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公开(公告)号：US08068705B2
公开(公告)日：2011-11-29
申请号：US12559284
申请日：2009-09-14
IPC分类号： G02B6/26
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber is configured with a double bottleneck-shaped multimode (MM) core capable of supporting substantially only a fundamental mode at a given wavelength and having opposite end regions, frustoconically shaped transformer regions, which run inwards from the respective end regions, and a central uniformly dimensioned region, which bridges the transformer regions. The MM core has a refractive step-index profile which is configured with a centrally positioned dip having a variable width along the length of the fiber. The width of the dip is relatively small at the end regions of the MM core so as to support only the fundamental mode with a Gaussian profile. As the dip becomes larger along the input transformer region, it gradually shapes the Gaussian profile into the ring profile of the fundamental mode, which is guided along the central region of the MM core. The dip gradually becomes smaller along the output transition region so as to shape the ring profile back into the substantially Gaussian profile of the fundamental mode radiated from the output end region of the MM core. The refractive index profile has a ring area doped with one or more rare-earth elements and configured to amplify substantially only the fundamental mode.
摘要翻译： 单芯光纤配置有双瓶颈型多模（MM）芯，其能够在给定波长处基本上仅支持基模，并且具有相对的端部区域，从相应端部区域向内延伸的截头圆锥形变压器区域，以及 中心均匀尺寸的区域，桥接变压器区域。 MM芯具有折射阶梯折射率分布，其配置有沿着光纤的长度具有可变宽度的中心定位的倾角。 在MM芯的端部区域，浸渍的宽度相对较小，以便仅支持具有高斯分布的基模。 随着沿着输入变压器区域的倾角变大，它逐渐将高斯分布形状变形成沿着MM芯的中心区域引导的基模的环形轮廓。 沿着输出过渡区逐渐变小，从而将环形轮廓形状形成为从MM核的输出端区域辐射的基本模式的基本高斯分布。 折射率分布具有掺杂有一个或多个稀土元素的环形区域并且被配置为仅基本上放大基本模式。
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公开(公告)号：US08781272B2
公开(公告)日：2014-07-15
申请号：US13593601
申请日：2012-08-24
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber has a double bottleneck-shaped core configured with opposite uniformly configured end regions, frustoconical transformer regions which run inwards from the respective end regions, and a central uniformly-dimensioned region which bridges the transformer regions. The core is configured as a multimode core or single-mode core and capable of guiding a single transverse mode between the end regions without splice losses.
摘要翻译： 单片光纤具有双重瓶颈型芯，其配置有相对均匀配置的端部区域，从各个端部区域向内延伸的截头圆锥形变压器区域和桥接变压器区域的中心均匀尺寸的区域。 核心被配置为多模核心或单模核心，并且能够在端部区域之间引导单个横向模式而没有熔接损耗。
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公开(公告)号：US20130034326A1
公开(公告)日：2013-02-07
申请号：US13593601
申请日：2012-08-24
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber has a double bottleneck-shaped core configured with opposite uniformly configured end regions, frustoconical transformer regions which run inwards from the respective end regions, and a central uniformly-dimensioned region which bridges the transformer regions. The core is configured as a multimode core or single-mode core and capable of guiding a single transverse mode between the end regions without splice losses.
摘要翻译： 单片光纤具有双重瓶颈型芯，其配置有相对均匀配置的端部区域，从各个端部区域向内延伸的截头圆锥形变压器区域和桥接变压器区域的中心均匀尺寸的区域。 核心被配置为多模核心或单模核心，并且能够在端部区域之间引导单个横向模式而没有熔接损耗。
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公开(公告)号：US20110064095A1
公开(公告)日：2011-03-17
申请号：US12559284
申请日：2009-09-14
IPC分类号： H01S3/30
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber is configured with a double bottleneck-shaped multimode (MM) core capable of supporting substantially only a fundamental mode at a given wavelength and having opposite end regions, frustoconically shaped transformer regions, which run inwards from the respective end regions, and a central uniformly dimensioned region, which bridges the transformer regions. The MM core has a refractive step-index profile which is configured with a centrally positioned dip having a variable width along the length of the fiber. The width of the dip is relatively small at the end regions of the MM core so as to support only the fundamental mode with a Gaussian profile. As the dip becomes larger along the input transformer region, it gradually shapes the Gaussian profile into the ring profile of the fundamental mode, which is guided along the central region of the MM core. The dip gradually becomes smaller along the output transition region so as to shape the ring profile back into the substantially Gaussian profile of the fundamental mode radiated from the output end region of the MM core. The refractive index profile has a ring area doped with one or more rare-earth elements and configured to amplify substantially only the fundamental mode.
