公开(公告)号：US20130336344A1

公开(公告)日：2013-12-19

申请号：US13495374

申请日：2012-06-13

申请人： Stephen P. Palese ,  Eric C. Cheung ,  Gregory D. Goodno ,  Chun-Ching Shih ,  Mark E. Weber

发明人： Stephen P. Palese ,  Eric C. Cheung ,  Gregory D. Goodno ,  Chun-Ching Shih ,  Mark E. Weber

IPC分类号： H01S3/10

CPC分类号： H01S3/2383 ,  H01S3/0085 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2308

摘要： A pulsed fiber array laser system that has actively stabilized coherent beam combination (CBC) is disclosed. The active stabilization is accomplished using both piston phase control and intra-pulse phase control, allowing a much greater increase in pulse energy. Further stabilization using intra-pulse amplitude control is also disclosed. A chirp profile can be written on the output pulse to enable specific applications. An amplitude profile of the amplifier array may optionally be tailored to match to a reference electrical pulse. Using the current invention, a much smaller number of amplifier chains will be needed to achieve certain pulse energy, resulting in a system with lower complexity, lower cost, smaller size, less weight, and higher reliability.

摘要翻译： 公开了一种具有主动稳定的相干光束组合（CBC）的脉冲光纤阵列激光系统。 主动稳定是使用活塞相位控制和脉冲内相位控制来实现的，允许脉冲能量增加更多。 还公开了使用脉冲内幅度控制的进一步的稳定化。 可以在输出脉冲上写入啁啾曲线，以实现特定应用。 可以可选地调整放大器阵列的幅度分布以匹配参考电脉冲。 使用本发明，需要更少数量的放大器链来实现某些脉冲能量，从而导致具有较低复杂性，较低成本，较小尺寸，较小重量和更高可靠性的系统。

公开(公告)号：US20090324170A1

公开(公告)日：2009-12-31

申请号：US12215293

申请日：2008-06-26

申请人： Eric C. Cheung ,  Stephen P. Palese

发明人： Eric C. Cheung ,  Stephen P. Palese

IPC分类号： G02B6/32 ,  G02B6/34

CPC分类号： G02B6/2931 ,  G02B5/09 ,  G02B6/29311 ,  G02B6/29373 ,  G02B6/2938 ,  G02B27/1006 ,  G02B27/1086

摘要： A method of spectral beam combining comprising the steps of projecting a plurality of laser beamlets of different wavelengths onto a first spectrally dispersive element, spatially chirping the plurality of beamlets via the first spectrally dispersive element, rearranging the spatially chirped beamlets with a beam redirecting element, and combining the beamlets into a single output beam via a second spectrally dispersive element.

摘要翻译： 一种光谱光束组合的方法，包括以下步骤：将多个不同波长的激光束投影到第一光谱色散元件上，经由第一光谱色散元件空间啁啾多个子束，用光束重定向元件重新排列空间啁啾子束， 并且经由第二光谱色散元件将子束组合成单个输出光束。

公开(公告)号：US06768873B1

公开(公告)日：2004-07-27

申请号：US09586513

申请日：2000-06-02

申请人： Stephen P. Palese

发明人： Stephen P. Palese

IPC分类号： H04J1402

CPC分类号： H04B13/00 ,  H04B10/00

摘要： An optical communication system for communicating through a turbulent medium is disclosed. It includes an optical transmitter and an optical receiver. The optical receiver receives an optical signal containing information that fluctuates as it passes through a turbulent medium. It comprises a reflector for collecting the optical signal and for focusing it, a probe laser for generating an optical probe beam, an optical device having an OTM responsive to the focused optical signal and the probe beam and operative to change a characteristic of the probe beam, and optoelectronic detector means responsive to the changed characteristic and, operative to develop an output electrical signal representative of the information contained in the received optical signal.

