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1. 发明申请

WO2023278019A1 THERMALLY ACTUATED ADAPTIVE OPTICS 审中-公开
公开(公告)号：WO2023278019A1
公开(公告)日：2023-01-05
申请号：PCT/US2022/029251
申请日：2022-05-13
申请人： COHERENT, INC.
发明人： HERTWIG, Michael , MURDOCH, Keith, M.
IPC分类号： G02B26/08
摘要： A thermally actuated adaptive optic includes a base, a reflector, and a plurality of actuators coupled therebetween. The reflector has a light-receiving front surface, and a back surface facing the base. Each actuator includes a bracket rigidly bonded to the reflector at a perimeter of the reflector, and an inner rod and. an outer rod. Each rod is rigidly connected between the bracket and the base, with the inner rod being closer to a center of the reflector. The length of each rod is temperature dependent. In another adaptive optic, the rods are instead bonded directly to the reflector. This adaptive optic may be modified to implement an integrally formed, thermally actuated support. The disclosed adaptive optics are suitable for use in laser systems, allow for significant cost savings over piezoelectric devices, provide a reflective area free of surface-figure perturbations caused by the actuator- interfaces, and are relatively simple to manufacture.

2. 发明申请

WO2021016004A1 LASER WAVELENGTH STABILIZATION APPARATUS 审中-公开
公开(公告)号：WO2021016004A1
公开(公告)日：2021-01-28
申请号：PCT/US2020/042011
申请日：2020-07-14
申请人： COHERENT, INC.
发明人： SHU, Qize
IPC分类号： H01S5/00 , H01S3/13 , H01S5/065 , H01S5/0687 , H01S3/137 , H01S3/139 , H01S3/08
摘要： A wavelength sensor for wavelength stabilization of a laser beam includes an etalon placed in the laser beam and tilted with respect to the laser beam. Reflected beams from the etalon form an interference pattern on a segmented photodetector having two detector segments. Output signals from the two detector segments are used to derive an error signal for a closed control loop to effect the wavelength stabilization.

3. 发明申请

WO2020214713A1 FIBER POLARIZATION SCRAMBLER 审中-公开
公开(公告)号：WO2020214713A1
公开(公告)日：2020-10-22
申请号：PCT/US2020/028333
申请日：2020-04-15
申请人： NUFERN
发明人： UNDERWOOD III, Mitchell
IPC分类号： H01S3/00
摘要： An optical apparatus for depolarizing a laser beam within a fiber MOP A laser is disclosed. The apparatus includes a first phase modulator for spectral broadening, a linear polarizer, an optical coupler, a second phase modulator for depolarizing the laser beam, and a polarization-maintaining optical fiber. The optical coupler divides a linearly-polarized portion of the laser beam equally between fast and slow axes of the second phase modulator. The laser beam delivered by the polarization-maintaining optical fiber is truly unpolarized. The apparatus provides independent control of the spectral broadening and the depolarization to mitigate stimulated Brillouin scattering during subsequent amplification. A method for depolarizing a laser beam, using this apparatus, is also disclosed.

4. 发明申请

WO2019200218A3 LARGE-DYNAMIC-RANGE FIBER OPTIC GYROSCOPE 审中-公开
公开(公告)号：WO2019200218A3
公开(公告)日：2019-10-17
申请号：PCT/US2019/027164
申请日：2019-04-12
申请人： NUFERN
发明人： KHAN, Jan Amir , PAQUETTE, David
IPC分类号： G01C19/72
摘要： A method for operating a fiber optic gyroscope to measure angular velocity uses a closed-loop modulation scheme. Two-state modulation voltages are applied to an optical modulator and continuously adjusted to maintain a null difference between corresponding demodulated voltages from a photodetector. If one of the modulation voltages reaches a threshold voltage, the continuous nulling adjustment is interrupted briefly while the two-state modulation voltages are reset to values that correspond to relative phases of π/2 and - π/2 when the gyroscope is stationary, then the continuous adjustment is resumed. This reoccurring resetting, while the gyroscope accelerates or decelerates, substantially increases the dynamic range over which the gyroscope can precisely measure angular velocity.

