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    FIBER LASER SYSTEM
    63.
    发明申请
    FIBER LASER SYSTEM 有权
    光纤激光系统

    公开(公告)号：US20100002730A1

    公开(公告)日：2010-01-07

    申请号：US12411732

    申请日：2009-03-26

    Applicant: Valentin P. Gapontsev ,  Valentin Fomin ,  Nicholai Platonov

    Inventor： Valentin P. Gapontsev ,  Valentin Fomin ,  Nicholai Platonov

    IPC: H01S3/30 ,  H01S3/09

    CPC classification number: H01S3/094003 ,  H01S3/0675 ,  H01S3/07 ,  H01S3/094007 ,  H01S3/094011 ,  H01S3/094046 ,  H01S3/1608 ,  H01S3/1618

    Abstract: A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.

    Abstract translation: 强大的光纤激光系统配置有至少一个大面积多包层稀土掺杂光纤，其被配置有能够传播第一波长的单模激光发射的MM核，以及至少一个泵组件 能够产生比稀土掺杂光纤的第一波长短的波长的光泵输出。 泵送组件具有耦合到SM-MM组合器的多个SM光纤激光器，其可操作以将泵输出午餐到稀土掺杂光纤的包层中，使得强大的光纤激光器系统可操作地传递高达 20 kW。

    Multi-wavelength laser source
    64.
    发明授权
    Multi-wavelength laser source 失效
    多波长激光源

    公开(公告)号：US07627006B2

    公开(公告)日：2009-12-01

    申请号：US10665138

    申请日：2003-09-18

    Applicant: Serge Doucet ,  Sophie Larochelle ,  Radan Slavik ,  Isabelle Castonguay

    Inventor： Serge Doucet ,  Sophie Larochelle ,  Radan Slavik ,  Isabelle Castonguay

    IPC: H01S3/30 ,  H01S3/10

    CPC classification number: H01S3/0675 ,  H01S3/08086 ,  H01S3/094046 ,  H01S3/0941

    Abstract: A multi-wavelength laser source is provided including a pump laser unit, a gain section and an output. The pump laser unit generates an energy signal, which is applied to the gain section. The gain section includes a gain medium with having a superstructure grating forming a distributed Fabry-Perot-like structure. The superstructure grating causes a multi-wavelength laser signal to be generated when the energy signal is applied to the gain medium. The multi-wavelength laser signal is then released at the output.

    Abstract translation: 提供了包括泵激光单元，增益部分和输出的多波长激光源。 泵激光单元产生施加到增益部分的能量信号。 增益部分包括具有形成分布式法布里 - 珀罗状结构的上部结构光栅的增益介质。 当能量信号被施加到增益介质时，上部结构光栅导致产生多波长激光信号。 然后在输出端释放多波长激光信号。

    Powerful fiber laser system
    65.
    发明授权
    Powerful fiber laser system 有权
    强大的光纤激光系统

    公开(公告)号：US07593435B2

    公开(公告)日：2009-09-22

    申请号：US11973437

    申请日：2007-10-09

    Applicant: Valentin P. Gapontsev ,  Valentin Fomin ,  Nikolai Platonov

    Inventor： Valentin P. Gapontsev ,  Valentin Fomin ,  Nikolai Platonov

    IPC: H01S3/30

    CPC classification number: H01S3/094003 ,  H01S3/0675 ,  H01S3/07 ,  H01S3/094007 ,  H01S3/094011 ,  H01S3/094046 ,  H01S3/1608 ,  H01S3/1618

    Abstract: A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.

    Abstract translation: 强大的光纤激光系统配置有至少一个大面积多包层稀土掺杂光纤，其被配置有能够传播第一波长的单模激光发射的MM核，以及至少一个泵组件 能够产生比稀土掺杂光纤的第一波长短的波长的光泵输出。 泵送组件具有耦合到SM-MM组合器的多个SM光纤激光器，其可操作以将泵输出午餐到稀土掺杂光纤的包层中，使得强大的光纤激光器系统可操作地传递高达 20 kW。

    Raman Amplifier Structure
    66.
    发明申请
    Raman Amplifier Structure 审中-公开
    拉曼放大器结构

