Laser apparatus
    3.
    发明授权
    Laser apparatus 有权
    激光设备

    公开(公告)号:US08605762B2

    公开(公告)日:2013-12-10

    申请号:US13261394

    申请日:2011-02-10

    IPC分类号: H01S3/13

    摘要: Laser apparatus (1) comprising a reference source (2), a reference fiber (3), and at least one laser diode (4), wherein the reference fiber (3) comprises a core (5) having a refractive index n1 and a first cladding (6) having a refractive index n2, the first cladding (6) is surrounded by a second cladding (7) having a refractive index n3, the refractive index n1 is greater than the refractive index n2, the refractive index n2 is greater than the refractive index n3, the laser diode (4) emits laser radiation (8) that is guided through the first cladding (6) of the reference fiber (3), the reference source (2) emits reference radiation (9) that has a predetermined wavelength λR (10), the reference radiation (9) is guided through the core (5) of the reference fiber (3) to the laser diode (4), and the reference radiation (9) that is guided through the core (5) of the reference fiber (3) to the laser diode (4) has a power (11) at the predetermined wavelength λR (10), which power is greater than an injection locking threshold of the laser diode.

    摘要翻译: 包括参考源(2),参考光纤(3)和至少一个激光二极管(4)的激光设备(1),其中参考光纤(3)包括具有折射率n1的芯(5)和 第一包层(6)具有折射率n2,第一包层(6)由折射率n3的第二包层(7)包围,折射率n1大于折射率n2,折射率n2较大 激光二极管(4)发射通过参考光纤(3)的第一包层(6)引导的激光辐射(8),参考源(2)发射参考辐射(9),其具有 预定波长λR(10),参考辐射(9)被引导通过参考光纤(3)的芯(5)到激光二极管(4),并且被引导通过芯的参考辐射(9) 参考光纤(3)到激光二极管(4)的(5)具有处于预定波长λR(10)的功率(11) s大于激光二极管的注入锁定阈值。

    LASER APPARATUS
    4.
    发明申请
    LASER APPARATUS 有权
    激光装置

    公开(公告)号:US20120300797A1

    公开(公告)日:2012-11-29

    申请号:US13261394

    申请日:2011-02-10

    IPC分类号: H01S3/30

    摘要: Laser apparatus (1) comprising a reference source (2), a reference fibre (3), and at least one laser diode (4), wherein the reference fibre (3) comprises a core (5) having a refractive index n1 and a first cladding (6) having a refractive index n2, the first cladding (6) is surrounded by a second cladding (7) having a refractive index n3, the refractive index n1 is greater than the refractive index n2, the refractive index n2 is greater than the refractive index n3, the laser diode (4) emits laser radiation (8) that is guided through the first cladding (6) of the reference fibre (3), the reference source (2) emits reference radiation (9) that has a predetermined wavelength λR (10), the reference radiation (9) is guided through the core (5) of the reference fibre (3) to the laser diode (4), and the reference radiation (9) that is guided through the core (5) of the reference fibre (3) to the laser diode (4) has a power (11) at the predetermined wavelength λR (10), which power is greater than an injection locking threshold of the laser diode.

    摘要翻译: 包括参考源(2),参考光纤(3)和至少一个激光二极管(4)的激光设备(1),其中参考光纤(3)包括具有折射率n1的芯(5)和 第一包层(6)具有折射率n2,第一包层(6)由折射率n3的第二包层(7)包围,折射率n1大于折射率n2,折射率n2较大 激光二极管(4)发射通过参考光纤(3)的第一包层(6)引导的激光辐射(8),参考源(2)发射参考辐射(9),其具有 预定波长λR(10),参考辐射(9)通过参考光纤(3)的芯(5)被引导到激光二极管(4),并且通过芯引导的参考辐射(9) (3)的激光二极管(5)具有在预定波长λR(10)的功率(11),该功率是绿色的 r比激光二极管的注入锁定阈值。

    Polarization-dependent optical fibre amplifier
    6.
    发明授权
    Polarization-dependent optical fibre amplifier 有权
    偏振相关光纤放大器

    公开(公告)号:US07120339B2

    公开(公告)日:2006-10-10

    申请号:US10528895

    申请日:2003-09-25

    IPC分类号: G02B6/02

    摘要: An optical fibre including a waveguide and at least one stress applying region is described. The waveguide is defined by a numerical aperture, and the stress applying region is defined by a depressed refractive index. The optical fibre is configured such that the waveguide supports at least two polarised fundamental modes, two polarized first second-order modes, and two polarised second second-order modes. The waveguide includes comprises a gain medium. The stress applying region, the waveguide and the disposition of the gain medium are such as to provide preferential guidance to at least one of the modes at an operating wavelength.

    摘要翻译: 描述了包括波导和至少一个应力施加区域的光纤。 波导由数值孔径限定,并且应力施加区域由凹陷的折射率定义。 光纤被配置为使得波导支持至少两个极化基本模式,两个偏振的第一二阶模式和两个极化的第二二阶模式。 波导包括增益介质。 应力施加区域,波导和增益介质的布置使得能够对工作波长的至少一种模式提供优先引导。

    Apparatus for the industrial processing of a material by optical radiation
    8.
    发明授权
    Apparatus for the industrial processing of a material by optical radiation 有权
    用于通过光学辐射对材料进行工业加工的装置

    公开(公告)号:US07592568B2

    公开(公告)日:2009-09-22

    申请号:US11446865

    申请日:2006-06-05

    IPC分类号: B23K26/06 H01S3/30

    CPC分类号: B23K26/0734 H01S3/06729

    摘要: Apparatus for the industrial processing of a material by a fiber laser, which fiber laser emits optical radiation, the apparatus configured such that the optical radiation forms an optical power distribution on a surface of the material, including first and second optical powers which are located at respective first and second radii from a center of the optical power distribution and which are of substantially higher intensity than a third optical power which is located at a third radius from the center of the optical power distribution and which is smaller than the first and the second radii.

