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    Adaptive Spatio-Temporal Optical Pulse Shaper
    1.
    发明公开
    Adaptive Spatio-Temporal Optical Pulse Shaper 审中-公开

    公开(公告)号：US20230163549A1

    公开(公告)日：2023-05-25

    申请号：US18050063

    申请日：2022-10-27

    申请人： The Government of the United States of America, as represented by the Secretary of the Navy

    发明人： Michael H. Helle

    IPC分类号： H01S3/00

    CPC分类号： H01S3/0057

    摘要： A fully programmable laser field shaping apparatus that can configure a beam of laser pulses in both shape and time to generate laser pulses with varying spatio-temporal profiles for adaptive nonlinear optical propagation. The laser field shaping scheme in accordance with the present invention, Adaptive Spatio-Temporal Optical Pulse Shaper (A-STOPS), utilizes dispersive elements and a programmable spatial varying optical element (e.g. deformable mirror, spatial light modulator, etc.) to impose spatial variations on each frequency component of a laser pulse. Each frequency component maps directly to a temporal slice within a chirped laser pulse. The result is the ability to generate complex spatio-temporal variation on a laser pulse with wide ranging applications in linear and nonlinear optics.

    Colliding Jets Laser Guiding Structure
    5.
    发明申请
    Colliding Jets Laser Guiding Structure 有权
    碰撞喷射激光导向结构

    公开(公告)号：US20160345420A1

    公开(公告)日：2016-11-24

    申请号：US15152627

    申请日：2016-05-12

    申请人： The Government of the United States of America, as represented by the Secretary of the Navy

    发明人： Dmitri Kaganovich ,  Michael H. Helle ,  John Palastro ,  Antonio C. Ting ,  Daniel F. Gordon ,  Yu-hsin Chen

    IPC分类号： H05H1/48

    CPC分类号： H05H1/48 ,  G21B3/008 ,  H05H1/00 ,  H05H1/24 ,  H05H1/54 ,  H05H15/00

    摘要： A plurality of gas jet nozzles having equal angular separation around a central axis eject gas flows towards the central axis. The gas flows collide and form a gas channel from the neutral gas, the gas channel having a gas density depression at the center of the intersecting gas flow, where the gas density depression is surrounded by a higher density gaseous wall along the central axis. Ionization of the gas in the center produces a plasma channel that can guide a laser pulse fired into the gas along the central axis. The geometric arrangement of the gas jets and/or the backing pressure of the gas flows are configured to produce a gas channel having a predetermined density profile such that the ionized gas forms a plasma channel laser guiding structure configured to guide a laser pulse having predetermined spatial parameters.

    摘要翻译： 多个具有围绕中心轴线等角度分离的喷气喷嘴朝向中心轴线流动。 气体流动从中性气体碰撞并形成气体通道，气体通道在交叉气流的中心处具有气体密度下降，其中气体密度凹陷沿着中心轴线被较高密度的气体壁包围。 中心处的气体的离子化产生等离子体通道，该等离子体通道可沿着中心轴引导激发到气体中的激光脉冲。 气流的几何布置和/或气流的背压被配置成产生具有预定密度分布的气体通道，使得电离气体形成等离子体通道激光引导结构，其被配置为引导具有预定空间的激光脉冲 参数。