    公开(公告)号：US20080297883A1

    公开(公告)日：2008-12-04

    申请号：US11996354

    申请日：2006-07-11

    Applicant: Stefano Faralli ,  Gabriele Bolognini ,  Giovanni Sacchi ,  Fabrizio Di Pasquale

    Inventor： Stefano Faralli ,  Gabriele Bolognini ,  Giovanni Sacchi ,  Fabrizio Di Pasquale

    IPC: H01S3/30

    CPC classification number: H04B10/2916 ,  H01S3/06754 ,  H01S3/094046 ,  H01S3/094073 ,  H01S3/094096 ,  H01S3/302 ,  H01S5/12 ,  H01S5/146

    Abstract: A Raman amplifier structure (121, 221) for optically amplifying an input optical signal comprises an optical means (22) through which the optical signal is propagated, a first pump optical source (10) for generating a first pump radiation and at least one second pump optical source (24, 27) for generating a second pump radiation. The first and second pump optical radiations are combined and propagated in optical transmission means (22) for supplying an optical amplification of the signal through the Raman effect. The first pump optical source (10) comprises a first laser source (12) for generating a radiation with relatively low noise and relatively low power and a Raman amplifier (13) for amplifying the radiation coming from the first laser source for generating the first pump radiation. The Raman amplifier (13) comprises a second laser source (14) for generating an optical radiation having relatively higher power and noise than the first laser source and the radiation coming from the second laser source is used for counter-pumping the radiation coming from the first laser source (12) for generating the first pump radiation. This limits the amount of noise transferred from the second source (14) to the first pump radiation.

    Abstract translation: 用于光学放大输入光信号的拉曼放大器结构（121,221）包括光学信号传播的光学装置（22），用于产生第一泵浦辐射的第一泵浦光源（10）和至少一个第二 泵浦光源（24,27），用于产生第二泵浦辐射。 第一和第二泵浦光辐射在光传输装置（22）中组合和传播，用于通过拉曼效应提供信号的光放大。 第一泵浦光源（10）包括用于产生具有相对较低噪声和相对较低功率的辐射的第一激光源（12）和用于放大来自第一激光源的辐射的拉曼放大器（13），用于产生第一泵 辐射。 拉曼放大器（13）包括用于产生具有比第一激光源相对更高的功率和噪声的光辐射的第二激光源（14），并且来自第二激光源的辐射用于反向泵浦来自 用于产生第一泵浦辐射的第一激光源（12）。 这限制了从第二源（14）传递到第一泵辐射的噪声量。

    Fast Dynamic Gain Control in a Bidirectionally-Pumped Raman Fiber Amplifier
    67.
    发明申请
    Fast Dynamic Gain Control in a Bidirectionally-Pumped Raman Fiber Amplifier 有权
    双向泵浦拉曼光纤放大器中的快速动态增益控制

    公开(公告)号：US20080247034A1

    公开(公告)日：2008-10-09

    申请号：US12137250

    申请日：2008-06-11

    Applicant: Xiang Zhou ,  Martin Birk

    Inventor： Xiang Zhou ,  Martin Birk

    IPC: H01S3/30

    CPC classification number: H01S3/302 ,  H01S3/06754 ,  H01S3/094011 ,  H01S3/094046 ,  H01S3/094096 ,  H01S3/10015 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/2942 ,  H04B10/296

    Abstract: The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.

    Abstract translation: 本发明提供了用于控制具有正向光泵和反向光泵的双向泵浦拉曼光纤放大器的增益的方法和装置。 通过调整正向光泵来控制总体增益，而反向光泵的功率电平基本上是固定的。 增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与至少一个正向光泵的泵浦功率调整相关联的预定功能。 输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。 每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。

    Stretched-pulse Raman fiber lasers and methods of operating the same
    69.
    发明授权
    Stretched-pulse Raman fiber lasers and methods of operating the same 有权
    拉伸脉冲拉曼光纤激光器及其操作方法

    公开(公告)号：US07236504B2

    公开(公告)日：2007-06-26

    申请号：US11030860

    申请日：2005-01-07

    Applicant: Shamino Y. Wang

    Inventor： Shamino Y. Wang

    IPC: H01S3/30

    CPC classification number: H01S3/302 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06791 ,  H01S3/08022 ,  H01S3/094046 ,  H01S5/0064 ,  H01S2301/08

    Abstract: A method of operating a stretched-pulse Raman fiber laser includes producing laser radiation gain in a laser cavity using predominantly Raman amplification. Such a stretched-pulse Raman fiber laser has a laser cavity that includes a Negative Group Velocity Dispersion Fiber connected in series with a Positive Group Velocity Dispersion Fiber, a polarization controller and an isolator. In some examples, the Negative Group Velocity Dispersion Fiber is a Dispersion Compensating Fiber. In other examples, the Negative Group Velocity Dispersion Fiber is replaced by a Raman Specialty Fiber.