摘要翻译： 公开了一种用于通过湍流介质通信的光通信系统。 它包括光发射机和光接收机。 光接收器接收包含当其通过湍流介质时波动的信息的光信号。 它包括用于收集光学信号并用于聚焦的反射器，用于产生光学探针光束的探针激光器，具有响应于聚焦的光学信号和探测光束的OTM的光学装置，并且可操作以改变探针光束的特性 以及响应于改变的特性的光电子检测器装置，并且可操作地产生表示所接收的光信号中包含的信息的输出电信号。

公开(公告)号：US06268956B1

公开(公告)日：2001-07-31

申请号：US09580726

申请日：2000-05-30

申请人： Hagop Injeyan ,  Carolyn S. Hoefer ,  Stephen P. Palese

发明人： Hagop Injeyan ,  Carolyn S. Hoefer ,  Stephen P. Palese

IPC分类号： H01S300

CPC分类号： H01S3/0602 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/0623 ,  H01S3/0625 ,  H01S3/063 ,  H01S3/08095 ,  H01S3/094053 ,  H01S3/094057 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1603 ,  H01S3/1643 ,  H01S3/2308 ,  H01S3/2383

摘要： An optical amplifier (20, 100) includes an elongated slab (22, 102) of solid state lapsing material, such as a rare earth doped yttrium-aluminum-garnet (YAG) slab. In order to provide a relatively increased absorption length and thus a higher overall efficiency, the optical amplifier (20, 100) in accordance with the present invention incorporates end pumping in which the pumped light is coaligned with the amplified light resulting in relatively longer absorption lengths and higher overall efficiencies. The coaligned pumped sources are directed to lateral faces of the slab (22, 102) which include footprints (41, 43, 108) or windows. In order to cause internal reflection of the pump beam along the lapsing axis, the end faces (28, 30, 110) are formed at about a 45° angle relative to the longitudinal axis which causes the pumped light to be reflected within the slab co-axially with amplified light. In order to confine the absorption of the pumped light to the center portion of the slab (22, 102), the slab (22, 102) may be formed from a composite material with the opposing end portions of the slab formed from an undoped host material while the center portion of the slab along the longitudinal axis is formed from a doped host material. Such a configuration provides relatively low residual thermal lensing with virtually no birefringence. In one embodiment, the pumping light from the diode arrays is coupled to the slab (22, 102) by way of lenses (54) or lens ducts (FIG. 1). In an alternate embodiment, the pumping light is coupled to the slab (22, 102) by way of optical fibers (104, 106). In yet another embodiment (FIG. 8), the pumping light and laser beams are interchanged forming a low-loss straight through slab with end pumped architecture.

摘要翻译： 光学放大器（20,100）包括固态收缩材料的细长板（22,102），例如稀土掺杂的钇 - 铝 - 石榴石（YAG）板。 为了提供相对增加的吸收长度并因此提供更高的总体效率，根据本发明的光放大器（20,100）包括端泵浦，其中泵浦的光与放大的光轴相结合，导致相对更长的吸收长度 并提高整体效率。 联合泵送源被引导到板坯（22,102）的侧面，其包括脚印（41,43,108）或窗口。 为了引起泵浦光束沿着折叠轴的内部反射，端面（28,30,110）相对于纵向轴线以大约45°的角度形成，这导致泵送的光在板坯co 用放大的光轴。 为了将抽吸光的吸收限制在板坯（22,102）的中心部分，板坯（22,102）可以由复合材料形成，其中板坯的相对端部由未掺杂的主体 而沿着纵向轴线的板坯的中心部分由掺杂的主体材料形成。 这种构造提供了相对较低的剩余热透镜，实际上没有双折射。 在一个实施例中，来自二极管阵列的泵浦光通过透镜（54）或透镜导管（图1）耦合到板坯（22,102）。 在替代实施例中，泵浦光通过光纤（104,106）耦合到板坯（22,102）。 在另一个实施例（图8）中，泵浦光和激光束互换形成具有末端泵浦结构的低损耗直通板。

公开(公告)号：US06580540B1

公开(公告)日：2003-06-17

申请号：US09587126

申请日：2000-06-02

申请人： Stephen P. Palese

发明人： Stephen P. Palese

IPC分类号： H04J1408

CPC分类号： G02F1/0126 ,  G02F1/0338 ,  G02F2201/205 ,  G02F2202/022 ,  G02F2203/50

摘要： A time compensation architecture for use with a plurality of optical signals is disclosed. It comprises means for receiving the plurality of optical signals, optical means for selectively delaying the propagation of each of the plurality of optical signals, and means for outputting the time delayed optical signals. The delay may be achieved by changing the indices of refraction or the material lengths of the elements and can either be an active or a passive compensation technique.

