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公开(公告)号：US20190097376A1
公开(公告)日：2019-03-28
申请号：US16200132
申请日：2018-11-26
申请人： FUJIFILM Corporation
发明人： Hiroyasu ISHII , Takatsugu WADA , Keiji TSUBOTA
CPC分类号： H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/061 , H01S3/0615 , H01S3/0623 , H01S3/0805 , H01S3/08054 , H01S3/092 , H01S3/0933 , H01S3/106 , H01S3/11 , H01S3/1611 , H01S3/1623 , H01S3/1625 , H01S3/1633 , H01S3/1636
摘要： Provided is a solid-state laser device in which a linear resonator including an output mirror and a rear mirror, a laser rod, and optical members are provided on a common base and are contained in a housing having the base as a portion. A holding part is provided to hold an excitation light source that extends parallel to the laser rod on a side of the laser rod opposite to the base. The optical members including a Q-switch are disposed between the laser rod and the rear mirror. An upper end position of the output mirror is at a position lower than a lower end position of the excitation light source held by the holding part, with the base as a reference. The holding part holds the excitation light source so as to be capable of being inserted and extracted with respect to the output mirror side in a longitudinal direction of the excitation light source.
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公开(公告)号：US20180175579A1
公开(公告)日：2018-06-21
申请号：US15884271
申请日：2018-01-30
IPC分类号： H01S3/08 , H01S3/0941 , C30B31/02 , H01S3/06 , H01S3/16 , H01S3/117 , H01S3/115 , H01S3/108 , H01S3/1055 , C30B31/00 , H01S3/094 , H01S3/00 , H01S3/113
CPC分类号： H01S3/0805 , C30B29/48 , C30B31/00 , C30B31/02 , H01S3/0014 , H01S3/0604 , H01S3/0617 , H01S3/0627 , H01S3/08009 , H01S3/08086 , H01S3/094038 , H01S3/094042 , H01S3/094046 , H01S3/09415 , H01S3/1055 , H01S3/108 , H01S3/113 , H01S3/115 , H01S3/117 , H01S3/162 , H01S3/1623 , H01S3/1628 , H01S2301/04 , Y10S438/917
摘要： A method of performing spatial separation of different wavelengths in a single laser cavity includes generating, from a pump radiation source, pump radiations in spatially separate channels and focusing the generated pump radiations in the spatially separate channels towards an active gain medium having amplification spectra. The method also includes emitting from the active gain medium, amplified radiations of the spatially separate channels, each channel of the spatially separate channels representing a corresponding wavelength and focusing the emitted amplified radiations of the spatially separated channels towards an aperture. The method further includes suppressing, at the aperture, an off-axis mode of the amplified radiations of the spatially separate channels, diffracting the amplified radiations of the spatially separate channels received through the aperture to provide diffracted radiations and returning a portion of the diffracted radiations back to the aperture, and collimating the diffracted radiations of the spatially separate channel.
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3.发明申请公开(公告)号：US20170373543A1
公开(公告)日：2017-12-28
申请号：US15591151
申请日：2017-05-10
申请人： WI-CHARGE LTD.
发明人： ORTAL ALPERT , RUDIGER PASCHOTTA
IPC分类号： H02J50/30 , H01S3/06 , H01S3/08 , H01S3/083 , H01S5/10 , H01S3/00 , H04B10/80 , H04B10/114 , H04B1/04 , H01S5/04 , H01S5/14 , H01S5/183 , H01S3/0941 , H01S3/13
CPC分类号： H02J50/30 , H01S3/005 , H01S3/0604 , H01S3/0805 , H01S3/08059 , H01S3/08072 , H01S3/083 , H01S3/0941 , H01S3/1307 , H01S5/041 , H01S5/10 , H01S5/14 , H01S5/183 , H04B10/114 , H04B10/807 , H04B2001/0416
摘要： An optical power beam transmission system, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.
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4.发明授权公开(公告)号：US09653949B2
公开(公告)日：2017-05-16
申请号：US15095373
申请日：2016-04-11
申请人： WI-CHARGE LTD.
发明人： Ortal Alpert , Rudiger Paschotta
IPC分类号： H04B1/02 , H02J50/30 , H01S3/00 , H01S3/083 , H04B10/114 , H04B10/80 , H01S5/10 , H01S3/08 , H01S3/06 , H04B1/04 , H01S5/04 , H01S5/14 , H01S3/0941 , H01S5/183 , H01S3/13
CPC分类号： H02J50/30 , H01S3/005 , H01S3/0604 , H01S3/0805 , H01S3/08059 , H01S3/08072 , H01S3/083 , H01S3/0941 , H01S3/1307 , H01S5/041 , H01S5/10 , H01S5/14 , H01S5/183 , H04B10/114 , H04B10/807 , H04B2001/0416
摘要： An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.
