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1. 发明申请

US20200350737A1 Systems, Apparatuses and Methods for Coherent Beam Combining of Fiber Laser Beams with Broadened Linewidth 审中-公开
公开(公告)号：US20200350737A1
公开(公告)日：2020-11-05
申请号：US16400096
申请日：2019-05-01
申请人： U.S. Army Research Laboratory
发明人： Leonid A. Beresnev , Kristan P. Gurton , David A. Ligon , Anthony R. Valenzuela , Chatt C. Williamson
IPC分类号： H01S3/00 , H01S3/067 , G02B27/09 , G02B27/10
摘要： A method, apparatus and system for coherent beam combining (CBC) in high energy fiber laser (HEL) systems include generating a reference interference pattern of a signal source including at least two single-mode optical signals, capturing and evaluating the reference interference pattern, maximizing an intensity of the selected area of the captured, reference interference pattern, increasing a linewidth of the optical signals generating the reference interference pattern until the reference interference pattern is degraded, and adjusting a delay time of one of the at least two single-mode optical signals until the reference interference pattern is recovered, by adjusting a value of a delay of a delayed RF signal with a broaden linewidth to a respective EO linewidth broadening modulator in at least one channel of the at least two single-mode optical signals while evaluating the interference pattern on a display device.

2. 发明授权

US10371906B1 Method and apparatus for delivering the fiber laser radiation into dynamical waveguide 有权
公开(公告)号：US10371906B1
公开(公告)日：2019-08-06
申请号：US15873143
申请日：2018-01-17
申请人： U.S. Army Research Laboratory
发明人： Leonid A. Beresnev , Anthony R. Valenzuela , Chatt C. Williamson
IPC分类号： G02B6/26 , G02B6/32 , G02B6/42 , G02B7/02 , H01S3/00 , H01S3/11 , H05H1/46 , G02B27/40 , H01S3/067
摘要： A technique for delivery of a divergent laser beam emitted with a free-space laser fiber facet, the beam having an optical power, into an optical waveguide. An optical axis of the laser beam is aligned approximately along a propagation Z direction into the optical waveguide. The fiber facet is located in a first plane perpendicular to the Z direction. The waveguide includes an input, direction, and X-Y position of the input in a second plane. The waveguide includes fluctuations in a X-Y-Z position of the input and fluctuations in direction. The laser beam is transformed into a collimated beam by re-directing a propagation of the laser beam, shifting the laser beam parallel to the Z direction, and focusing the laser beam into the input. The speed of transformation of the laser beam is greater than an instant speed of the fluctuations. A maximum optical power is delivered into the waveguide.

3. 发明申请

US20170038536A1 OPTICAL FIBER POSITIONER AND METHOD FOR MANUFACTURING SAME 有权
标题翻译：光纤定位器及其制造方法
公开(公告)号：US20170038536A1
公开(公告)日：2017-02-09
申请号：US14819621
申请日：2015-08-06
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev
IPC分类号： G02B6/36 , G02B6/35 , G02B6/26
CPC分类号： G02B6/3616 , G02B6/3508 , G02B6/3578 , G02B6/4219 , G02B6/422 , G02B26/103
摘要： An optical fiber positioner having an elongated base with sidewalls and a longitudinally extending throughbore. A flexible optical fiber extends through the throughbore and has one end protruding outwardly from an end surface of the base. A plurality of actuators are secured to the sidewalls of the base so that an end of each actuator is positioned adjacent the end of the base. A crossbeam is then connected to the ends of each actuator so that the crossbeam moves laterally relative to the base in unison with the deflection of the actuators. The crossbeam has an opening through which the optical fiber extends so that the optical fiber deflects in unison with the lateral movement of the crossbeam. Various fixtures for assembly of the optical fiber positioner are also shown.
摘要翻译：一种光纤定位器，具有具有侧壁和纵向延伸的通孔的细长基部。柔性光纤延伸穿过通孔，其一端从基座的端面向外突出。多个致动器被固定到基座的侧壁，使得每个致动器的端部邻近基座的端部定位。然后将横梁连接到每个致动器的端部，使得横梁相对于基座横向移动，与致动器的偏转一致。横梁具有开口，光纤通过该开口延伸，使得光纤与横梁的横向运动一致地偏转。还示出了用于组装光纤定位器的各种固定装置。

