Free electron and cyclotron resonance distributed feedback lasers and
masers
    3.
    发明授权
    Free electron and cyclotron resonance distributed feedback lasers and masers 失效
    自由电子和回旋共振分布反馈激光器和主体

    公开(公告)号:US4661783A

    公开(公告)日:1987-04-28

    申请号:US244947

    申请日:1981-03-18

    CPC分类号: H01S3/0903 H01J25/025

    摘要: Free-electron lasers and masers are modified by eliminating the resonator cavity as such. The feedback mechanism, essential to oscillation, is distributed through and integrated with the transmission line which guides the electromagnetic wave at the active region where interaction with the electron beam takes place. The feedback structure is created by perturbations in the transmission line along the length thereof at the locations of the zero electric field lines of a desired oscillatory standing wave mode. The perturbations may take the form of axial, helical, and azimuthal deformation of the transmission line.

    摘要翻译: 通过消除谐振器腔这样修改自由电子激光器和电容器。 对振荡至关重要的反馈机制分布在与电子束相互作用的有源区域引导电磁波的传输线并与之集成。 反馈结构是通过在所期望的振荡驻波模式的零电场线的位置沿其长度的传输线中的扰动产生的。 扰动可能采取传输线的轴向,螺旋和方位角变形的形式。

    Complex cavity gyrotron
    4.
    发明授权
    Complex cavity gyrotron 失效
    复腔回旋加速器

    公开(公告)号:US4554484A

    公开(公告)日:1985-11-19

    申请号:US527626

    申请日:1983-08-29

    IPC分类号: H01J25/02 H01J25/00

    CPC分类号: H01J25/025 Y10S505/88

    摘要: A complex cavity gyrotron designed for stable operation at high order modes. The device comprises circuitry for generating an annular electron beam, a coupled cavity disposed coaxially with the electron beam and having a first and second adjacent coaxial sections with the dimensions of these coaxial sections adjusted so that different modes with the same azimuthal eigen number but different radial eigen numbers are simultaneously resonant at approximately the same frequency in the two sections, and circuitry for generating an axial magnetic field within the cavity. Few, if any, combinations of modes other than the combination chosen will simultaneously resonate in the cavity thereby effecting higher order mode suppression. The present design has a low susceptibility to beam velocity spread and is effective for any combination of modes with identical azimuthal eigen numbers.

    摘要翻译: 一个复杂的腔室陀螺仪设计用于在高阶模式下稳定运行。 该装置包括用于产生环形电子束的电路,与电子束同轴设置的耦合腔,并且具有第一和第二相邻的同轴部分,其中这些同轴部分的尺寸被调整为使得具有相同方位角本征数但不同径向的不同模式 特征号在两个部分中以大致相同的频率同时谐振,以及用于在腔内产生轴向磁场的电路。 如果有的话,除了所选择的组合以外的模式的组合将在空腔中同时共振,从而实现更高阶模式抑制。 本设计对光束速度扩展的敏感度低,并且对于具有相同方位角本征数的模式的任何组合是有效的。