5. 发明申请

WO2019200218A2 LARGE-DYNAMIC-RANGE FIBER OPTIC GYROSCOPE 审中-公开
公开(公告)号：WO2019200218A2
公开(公告)日：2019-10-17
申请号：PCT/US2019/027164
申请日：2019-04-12
申请人： NUFERN
发明人： KHAN, Jan Amir , PAQUETTE, David
IPC分类号： G01C19/72
摘要： A method for operating a fiber optic gyroscope to measure angular velocity uses a closed-loop modulation scheme. Two-state modulation voltages are applied to an optical modulator and continuously adjusted to maintain a null difference between corresponding demodulated voltages from a photodetector. If one of the modulation voltages reaches a threshold voltage, the continuous nulling adjustment is interrupted briefly while the two-state modulation voltages are reset to values that correspond to relative phases of π/2 and - π/2 when the gyroscope is stationary, then the continuous adjustment is resumed. This reoccurring resetting, while the gyroscope accelerates or decelerates, substantially increases the dynamic range over which the gyroscope can precisely measure angular velocity.

6. 发明申请

WO2018067656A8 AORTIC LEAFLET REPAIR USING SHOCK WAVE APPLICATORS 审中-公开
标题翻译：使用冲击波施加器进行牙冠叶片修复
公开(公告)号：WO2018067656A8
公开(公告)日：2018-04-12
申请号：PCT/US2017/055070
申请日：2017-10-04
申请人： SHOCKWAVE MEDICAL, INC.
发明人： BETELIA, Rainier , NGUYEN, Hoa D. , SAAIBI, Camilo Perez
IPC分类号： A61B17/22
摘要： Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.
摘要翻译：这里描述的是用于治疗钙化心脏瓣膜的冲击波装置和方法。冲击波装置的一个变型可以包括由护套承载的细长柔性管。该管可以具有流体输入端，其可以位于护套的近端附近。该管可以包括环部分。环部分可以被构造成至少部分地容纳在心脏瓣膜的尖端内。该管可以用导电流体填充。在一些变型中，冲击波装置可以包括与位于管的环部分内的多根导线相关联的电极对的阵列。电极对可以电连接到电压源并且被配置为响应于电压脉冲而在导电流体中产生冲击波。

7. 发明申请

WO2018063939A1 LASER POWER AND ENERGY SENSOR USING ANISOTROPIC THERMOELECTRIC MATERIAL 审中-公开
标题翻译：激光功率和能量传感器的各向异性热电材料
公开(公告)号：WO2018063939A1
公开(公告)日：2018-04-05
申请号：PCT/US2017/053026
申请日：2017-09-22
申请人： COHERENT, INC.
发明人： KROUS, Krik , LOUNSBURY, Jimson , IMAMURA, Joseph , SCHLOSS, James
IPC分类号： G01J1/02 , G01J1/42 , G01J1/04 , G01J5/04 , G01J5/06 , G01J5/12
CPC分类号： G01J1/0407 , G01J1/0214 , G01J1/0252 , G01J1/0271 , G01J1/0414 , G01J1/42 , G01J1/4257 , G01J5/046 , G01J5/061 , G01J5/12 , G01K17/003 , H01L31/0368
摘要： A laser-radiation detector is formed from a plurality of layers supported on a substrate. The plurality of layers includes a reflective metal layer and an oriented polycrystalline sensor-layer positioned between the metal layer and the substrate.
摘要翻译：激光辐射检测器由支撑在衬底上的多个层形成。多个层包括反射金属层和定位在金属层和衬底之间的定向多晶传感器层。