4. 发明申请

US20190219779A1 METHOD AND APPARATUS FOR DELIVERING THE FIBER LASER RADIATION INTO DYNAMICAL WAVEGUIDE 审中-公开
公开(公告)号：US20190219779A1
公开(公告)日：2019-07-18
申请号：US15873143
申请日：2018-01-17
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev , Anthony R. Valenzuela , Chatt C. Williamson
IPC分类号： G02B6/42 , H01S3/00 , G02B6/26 , G02B7/02 , G02B6/32 , G02B27/40
CPC分类号： G02B6/4225 , G02B6/262 , G02B6/32 , G02B6/4227 , G02B6/4296 , G02B7/02 , G02B27/40 , H01S3/005 , H01S3/06708 , H01S3/11 , H05H1/46
摘要： A technique for delivery of a divergent laser beam emitted with a free-space laser fiber facet, the beam having an optical power, into an optical waveguide. An optical axis of the laser beam is aligned approximately along a propagation Z direction into the optical waveguide. The fiber facet is located in a first plane perpendicular to the Z direction. The waveguide includes an input, direction, and X-Y position of the input in a second plane. The waveguide includes fluctuations in a X-Y-Z position of the input and fluctuations in direction. The laser beam is transformed into a collimated beam by re-directing a propagation of the laser beam, shifting the laser beam parallel to the Z direction, and focusing the laser beam into the input. The speed of transformation of the laser beam is greater than an instant speed of the fluctuations. A maximum optical power is delivered into the waveguide.

5. 发明申请

US20180275418A1 Disposing Aperture-Truncated Radiation of Divergent Beam Fiber Optic Collimators and Arrays 审中-公开
公开(公告)号：US20180275418A1
公开(公告)日：2018-09-27
申请号：US15464382
申请日：2017-03-21
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev , Anthony R. Valenzuela , Chatt C. Williamson
IPC分类号： G02B27/30 , G02B27/09 , G02B6/26 , F41H13/00
CPC分类号： G02B27/30 , F41H13/0062 , G02B6/262 , G02B6/32 , G02B27/0927 , G02B27/0961 , G02B27/0977
摘要： An optics system includes at least one emitting fiber tip that transmits a divergent beam. The divergent beam includes a global maximum intensify of radiation centered with an output optical axis. The divergent beam includes central beams for collimating and periphery beams for disposing. The periphery beams include parasitic radiation of the divergent beam. The optics system includes at least one collimating lens having an output size, output shape, and output optical axis centered thereto and configured to redirect the central beams to a target and redirect the periphery beams into free-space; and at least one redirecting element positioned in between the at least one emitting fiber tip and the at least one collimating lens. The redirecting element includes a first area having an interior size and interior shape to transmit the central beams, and at least one second area outside of the first area to transmit the periphery beams.

6. 发明授权

US09454004B2 Apparatus for coherent beam combining in an array of laser collimators 有权
标题翻译：用于激光准直仪阵列中相干光束组合的装置
公开(公告)号：US09454004B2
公开(公告)日：2016-09-27
申请号：US14039665
申请日：2013-09-27
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev , Jony J. Liu , Gary W. Carhart
IPC分类号： H01S3/13 , G02B27/09 , G02B27/00 , H01S3/23 , H01S3/00
CPC分类号： G02B27/0087 , H01S3/005 , H01S3/1307 , H01S3/2383
摘要： A method and apparatus for coherent beam combining in an array of laser beam collimators. The array of laser beam collimators includes an array of a plurality collimating lenses, each lens intercepting a respective one of a plurality of divergent laser beams. Each collimating lens is joined with adjacent collimating lenses such that an output aperture is formed with a common vertex of the adjacently joined collimating lenses. A concave mirror is positioned a distance from the common vertex for receiving a fraction of each of the collimated laser beams that passed through a portion of each of the collimating lenses that are adjacent to the common vertex, and then providing reflected fractional collimated laser beams. A sensor intercepts the reflected fractional collimated laser beams so as to provide a signal that is applied to synchronize the phase of each of the collimated laser beams.
摘要翻译：一种用于激光束准直仪阵列中相干光束组合的方法和装置。激光束准直仪的阵列包括多个准直透镜的阵列，每个透镜拦截多个发散激光束中的相应一个。每个准直透镜与相邻的准直透镜连接，使得输出孔形成有相邻接合的准直透镜的公共顶点。凹面镜与公共顶点定位一段距离，用于接收通过与公共顶点相邻的每个准直透镜的一部分的准直激光束的一部分，然后提供反射的分数准直激光束。传感器拦截反射的分数准直激光束，以便提供被施加以使每个准直激光束的相位同步的信号。

7. 发明申请

US20160231509A1 OPTICAL FIBER ASSEMBLY AND METHOD FOR MAKING SAME 审中-公开
标题翻译：光纤组件及其制造方法
公开(公告)号：US20160231509A1
公开(公告)日：2016-08-11
申请号：US14614694
申请日：2015-02-05
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev
IPC分类号： G02B6/36 , G02B6/38
CPC分类号： G02B6/3616 , G02B6/4248 , G02B6/4285 , G02B6/4296
摘要： A method for mounting an optical fiber within a tube in which the optical fiber is positioned through the tube so that a portion of the fiber protrudes outwardly from the distal end of the tube. A curable material, such as an adhesive, is then applied to the optical fiber portion which, upon curing, forms a flexible solid material having the refractive index less than refractive index of cladding material of said fiber optic. The outwardly protruding portion of the fiber is then retracted back into the tube so that the flexible solid material isolates the fiber portion from the tube. In addition, different clamping assemblies are provided for attaching protective sheathing for the optic fiber to a mount for the optic fiber which permit easy disassembly and removal.
摘要翻译：一种将光纤安装在管内的方法，其中光纤通过管定位，使得纤维的一部分从管的远端向外突出。然后将诸如粘合剂的可固化材料施加到光纤部分，其在固化时形成具有小于所述光纤的包层材料的折射率的折射率的柔性固体材料。然后将纤维的向外突出的部分缩回到管中，使得柔性固体材料将纤维部分与管隔离。此外，还提供了不同的夹紧组件，用于将用于光纤的保护性护套附接到用于光纤的安装座，从而易于拆卸和拆除。