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公开(公告)号：US09627843B2
公开(公告)日：2017-04-18
申请号：US15146546
申请日：2016-05-04
申请人： Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V. , Ludwig-Maximilians-Universitaet Muenchen
发明人： Jinwei Zhang , Oleg Pronin , Jonathan Brons
CPC分类号： H01S3/1095 , H01S3/0604 , H01S3/0805 , H01S3/081 , H01S3/0811 , H01S3/0813 , H01S3/1068 , H01S3/1112 , H01S3/1618 , H01S3/1643
摘要： A method of generating fs laser pulses (1), includes steps of creating a circulating light field in a resonator cavity (10) with multiple resonator mirrors (11-18) by pumping at least one gain medium (21, 22) included in the resonator cavity (10), and passing the circulating light field through a first Kerr medium (31) included in the resonator cavity (10), so that the fs laser pulses (1) are formed by self-amplitude modulation of the circulating light field, wherein the resonator cavity (10) includes at least one supplementary Kerr medium (32-36) enhancing the self-amplitude modulation of the circulating light field, and each of the first Kerr medium (31) and the at least one supplementary Kerr medium (32-36) provide different non-linear Kerr lens contributions to the self-amplitude modulation of the circulating light field. Laser pulse source apparatus (100) for generating fs laser pulses (1) is also described.
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公开(公告)号：US09461434B2
公开(公告)日：2016-10-04
申请号：US14389247
申请日：2013-03-27
IPC分类号： H01S3/081 , H01S5/10 , H01S3/086 , H01S3/11 , H01S5/065 , H01S5/14 , H01S5/34 , H01S3/08 , H01S5/024 , H01S5/04 , H01S5/183 , H01S3/094
CPC分类号： H01S3/0813 , H01S3/0805 , H01S3/0817 , H01S3/086 , H01S3/094053 , H01S3/1112 , H01S5/02484 , H01S5/041 , H01S5/0657 , H01S5/1075 , H01S5/141 , H01S5/183 , H01S5/34
摘要： The present invention describes a self mode locking laser and a method for self mode locking a laser. The laser (1) comprises a resonator terminated by first (3) and second (4) mirrors and folded by a third mirror (5). The third mirror comprises a single distributed Bragg reflector (17) upon which is mounted a multilayer semiconductor gain medium (18) and which includes at least one quantum well layer and an optical Kerr lensing layer (22). Self mode locking may be achieved by configuring the laser resonator such that the lensing effect of the Kerr lensing layer acts to reduce an astigmatism deliberately introduced to the cavity mode. The self mode locking of the laser may be further enhanced by selecting the length of the resonator such that a round trip time of a cavity mode is matched with an upper-state lifetime of one or more semiconductor carriers located within the gain medium.
摘要翻译： 本发明描述了一种自锁式激光器和一种自锁式激光器的方法。 激光器（1）包括由第一（3）和第二（4）反射镜端接并由第三反射镜（5）折叠的谐振器。 第三反射镜包括单个分布式布拉格反射器（17），其上安装有多层半导体增益介质（18），并且其包括至少一个量子阱层和光学克尔透镜层（22）。 可以通过配置激光谐振器来实现自锁定，使得克尔透镜层的透镜效应用于减少有意引入空腔模式的象散。 可以通过选择谐振器的长度使得腔模式的往返时间与位于增益介质内的一个或多个半导体载体的上限寿命相匹配来进一步增强激光器的自锁定。
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公开(公告)号：US09325145B2
公开(公告)日：2016-04-26
申请号：US14708551
申请日：2015-05-11
发明人： George Neil , Michelle D. Shinn , Joseph Gubeli
CPC分类号： H01S3/0903 , H01S3/0805 , H01S3/08068 , H01S5/0286 , H01S5/18375
摘要： A method for improving the output beam quality of a free electron laser (FEL) by reducing the amount of emission at wavelengths longer than the electron pulse length and reducing the amount of edge radiation. A mirror constructed of thermally conductive material and having an aperture therein is placed at an oblique angle with respect to the beam downstream of the bending magnet but before any sensitive use of the FEL beam. The aperture in the mirror is sized to deflect emission longer than the wavelength of the FEL output while having a minor impact on the FEL output beam. A properly sized aperture will enable the FEL radiation, which is coherent and generally at a much shorter wavelength than the bending radiations, to pass through the aperture mirror. The much higher divergence bending radiations will subsequently strike the aperture mirror and be reflected safely out of the way.