    摘要翻译: 用于通过光纤激光器对该材料进行工业处理的装置,该光纤激光器发射光辐射,所述装置被配置为使得该光辐射在该材料的表面上形成光功率分布,该功率分布包括第一和第二光功率, 相应的第一和第二半径来自光功率分布的中心并且具有比位于距离光功率分布的中心的第三半径小的第三光功率的强度比第一和第二半径小的第一和第二半径 半径

    Apparatus for combining laser radiation
    9.
    发明授权
    Apparatus for combining laser radiation 有权
    用于组合激光辐射的装置

    公开(公告)号:US08520306B2

    公开(公告)日:2013-08-27

    申请号:US12998438

    申请日:2009-10-23

    IPC分类号: G02B27/10 G02F1/01

    摘要: Apparatus for combining laser radiation (1) 5 which apparatus comprises a seed laser (2), a splitter (3), a plurality of amplifier chains (4), a reference amplifier chain (7), detection means (5). demodulator means (6), and phase control means (12), wherein each of the amplifier chains (4) comprises at least one optical amplifier (11), optical radiation (17) emitted from the seed laser (2) is split into the plurality of amplifier chains (4) by the splitter (3). amplified by the plurality of amplifier chains (4), interfered, detected by the detection means (5), demodulated by the demodulator means (6), and a signal (27) indicative of path length imbalance (14) fed back to the phase control means (12), and wherein the apparatus is characterized in that the output power emitted by each amplifier chain (4) is at least 50 W, the bandwidth (8) of the seed laser (2) is at least 1 GHz, and the path length difference (14) between each amplifier chain (4) and the reference amplifier chain (7) is less than the coherence length (10) of the seed laser (2).

    摘要翻译: 用于组合激光辐射(1)5的装置,该装置包括种子激光器(2),分束器(3),多个放大器链(4),参考放大器链(7),检测装置(5)。 解调器装置(6)和相位控制装置(12),其中每个放大器链(4)包括至少一个光放大器(11),从种子激光器(2)发射的光辐射(17)被分成 多个放大器链(4)由分离器(3)组成。 由所述多个放大器链(4)放大,由所述检测装置(5)检测到被所述解调器装置(6)解调的干扰,以及指示反馈到所述相位的路径长度不平衡(14)的信号(27) 控制装置(12),其特征在于,每个放大器链(4)发射的输出功率至少为50W,种子激光器(2)的带宽(8)至少为1GHz,以及 每个放大器链(4)和参考放大器链(7)之间的路径长度差(14)小于种子激光器(2)的相干长度(10)。

    APPARATUS FOR COMBINING LASER RADIATION
    10.
    发明申请
    APPARATUS FOR COMBINING LASER RADIATION 有权
    用于组合激光辐射的装置

    公开(公告)号:US20110194166A1

    公开(公告)日:2011-08-11

    申请号:US12998438

    申请日:2009-10-23

    IPC分类号: G02F1/01 H01S3/067 G02F2/00

    摘要: Apparatus for combining laser radiation (1) 5 which apparatus comprises a seed laser (2), a splitter (3), a plurality of amplifier chains (4), a reference amplifier chain (7), detection means (5). demodulator means (6), and phase control means (12), wherein each of the amplifier chains (4) comprises at least one optical amplifier (11), optical radiation (17) emitted from the seed laser (2) is split into the plurality of amplifier chains (4) by the splitter (3). amplified by the plurality of amplifier chains (4), interfered, detected by the detection means (5), demodulated by the demodulator means (6), and a signal (27) indicative of path length imbalance (14) fed back to the phase control means (12), and wherein the apparatus is characterised in that the output power emitted by each amplifier chain (4) is at least 50 W, the bandwidth (8) of the seed laser (2) is at least 1 GHz, and the path length difference (14) between each amplifier chain (4) and the reference amplifier chain (7) is less than the coherence length (10) of the seed laser (2).

    摘要翻译: 用于组合激光辐射(1)5的装置,该装置包括种子激光器(2),分束器(3),多个放大器链(4),参考放大器链(7),检测装置(5)。 解调器装置(6)和相位控制装置(12),其中每个放大器链(4)包括至少一个光放大器(11),从种子激光器(2)发射的光辐射(17)被分成 多个放大器链(4)由分离器(3)组成。 由所述多个放大器链(4)放大,由所述检测装置(5)检测到被所述解调器装置(6)解调的干扰,以及指示反馈到所述相位的路径长度不平衡(14)的信号(27) 控制装置(12),其特征在于,每个放大器链(4)发射的输出功率至少为50W,种子激光器(2)的带宽(8)至少为1GHz,以及 每个放大器链(4)和参考放大器链(7)之间的路径长度差(14)小于种子激光器(2)的相干长度(10)。