摘要翻译： 公开了一种用于多个光信号的时间补偿架构。 它包括用于接收多个光信号的装置，用于选择性地延迟多个光信号中的每一个的传播的光学装置，以及用于输出时间延迟的光信号的装置。 可以通过改变折射率或元件的材料长度来实现延迟，并且可以是有源或无源补偿技术。

公开(公告)号：US08786942B2

公开(公告)日：2014-07-22

申请号：US13495374

申请日：2012-06-13

申请人： Stephen P. Palese ,  Eric C. Cheung ,  Gregory D. Goodno ,  Chun-Ching Shih ,  Mark E. Weber

发明人： Stephen P. Palese ,  Eric C. Cheung ,  Gregory D. Goodno ,  Chun-Ching Shih ,  Mark E. Weber

IPC分类号： H04B10/17 ,  H01S3/23 ,  H01S3/067

CPC分类号： H01S3/2383 ,  H01S3/0085 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2308

摘要： A pulsed fiber array laser system that has actively stabilized coherent beam combination (CBC) is disclosed. The active stabilization is accomplished using both piston phase control and intra-pulse phase control, allowing a much greater increase in pulse energy. Further stabilization using intra-pulse amplitude control is also disclosed. A chirp profile can be written on the output pulse to enable specific applications. An amplitude profile of the amplifier array may optionally be tailored to match to a reference electrical pulse. Using the current invention, a much smaller number of amplifier chains will be needed to achieve certain pulse energy, resulting in a system with lower complexity, lower cost, smaller size, less weight, and higher reliability.

摘要翻译： 公开了一种具有主动稳定的相干光束组合（CBC）的脉冲光纤阵列激光系统。 主动稳定是使用活塞相位控制和脉冲内相位控制来实现的，允许脉冲能量增加更多。 还公开了使用脉冲内幅度控制的进一步的稳定化。 可以在输出脉冲上写入啁啾曲线，以实现特定应用。 可以可选地调整放大器阵列的幅度分布以匹配参考电脉冲。 使用本发明，需要更少数量的放大器链来实现某些脉冲能量，从而导致具有较低复杂性，较低成本，较小尺寸，较小重量和更高可靠性的系统。

公开(公告)号：US06570704B2

公开(公告)日：2003-05-27

申请号：US09808330

申请日：2001-03-14

申请人： Stephen P. Palese

发明人： Stephen P. Palese

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/0057 ,  H01S3/0078 ,  H01S3/2383

摘要： An apparatus is provided including a source of spectrally dispersed seed wavelengths optically coupled to an array of fibers. Laser diode pumps are optically coupled to the array of fibers for amplifying the wavelengths through the array. A computer controlled feedback loop intercouples the array of fibers and laser diode pumps, the source of seed wavelengths and/or phase modulators for maintaining the wavelengths and relative phases in the array of fibers to desired levels. A compressor is optically coupled to an end of the array of fibers so as to receive and overlap the wavelengths from the individual fibers of the array.

公开(公告)号：US06178040B1

公开(公告)日：2001-01-23

申请号：US09104477

申请日：1998-06-25

申请人： Hagop Injeyan ,  Randall J. St. Pierre ,  Stephen P. Palese

发明人： Hagop Injeyan ,  Randall J. St. Pierre ,  Stephen P. Palese

IPC分类号： H01S300

CPC分类号： H01S3/08095 ,  H01S3/0606 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/2316

摘要： An optical amplifier for use with a solid state laser which includes a pair of elongated slabs of a solid state lasing material, such as a rare earth doped yttrium-aluminum-garnet (YAG) crystal. Two embodiments of the invention are disclosed. In both embodiments of the invention, each of the elongated slabs is formed with a square or generally rectangular cross-section. The slabs are configured such that the longitudinal axes of the slabs are generally co-axial aligned and the slabs are orientated such that the major axis of the slabs are generally orthogonal. By configuring the two slabs to be orthogonal with respect to one another, the integrated thermal lens becomes azimuthally symmetric and can be compensated by a simple external lens. In addition, the negative lensing affect along the major axis of one slab is used to compensate for the positive lensing affect along the minor axis of the other slab and vice versa, thus minimizing the affects of the astigmatism. In an alternate embodiment of the invention, a dove prism is used to rotate the beam instead of rotation of the slabs.