8. 发明申请

WO2018022331A1 APPARATUS FOR GENERATING A LINE-BEAM FROM A DIODE-LASER ARRAY 审中-公开
标题翻译：用于从二极管激光阵列产生线束的装置
公开(公告)号：WO2018022331A1
公开(公告)日：2018-02-01
申请号：PCT/US2017/042229
申请日：2017-07-14
申请人： COHERENT, INC.
发明人： ZHANG, Rui , CAPRARA, Andrea
IPC分类号： G02B27/09 , G02B19/00 , H01S5/40
摘要： An apparatus for generating a line beam (26) includes a diode laser bar (20), a linear microlens array (34) and a plurality of lenses (30, 32, 36, 38) spaced apart and arranged along an optical axis. The linear microlens array (34) and the lenses (30, 32, 36, 38) shape laser radiation emitted by the diode laser bar (20) to form a uniform line beam (26) in an illumination plane (28). The lenses (30, 32, 36, 38) project a far-field image of the diode laser bar (20) onto an image plane (62) proximate to the illumination plane (28). The diode laser bar (20) is rotated from parallel alignment with the linear microlens array (34) for providing uniform line beam illumination over a range of locations along the optical axis.
摘要翻译：用于产生线光束（26）的装置包括二极管激光器条（20），线性微透镜阵列（34）和间隔开的多个透镜（30,32,36,38）并沿着光轴排列。线性微透镜阵列（34）和透镜（30,32,36,38）整形由二极管激光器条（20）发射的激光辐射，以在照明平面（28）中形成均匀的线光束（26）。透镜（30,32,36,38）将二极管激光条（20）的远场图像投影到靠近照射平面（28）的图像平面（62）上。二极管激光器条（20）从与线性微透镜阵列（34）平行对齐的位置旋转，以在沿着光轴的一系列位置上提供均匀的线光束照明。

9. 发明申请

WO2018017396A1 ACHROMATIC ANASTIGMATIC ANAMORPHIC PROJECTION OBJECTIVE FOR FOCUSING LASER BEAMS 审中-公开
标题翻译：用于聚焦激光束的无色散性反射投影目标
公开(公告)号：WO2018017396A1
公开(公告)日：2018-01-25
申请号：PCT/US2017/042007
申请日：2017-07-13
申请人： COHERENT, INC.
发明人： MENG, Lei , WINZ, Michele, Wayne
IPC分类号： G02B9/16 , G02B13/00 , G02B27/09 , G01N15/14 , A61B18/20 , G02B13/08
CPC分类号： G02B13/08 , A61B5/0071 , G01N15/1434 , G01N2015/1438 , G01N2015/1452 , G02B9/16 , G02B13/0035 , G02B27/0905 , G02B27/0911 , G02B27/0966 , G02B27/1006 , G02B27/145
摘要： In a flow cytometer, an objective lens (20) focuses in a common plane (P) an input laser-beam having four different wavelengths. The objective (20) consists of three single-lenses (CL1, CL2, FFL), the two first ones (CL1, CL2) being cylindrical for shaping and reducing the size of the input laser-beam, the third one (FFL) being spherical to focus the reduced-size laser-beam in the common plane (P).
摘要翻译：在流式细胞仪中，物镜（20）将具有四个不同波长的输入激光束聚焦在公共平面（P）中。物镜（20）由三个单透镜（CL1，CL2，FFL）组成，两个第一个透镜（CL1，CL2）为圆柱形，用于成形和减小输入激光束的尺寸，第三个（FFL）球形以将缩小尺寸的激光束聚焦在共同平面（P）中。

10. 发明申请

WO2017139077A1 COOLING APPARATUS FOR DIODE-LASER BARS 审中-公开
标题翻译：二极管激光棒的冷却装置
公开(公告)号：WO2017139077A1
公开(公告)日：2017-08-17
申请号：PCT/US2017/014063
申请日：2017-01-19
申请人： COHERENT, INC.
发明人： GUINN, Keith, V.
IPC分类号： H01S5/024 , F28F3/08 , H01S5/40
CPC分类号： H01S5/02423 , F28F3/086 , H01L23/473 , H01S5/4025
摘要： A cooler for diode-laser bars comprises a machined base including a water- input plenum and a water-output plenum, and a top plate on which the diode-laser bars can be mounted. A stack of three etched plates is provided between the base and first plate. The stack of etched plates is configured to provide a five longitudinally spaced- apart rows of eight laterally spaced-apart cooling-channels connected to the water-input and water-output plenums. Water flows in the cooling-channels and in thermal contact with the first plate.
摘要翻译：用于二极管激光器条的冷却器包括机加工的基座，该基座包括水输入增压室和水输出增压室，以及可以安装二极管激光器条的顶板。在底座和第一板之间提供一叠三块蚀刻板。蚀刻板的堆叠被配置为提供五个纵向间隔开的八行横向间隔开的冷却通道，其连接到水输入增压室和水输出增压室。水流入冷却通道并与第一块板热接触。

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