    Abstract translation: 拉伸脉冲拉曼光纤激光器的操作方法包括使用主要为拉曼放大的激光腔产生激光辐射增益。 这种拉伸脉冲拉曼光纤激光器具有激光腔，其包括与正组速度色散光纤，偏振控制器和隔离器串联连接的负组速度色散光纤。 在一些示例中，负组速度色散光纤是色散补偿光纤。 在其他示例中，负组合速度色散纤维被拉曼特种纤维替代。

    Mid-IR microchip laser: ZnS:Cr2+ laser with saturable absorber material
    70.
    发明授权
    Mid-IR microchip laser: ZnS:Cr2+ laser with saturable absorber material 有权
    中红外微芯片激光器：具有可饱和吸收材料的ZnS：Cr2 +激光器

    公开(公告)号：US06960486B2

    公开(公告)日：2005-11-01

    申请号：US10247272

    申请日：2002-09-19

    Applicant: Sergey B. Mirov ,  Vladimir V. Fedorov

    Inventor： Sergey B. Mirov ,  Vladimir V. Fedorov

    IPC: H01S3/16 ,  C30B31/00 ,  C30B31/02 ,  H01S3/06 ,  H01S3/08 ,  H01S3/081 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/1055 ,  H01S3/113 ,  H01L21/00 ,  H01L21/06 ,  H01L21/10

    CPC classification number: H01S3/0805 ,  C30B29/48 ,  C30B31/00 ,  C30B31/02 ,  H01S3/0014 ,  H01S3/0604 ,  H01S3/0627 ,  H01S3/08009 ,  H01S3/08086 ,  H01S3/094038 ,  H01S3/094042 ,  H01S3/094046 ,  H01S3/09415 ,  H01S3/1055 ,  H01S3/108 ,  H01S3/113 ,  H01S3/115 ,  H01S3/117 ,  H01S3/162 ,  H01S3/1623 ,  H01S3/1628 ,  H01S2301/04 ,  Y10S438/917

    Abstract: A method of fabrication of laser gain material and utilization of such media includes the steps of introducing a transitional metal, preferably Cr2+ thin film of controllable thickness on the ZnS crystal facets after crystal growth by means of pulse laser deposition or plasma sputtering, thermal annealing of the crystals for effective thermal diffusion of the dopant into the crystal volume with a temperature and exposition time providing the highest concentration of the dopant in the volume without degrading laser performance due to scattering and concentration quenching, and formation of a microchip laser either by means of direct deposition of mirrors on flat and parallel polished facets of a thin Cr:ZnS wafer or by relying on the internal reflectance of such facets. The gain material is susceptible to utilization of direct diode or fiber laser pumping of a microchip laser with a level of power density providing formation of positive lens and corresponding cavity stabilization as well as threshold population inversion in the laser material. Multiple applications of the laser material are contemplated in the invention.

    Abstract translation: 激光增益材料的制造方法和这种介质的利用方法包括以下步骤：通过脉冲在晶体生长之后，在ZnS晶体面上引入可控厚度的过渡金属，优选Cr 2+ + 激光沉积或等离子体溅射，晶体的热退火使掺杂剂有效地热扩散到具有温度和曝光时间的晶体体积中，提供体积中掺杂剂的最高浓度，而不降低由于散射和浓缩猝灭引起的激光性能，以及 通过在薄的Cr：ZnS晶片的平坦和平行的抛光小面上直接沉积反射镜，或通过依赖于这些面的内部反射率来形成微芯片激光器。 增益材料易于利用具有功率密度水平的微芯片激光器的直接二极管或光纤激光泵浦，其提供形成正透镜并且相应的腔稳定以及激光材料中的阈值群体反转。 在本发明中考虑了激光材料的多种应用。

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