H01S3/005 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/10076 ,  H01S3/1307 ,  H01S3/2383 ,  H01S3/302

摘要： A stack of optically contacted birefringent crystals is configured to carry out coherent beam combination (multiplexing) of narrow-bandwidth phase-locked beams from multiple lasers or laser amplifiers (e.g., multimode Yb-doped fiber amplifiers). A stack of N crystals can multiplex the output of 2N laser amplifiers into a single diffraction-limited beam. Phase control of the beams is maintained by an electronic servo which monitors the optical power emitted into certain undesired beams and minimizes this power by means of phase adjusters (e.g., piezoelectric fiber stretchers) on each amplifier. A configuration is described where a front-end laser master oscillator (FMO) (e.g., a Nd:YAG laser) is demultiplexed by the crystal stack, passes through multiple laser amplifiers, is reflected back through the amplifiers by phase-conjugating mirrors (e.g., passive multimode fibers generating stimulated Brillouin scattering), and is multiplexed on the return trip through the crystal stack. Phase conjugation removes beam distortion and depolarization produced on a single pass through the amplifiers, and the reflected beams are generated with the spatial profiles and alignment needed for beam recombination. An additional back-end laser master oscillator (BMO) (e.g., a second Nd:YAG laser) seeds the phase-conjugate field to phase-lock the different amplifiers.

摘要翻译： 光学接触双折射晶体的堆叠被配置为执行来自多个激光器或激光放大器（例如，多模Yb掺杂光纤放大器）的窄带宽锁相光束的相干光束组合（多路复用）。 N个晶体的堆叠可将2N激光放大器的输出复用为单个衍射受限束。 光束的相位控制由电子伺服器维持，该电子伺服器监视发射到某些不需要的光束中的光功率，并通过每个放大器上的相位调节器（例如，压电光纤拉伸器）来最小化该功率。 描述了一种配置，其中前端激光主振荡器（FMO）（例如，Nd：YAG激光器）被晶体堆栈解复用，通过多个激光放大器，通过相位共轭反射镜（例如， ，无源多模光纤产生受激布里渊散射），并通过晶体叠层复用在返回跳闸上。 相位共轭去除了在通过放大器的单次通过中产生的波束失真和去极化，并且反射的光束被生成具有用于光束复合所需的空间分布和对准。 附加的后端激光主振荡器（BMO）（例如，第二Nd：YAG激光器）对相位共轭场进行种子以锁相不同的放大器。

公开(公告)号：US5500865A

公开(公告)日：1996-03-19

申请号：US308109

申请日：1994-09-13

申请人： Stephen H. Chakmakjian ,  Mark T. Gruneisen ,  Karl W. Koch, III ,  Gerald T. Moore

发明人： Stephen H. Chakmakjian ,  Mark T. Gruneisen ,  Karl W. Koch, III ,  Gerald T. Moore

IPC分类号： G02F1/37 ,  H01S3/109

CPC分类号： G02F1/37

摘要： Optical frequency doubling apparatus is disclosed having a system output portion and a source of coherent radiation together with a plurality of discreet nonlinear light transmissive devices positioned in series between the source of coherent radiation and the system output portion, and further including a phase shifter positioned in series with the nonlinear light transmissive devices for altering the phase of light wavefronts passing therethrough. A harmonic beamsplitter is used to separate the frequency doubled output from the coherent light inputted into the system by the source of coherent radiation.

摘要翻译： 公开了一种具有系统输出部分和相干辐射源的光学倍频装置以及串联在相干辐射源和系统输出部分之间的多个离散非线性光透射装置，并且还包括位移器 与用于改变通过其中的光波前相位的非线性透光装置串联。 谐波分束器用于将频率双倍输出与通过相干辐射源输入到系统的相干光分离。

公开(公告)号：US07489847B1

公开(公告)日：2009-02-10

申请号：US11782035

申请日：2007-07-24

申请人： Gerald T. Moore

发明人： Gerald T. Moore

IPC分类号： G02B6/02

CPC分类号： G02B6/032 ,  G02B6/024

摘要： A single-mode optical fiber segment incorporating liquid-filled holes parallel to the core that are sealed at each end. Heating the liquid produces stress in the fiber and thereby increases the birefringence level. Alternatively the holes may be filled and sealed at a temperature lower than the temperature at which the fiber will be operated, the temperature difference determining the stress level for given hole characteristics.

摘要翻译： 一个单模光纤段，其中包含平行于芯的液体填充孔，每个端部都密封。 加热液体会在纤维中产生应力，从而增加双折射水平。 或者，孔可以在低于纤维将被操作的温度的温度下填充和密封，温度差确定给定孔特性的应力水平。

公开(公告)号：US07336858B1

公开(公告)日：2008-02-26

申请号：US11626095

申请日：2007-03-08

申请人： Gerald T. Moore

发明人： Gerald T. Moore

IPC分类号： G02B6/00

CPC分类号： G02B6/02109 ,  G02B6/4208 ,  G02F1/0955

摘要： An in-fiber optical isolator for high-power operation using two kinds of fiber, not including the active fiber where laser gain occurs. A hi-birefringence passive fiber with a tilted Bragg grating is connected to the active fiber at one end with the connection region stripped and potted to remove pump and s-polarized signals. The other end of the hi-bi fiber is fusion spliced to a low-birefringence fiber and oriented so that the birefringent axes are parallel. The low-bi fiber then passes straight through a gap in a linear magnetic array calculated to cause a 45 degree Faraday rotation. The far end of the low-bi fiber is connected to another hi-birefringence passive fiber with a tilted Bragg grating but with the birefringent axes of the hi-bi rotated by 45 degrees with respect to those of the low-bi fiber. Backward light transmitted by the second Bragg grating will then be removed by the first Bragg grating.