摘要翻译： 一种用于固态激光器的光放大器，其包括一对固体激光材料的细长板，例如稀土掺杂的钇铝石榴石（YAG）晶体。 公开了本发明的两个实施例。 在本发明的两个实施例中，每个细长板形成有方形或大致矩形的横截面。 板坯构造成使得板坯的纵向轴线大体上同轴对齐，并且板坯被定向成使得板坯的长轴线大致正交。 通过将这两个平板相互配合，集成的热透镜变为方位角对称的，并且可以通过简单的外部透镜进行补偿。 此外，沿着一个板坯的长轴的负透镜影响用于补偿沿着另一个板坯的短轴的正透镜影响，反之亦然，从而最小化散光的影响。 在本发明的替代实施例中，使用鸽子棱镜来旋转梁而不是板的旋转。

公开(公告)号：US5991315A

公开(公告)日：1999-11-23

申请号：US146892

申请日：1998-09-03

申请人： Hagop Injeyan ,  Stephen P. Palese

发明人： Hagop Injeyan ,  Stephen P. Palese

IPC分类号： H01S3/113

CPC分类号： H01S3/113

摘要： A solid state saturable absorber (SSSA) is formed from a slab of solid state material, such as Cr.sup.4+ : YAG. Optical distortion caused by the absorption process can be minimized by confining absorption to portions of the solid state slab which can be cooled efficiently. In accordance with an important aspect of the invention, the use of the SSSA in accordance with the present invention allows the repetition rate, pulse width, and energy level of the laser output pulses to be controlled by way of optical pump sources, such as a diode array. The solid state slab material allows for zig-zag propagation and thus, averaging of the thermal gradients caused by absorption, optical pumping and cooling which results in relatively low thermal lensing with virtually no birefringence and therefore allows for passive Q-switching applications in relatively high brightness laser systems. In an alternate embodiment of the invention, a plurality of thin cells are stacked and immersed in an indexed matched cooling fluid in order to increase the absorption length while minimizing optical distortion.

摘要翻译： 固态饱和吸收体（SSSA）由诸如Cr4 +：YAG的固态材料板形成。 通过将吸收限制在可以有效冷却的固态板坯的部分上，可以最小化吸收过程引起的光学变形。 根据本发明的一个重要方面，根据本发明的SSSA的使用允许激光输出脉冲的重复频率，脉冲宽度和能量水平通过光泵来控制，诸如 二极管阵列。 固态板材允许锯齿形传播，从而平均由吸收，光泵浦和冷却引起的热梯度，这导致相当低的热透镜，实际上没有双折射，因此允许在相对较高的无源Q开关应用 亮度激光系统。 在本发明的替代实施例中，多个薄电池被堆叠并浸入索引的匹配冷却流体中，以便增加吸收长度同时最小化光学失真。

公开(公告)号：US08903209B2

公开(公告)日：2014-12-02

申请号：US12215293

申请日：2008-06-26

申请人： Eric C. Cheung ,  Stephen P. Palese

发明人： Eric C. Cheung ,  Stephen P. Palese

IPC分类号： G02B6/34 ,  G02B6/26 ,  G02B6/28 ,  G02B6/293 ,  G02B5/09 ,  G02B27/10

CPC分类号： G02B6/2931 ,  G02B5/09 ,  G02B6/29311 ,  G02B6/29373 ,  G02B6/2938 ,  G02B27/1006 ,  G02B27/1086

摘要： A method of spectral beam combining comprising the steps of projecting a plurality of laser beamlets of different wavelengths onto a first spectrally dispersive element, spatially chirping the plurality of beamlets via the first spectrally dispersive element, rearranging the spatially chirped beamlets with a beam redirecting element, and combining the beamlets into a single output beam via a second spectrally dispersive element.

摘要翻译： 一种光谱光束组合的方法，包括以下步骤：将多个不同波长的激光束投影到第一光谱色散元件上，经由第一光谱色散元件空间啁啾多个子束，用光束重定向元件重新排列空间啁啾子束， 并且经由第二光谱色散元件将子束组合成单个输出光束。