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    ARCHITECTURE FOR HIGH-POWER THULIUM-DOPED FIBER AMPLIFIER
    15.
    发明申请
    ARCHITECTURE FOR HIGH-POWER THULIUM-DOPED FIBER AMPLIFIER 有权

    公开(公告)号：US20230119153A1

    公开(公告)日：2023-04-20

    申请号：US17505472

    申请日：2021-10-19

    Applicant: Raytheon Company

    Inventor： Fabio Di Teodoro

    IPC: H01S3/067

    Abstract: A system includes multiple first thulium-doped fiber lasers each configured to generate pumplight. The system also includes a second thulium-doped fiber laser configured to receive the pumplight from the first thulium-doped fiber lasers and a seed signal. The second thulium-doped fiber laser is also configured to amplify the seed signal using the pumplight. The first thulium-doped fiber lasers are configured to forward-pump the second thulium-doped fiber laser. The second thulium-doped fiber laser includes a fiber gain medium, where the fiber gain medium includes a core doped with thulium and a cladding. The fiber gain medium is longitudinally up-tapered such that a diameter of the core and a diameter of the cladding increase along at least a portion of a length of the fiber gain medium.

    Optical system architecture
    17.
    发明授权
    Optical system architecture 有权

    公开(公告)号：US11372309B2

    公开(公告)日：2022-06-28

    申请号：US16809167

    申请日：2020-03-04

    Applicant: Raytheon Company

    Inventor： Fabio Di Teodoro

    IPC: H01S3/00 ,  G02F1/35 ,  H01S3/067 ,  H01S3/106

    Abstract: An example optical system architecture includes a diode laser source having an optical fiber. The diode laser source is configured to generate an optical signal having a main mode and side longitudinal modes and to output the optical signal along an optical path. An optical filter is in the optical path. The optical filter is configured to receive at least part of the optical signal, to output the main mode along the optical path, and to suppress the side longitudinal modes at least in part. One or more optical amplifiers are in the optical path after the optical filter. The one or more optical amplifiers are configured to receive at least part of the main mode, to amplify the at least part of main mode, and to output an amplified version of the at least part of main mode along the optical path.

    COMPACT TRANSFORM OPTICS FOR SPECTRAL BEAM COMBINING
    18.
    发明申请
    COMPACT TRANSFORM OPTICS FOR SPECTRAL BEAM COMBINING 审中-公开

    公开(公告)号：US20200209635A1

    公开(公告)日：2020-07-02

    申请号：US16232184

    申请日：2018-12-26

    Applicant: RAYTHEON COMPANY

    Inventor： Kyle Heideman ,  Tim P. Johnson ,  Todd O. Clatterbuck ,  John Edgecumbe ,  Fabio Di Teodoro ,  Maurice J. Halmos

    IPC: G02B27/10 ,  G02B27/09 ,  G02B17/06

    Abstract: Spectral beam combining systems including a multi-element transform optic. In certain examples the multi-element transform optic includes a first cylindrical optical element having positive optical power in a first axis, a second optical element having negative optical power in the first axis, and a third toroidal optical element having positive optical power in the first axis and either positive or negative optical power in a second axis that is orthogonal to the first axis. The first and third optical elements are positioned on opposite sides of the second optical element and equidistant from the second optical element. The multi-element transform optic has an optical path length extending between a front focal plane and a back focal plane that is shorter than an effective focal length of the multi-element transform optic.

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