摘要翻译： 一种通过减少长于电子脉冲长度的波长的发射量并减少边缘辐射量来改善自由电子激光器（FEL）的输出光束质量的方法。 由导热材料构成并在其中具有孔径的反射镜相对于弯曲磁体下游的光束倾斜地设置，但是在对FEL光束进行任何敏感的使用之前。 反射镜中的孔径的大小可使发射长于FEL输出的波长，同时对FEL输出光束有轻微的影响。 适当尺寸的孔将能够使相干且通常比弯曲辐射短得多的波长的FEL辐射通过孔径反射镜。 较高的发散弯曲辐射将随后撞击光圈镜并被安全地反射出来。
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8.发明授权公开(公告)号：US09312660B2
公开(公告)日：2016-04-12
申请号：US14016151
申请日：2013-09-02
申请人： WI-CHARGE LTD.
发明人： Ortal Alpert , Rudiger Paschotta
IPC分类号： H01J3/14 , G06M7/00 , H04B10/00 , H01S5/10 , H01S3/00 , H01S3/083 , H04B10/114 , H04B10/80 , H01S3/08 , H01S3/06 , H04B1/04 , H01S5/04 , H01S5/14 , H01S3/0941 , H01S5/183 , H01S3/13
CPC分类号： H02J50/30 , H01S3/005 , H01S3/0604 , H01S3/0805 , H01S3/08059 , H01S3/08072 , H01S3/083 , H01S3/0941 , H01S3/1307 , H01S5/041 , H01S5/10 , H01S5/14 , H01S5/183 , H04B10/114 , H04B10/807 , H04B2001/0416
摘要： An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.
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9.发明申请公开(公告)号：US20160094016A1
公开(公告)日：2016-03-31
申请号：US14502850
申请日：2014-09-30
发明人： Raymond J. Beach , Robert J. Deri , Michael A. Johnson , Jeffrey L. Klingmann , William A. Molander , Mark D. Rotter , Michael Runkel , Craig Siders , Sheldon S. Wu
CPC分类号： G02B27/46 , G02B3/0006 , G02B19/0028 , G02B19/0057 , G02B27/141 , G02B27/30 , G02B27/4233 , G02B27/4244 , G02B27/425 , G02B27/4255 , H01S3/0805 , H01S5/141 , H01S5/4031 , H01S5/405 , H01S5/4062 , H01S5/4068 , H01S2301/18
摘要： Techniques for increasing the spatial and spectral brightness of laser arrays such as laser diode arrays are provided. Passive cavity designs are described that produce wavefront phase locking across the face of large arrays. These designs enable both spatial and spectral selectivity in order to coherently link the individual emitters that make up the diode array. Arrays of customized micro-optics correct aberrations of the individual apertures of the arrays while highly spectrally selective partial reflectors overcome the deleterious effects of inhomogeneities in local thermal environments of the individual emitters that are being phase locked together. Using these two technologies, along with intracavity diffractive beam coupling, solves two long standing problems that have prevented effective and robust phase locking of laser diode arrays.
摘要翻译： 提供了增加激光二极管阵列等激光阵列的空间和光谱亮度的技术。 描述了在大阵列的表面上产生波前相位锁定的被动腔设计。 这些设计能够实现空间和光谱选择性，以便使构成二极管阵列的各个发射极相干连接。 定制的微光学阵列校正阵列的各个孔的像差，而高光谱选择性部分反射器克服了正在被锁相在一起的各个发射器的局部热环境中的不均匀性的有害影响。 使用这两种技术，以及腔内衍射光束耦合，解决了阻止激光二极管阵列的有效和鲁棒相位锁定的两个长期存在的问题。
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公开(公告)号：US20150366460A1
公开(公告)日：2015-12-24
申请号：US14737753
申请日：2015-06-12
发明人： Minoru Ohkoba , Shigeru Ichihara
IPC分类号： A61B5/00
CPC分类号： A61B5/0095 , A61B5/7203 , H01S3/0805 , H01S3/092 , H01S3/115 , H01S3/1317 , H01S3/1611 , H01S3/1623 , H01S3/1625 , H01S3/1633 , H01S3/1636 , H01S3/1643
摘要： Provided is an object information acquiring apparatus, comprising: a laser light source configured to irradiate laser light onto an object; a detector configured to detect a part of the laser light from the laser light source; a receiver configured to receive an acoustic wave that propagate from the object, based on the irradiation of the laser light; and an acquisition unit configured to acquire information relating to the object, based on a reception result of the receiver and a detection result of the detector, wherein the detector detects anomalous emission from the laser light source.
摘要翻译： 本发明提供一种对象信息取得装置，其特征在于，包括：激光源，被配置为将激光照射到物体上; 检测器，被配置为检测来自激光光源的激光的一部分; 接收器，被配置为基于激光的照射接收从物体传播的声波; 以及获取单元，被配置为基于所述接收机的接收结果和所述检测器的检测结果来获取与所述对象有关的信息，其中所述检测器检测来自所述激光源的异常发射。
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