8. 发明授权

US09632254B2 Optical fiber positioner and method for manufacturing same 有权
公开(公告)号：US09632254B2
公开(公告)日：2017-04-25
申请号：US14819621
申请日：2015-08-06
申请人： U.S. Army Research Laboratory
发明人： Leonid A. Beresnev
IPC分类号： G02B6/26 , G02B6/36 , G02B6/35
CPC分类号： G02B6/3616 , G02B6/3508 , G02B6/3578 , G02B6/4219 , G02B6/422 , G02B26/103
摘要： An optical fiber positioner having an elongated base with sidewalls and a longitudinally extending throughbore. A flexible optical fiber extends through the throughbore and has one end protruding outwardly from an end surface of the base. A plurality of actuators are secured to the sidewalls of the base so that an end of each actuator is positioned adjacent the end of the base. A crossbeam is then connected to the ends of each actuator so that the crossbeam moves laterally relative to the base in unison with the deflection of the actuators. The crossbeam has an opening through which the optical fiber extends so that the optical fiber deflects in unison with the lateral movement of the crossbeam. Various fixtures for assembly of the optical fiber positioner are also shown.

9. 发明申请

US20140231618A1 Apparatus for Coherent Beam Combining in an Array of Laser Collimators 有权
标题翻译：用于相干光束组合在激光准直器阵列中的装置
公开(公告)号：US20140231618A1
公开(公告)日：2014-08-21
申请号：US14039665
申请日：2013-09-27
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Leonid A. Beresnev , Jony J. Liu , Gary W. Carhart
IPC分类号： H01S3/13 , G02B27/09
CPC分类号： G02B27/0087 , H01S3/005 , H01S3/1307 , H01S3/2383
摘要： A method and apparatus for coherent beam combining in an array of laser beam collimators. The array of laser beam collimators includes an array of a plurality collimating lenses, each lens intercepting a respective one of a plurality of divergent laser beams. Each collimating lens is joined with adjacent collimating lenses such that an output aperture is formed with a common vertex of the adjacently joined collimating lenses. A concave mirror is positioned a distance from the common vertex for receiving a fraction of each of the collimated laser beams that passed through a portion of each of the collimating lenses that are adjacent to the common vertex, and then providing reflected fractional collimated laser beams. A sensor intercepts the reflected fractional collimated laser beams so as to provide a signal that is applied to synchronize the phase of each of the collimated laser beams.
摘要翻译：一种用于激光束准直仪阵列中相干光束组合的方法和装置。激光束准直仪的阵列包括多个准直透镜的阵列，每个透镜拦截多个发散激光束中的相应一个。每个准直透镜与相邻的准直透镜连接，使得输出孔形成有相邻接合的准直透镜的公共顶点。凹面镜与公共顶点定位一段距离，用于接收通过与公共顶点相邻的每个准直透镜的一部分的准直激光束的一部分，然后提供反射的分数准直激光束。传感器拦截反射的分数准直激光束，以便提供被施加以使每个准直激光束的相位同步的信号。

10. 发明授权

US11296477B2 Systems, apparatuses and methods for coherent beam combining of fiber laser beams with broadened linewidth 有权
公开(公告)号：US11296477B2
公开(公告)日：2022-04-05
申请号：US16400096
申请日：2019-05-01
申请人： U.S. Army Research Laboratory
发明人： Leonid A. Beresnev , Kristan P. Gurton , David A. Ligon , Anthony R. Valenzuela , Chatt C. Williamson
IPC分类号： H01S3/00 , G02B27/10 , G02B27/09 , H01S3/067 , H01S3/13 , H01S3/23 , H01S3/10
摘要： A method, apparatus and system for coherent beam combining (CBC) in high energy fiber laser (HEL) systems include generating a reference interference pattern of a signal source including at least two single-mode optical signals, capturing and evaluating the reference interference pattern, maximizing an intensity of the selected area of the captured, reference interference pattern, increasing a linewidth of the optical signals generating the reference interference pattern until the reference interference pattern is degraded, and adjusting a delay time of one of the at least two single-mode optical signals until the reference interference pattern is recovered, by adjusting a value of a delay of a delayed RF signal with a broaden linewidth to a respective EO linewidth broadening modulator in at least one channel of the at least two single-mode optical signals while evaluating the interference pattern on a display device.

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