摘要翻译： 一种用于大功率操作的光纤隔离器，使用两种光纤，不包括发生激光增益的有源光纤。 具有倾斜布拉格光栅的高双折射无源光纤在一端连接到有源光纤，连接区被剥离和封装以去除泵浦和s偏振信号。 高双折射纤维的另一端被熔接到低双折射光纤并且被定向成使得双折射轴线平行。 然后，低Bi纤维直接通过计算为导致45度法拉第旋转的线性磁阵列中的间隙。 低双向光纤的远端与另一个具有倾斜布拉格光栅的高双折射无源光纤连接，而双向双折射光纤的双折射轴相对于低二极纤维的双折射轴旋转了45度。 第二布拉格光栅所传输的后向光将被第一个布拉格光栅去除。

公开(公告)号：US5646764A

公开(公告)日：1997-07-08

申请号：US443297

申请日：1995-05-17

申请人： Gerald T. Moore ,  Karl W. Koch ,  Eric C. Cheung

发明人： Gerald T. Moore ,  Karl W. Koch ,  Eric C. Cheung

IPC分类号： G02B26/10 ,  G02B26/08 ,  H01S3/08 ,  H01S3/10

CPC分类号： G02F1/3525 ,  G02B26/10

摘要： The present invention is a beam scanner for use about a nonlinear optical crystal for frequency conversion. The scanner oscillates the high power laser beam passing through the crystal to reduce heat damage and does not change the direction or the position of the beam upon exiting the scanner. A pair of thick optical plates are affixed to a driven axle being parallel to the laser beam direction. The first plate is mounted at a given angle to the axle and the second plate is mounted at the same but negative angle to the axle so that they are mirror images about the crystal. As the axle rotates, the laser beam moves through the crystal in a cylindrical pattern and due to the manner of mounting the plates, the exiting laser beam is not displaced from the original beam direction or position. The beam scanner may be inserted into an existing optical resonator, for example, without modifications thereto.

摘要翻译： 本发明是用于频率转换的非线性光学晶体使用的光束扫描器。 扫描器振荡通过晶体的高功率激光束，以减少热损伤，并且不会在离开扫描仪时改变光束的方向或位置。 一对厚的光学板固定在平行于激光束方向的从动轴上。 第一板以相对于轴的给定角度安装，并且第二板以与轴相同但负角的方式安装，使得它们是围绕晶体的镜像。 当轴旋转时，激光束以圆柱形图案移动通过晶体，并且由于安装板的方式，出射的激光束不会从原始的光束方向或位置移位。 光束扫描器可以插入到现有的光学谐振器中，例如，不对其进行修改。

公开(公告)号：US08472486B1

公开(公告)日：2013-06-25

申请号：US13211385

申请日：2011-08-17

申请人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

发明人： Leanne J. Henry ,  Thomas M. Shay ,  Gerald T. Moore ,  Jacob R. Grosek

IPC分类号： H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06725 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/0826 ,  H01S3/10092 ,  H01S3/1053 ,  H01S3/1055 ,  H01S3/108 ,  H01S3/1086 ,  H01S3/1655 ,  H01S3/2316 ,  H01S3/30 ,  H01S5/5027

摘要： A method of generating high-power laser output in the 1100 to 1500 um spectral region having a controllable linewidth. A Raman amplifier comprised of one or more nested pairs of fiber Bragg grating cavities tuned to the 1st, 2nd, . . . N−1st order Stokes wavelengths is seeded with both the desired Nth order Stokes output wavelength and the corresponding zeroth-order Stokes pump wavelength. As the pump wavelength propagates through the apparatus, it is sequentially converted to the 1st, 2nd, . . . N−1st order Stokes wavelengths in the nested fiber Bragg grating cavities. The desired Nth order Stokes output wavelength is then amplified by the N−1st Stokes order as it propagates through the nested fiber Bragg grating cavities. The linewidths of various Stokes orders can be controlled through adjusting resonant bandwidths of the fiber Bragg grating cavities by offsetting, through heating, the reflectivity bandwidths of each pair of cavity gratings.

摘要翻译： 在具有可控线宽的1100至1500um光谱区域中产生高功率激光输出的方法。 一个拉曼放大器由一个或多个嵌套的光纤布拉格光栅腔对组成，调谐到第一，第二，第二。 。 。 N-1阶斯托克斯波长用所需的第N阶斯托克斯输出波长和相应的零阶斯托克斯泵波长接种。 随着泵浦波长传播通过设备，它被依次转换为第1，第2。 。 。 N-1阶在嵌套光纤布拉格光栅腔中的斯托克斯波长。 然后，所需的第N阶斯托克斯输出波长通过N-1st斯托克斯次序通过嵌套光纤布拉格光栅腔进行放大。 可以通过调整光纤布拉格光栅腔的谐振带宽来控制各种斯托克斯次数的线宽，这是通过加热来抵消每对腔光栅的反射带宽。