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1.发明授权公开(公告)号：US09329416B2
公开(公告)日：2016-05-03
申请号：US14404221
申请日：2013-05-26
发明人： Dan Vadim Regelman , Yehonatan Segev , Shay Yosub
CPC分类号： G02F1/035 , G02B6/14 , G02F1/0115 , H01S3/067
摘要： The invention relates to adaptive optics techniques applied to alter the modal structure of light propagating in an optical fiber. In particular the invention relates to altering the modal structure in a multimode beam propagating in a multimode fiber by lowering the number of higher modes. The method comprises combining a wavefront sensor and/or a power sensor with a phase control actuator and actuator control algorithms, to alter the phase structure of the beam thereby to eliminate higher modes. The corrected beam can be then effectively coupled into a smaller diameter fiber with minimum loss of energy and concentrated to smaller spot sizes limited by diffraction.
摘要翻译： 本发明涉及应用于改变在光纤中传播的光的模式结构的自适应光学技术。 特别地，本发明涉及通过降低多模光纤的数量来改变在多模光纤中传播的多模光束中的模态结构。 该方法包括将波前传感器和/或功率传感器与相位控制致动器和致动器控制算法组合，以改变波束的相位结构从而消除更高的模式。 然后，校正的光束可以有效地耦合到具有最小能量损失的较小直径的光纤中，并且集中到由衍射限制的较小的光斑尺寸。
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公开(公告)号：US10337841B2
公开(公告)日：2019-07-02
申请号：US15502786
申请日：2015-07-02
发明人： Yehonatan Segev , Yochay Swirski , Shay Yosub , Yan Itovich
摘要： A directed energy weapon includes a number of laser units, each including a fiber laser generating an output beam with a power of at least 1 kW from a fiber, an objective lens arrangement for focusing the output beam into a focused beam directed towards a target, and a fine adjustment mechanism for adjusting a direction of the focused beam. A beam deflector arrangement is deployed to deflect a portion of the focused beam from each laser unit as a deflected beam in a direction in predefined relation to a direction of the focused beam. An angle sensing unit generates an output indicative of a current direction of said deflected beam for each of said laser units. A controller actuates the fine adjustment mechanisms based on the output from the angle sensing unit to maintain a desired relative alignment between directions of the focused beams.
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3.发明申请公开(公告)号：US20150131936A1
公开(公告)日：2015-05-14
申请号：US14404221
申请日：2013-05-26
发明人： Dan Vadim Regelman , Yehonatan Segev , Shay Yosub
CPC分类号： G02F1/035 , G02B6/14 , G02F1/0115 , H01S3/067
摘要： The invention relates to adaptive optics techniques applied to alter the modal structure of light propagating in an optical fiber. In particular the invention relates to altering the modal structure in a multimode beam propagating in a multimode fiber by lowering the number of higher modes. The method comprises combining a wavefront sensor and/or a power sensor with a phase control actuator and actuator control algorithms, to alter the phase structure of the beam thereby to eliminate higher modes. The corrected beam can be then effectively coupled into a smaller diameter fiber with minimum loss of energy and concentrated to smaller spot sizes limited by diffraction.
摘要翻译： 本发明涉及应用于改变在光纤中传播的光的模式结构的自适应光学技术。 特别地，本发明涉及通过降低多模光纤的数量来改变在多模光纤中传播的多模光束中的模态结构。 该方法包括将波前传感器和/或功率传感器与相位控制致动器和致动器控制算法组合，以改变波束的相位结构从而消除更高的模式。 然后，校正的光束可以有效地耦合到具有最小能量损失的较小直径的光纤中，并且集中到由衍射限制的较小的光斑尺寸。
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