摘要翻译： 单芯光纤配置有双瓶颈型多模（MM）芯，其能够在给定波长处基本上仅支持基模，并且具有相对的端部区域，从相应端部区域向内延伸的截头圆锥形变压器区域，以及 中心均匀尺寸的区域，桥接变压器区域。 MM芯具有折射阶梯折射率分布，其配置有沿着光纤的长度具有可变宽度的中心定位的倾角。 在MM芯的端部区域，浸渍的宽度相对较小，以便仅支持具有高斯分布的基模。 随着沿着输入变压器区域的倾角变大，它逐渐将高斯分布形状变形成沿着MM芯的中心区域引导的基模的环形轮廓。 沿着输出过渡区逐渐变小，从而将环形轮廓形状形成为从MM核的输出端区域辐射的基本模式的基本高斯分布。 折射率分布具有掺杂有一个或多个稀土元素的环形区域并且被配置为仅基本上放大基本模式。
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公开(公告)号：US08655121B2
公开(公告)日：2014-02-18
申请号：US13277339
申请日：2011-10-20
IPC分类号： G02B6/26
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A high power single mode fiber laser system has a monolithic active fiber configured with a double bottleneck-shaped multimode (MM) core which is capable of supporting substantially only a fundamental mode at a given wavelength. The core has opposite uniformly configured end regions, frustoconical transformer regions running inwards from the respective end regions, and a central uniformly-dimensioned region which bridges the transformer regions. The MM core is configured with a refractive step-index profile which includes a continuous dip configured to shape an intensity field of the fundamental mode from a Gaussian or dome-shaped field profile to a two-peak-shaped profile and back to the Gaussian filed profile.
摘要翻译： 高功率单模光纤激光器系统具有一个单芯有源光纤，其配置有双瓶颈多模（MM）芯，其能够在给定波长下基本上仅支持基模。 芯具有相对均匀配置的端部区域，从相应端部区域向内延伸的截头圆锥形变压器区域和桥接变压器区域的中心均匀尺寸的区域。 MM芯配置有折射阶跃折射率分布，其包括连续凹陷，其被配置成将基模的强度场从高斯或圆顶形场分布成形为双峰形轮廓并返回到高斯场 个人资料
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公开(公告)号：US08081667B2
公开(公告)日：2011-12-20
申请号：US12630545
申请日：2009-12-03
CPC分类号： H01S3/06745 , H01S3/0672 , H01S3/06729 , H01S3/06754 , H01S3/08045 , H01S3/094019 , H01S3/094053 , H01S3/1608 , H01S3/1618
摘要： A high power single mode fiber laser system is configured with an active fiber including coextending multimode core (MM) and cladding around the MM core. The MM core is doped with one or more ions selected from rare earth and transitional metals and has a bottleneck cross in accordance with one aspect of the disclosure. The bottleneck cross-section includes a relatively small uniformly dimensioned input end region, a frustoconical region and a relatively large uniformly dimensioned amplifying region. The refractive step index of the MM core is configured with a central dip shaped and dimensioned along the input region so as not to disturb a Gaussian field profile of fundamental mode, gradually transform the Gaussian field profile into the ring profile of the fundamental mode and support the latter along the amplifying region. In accordance with a further aspect, the core is further provided with an output transforming region with the dip which gradually shapes the ring field profile in the Gaussian field profile further distortlessly supported by the output end region. A variety of end and side pumping arrangements are employed with the structures configured in accordance with the first and second aspects.
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公开(公告)号：US20110064097A1
公开(公告)日：2011-03-17
申请号：US12630545
申请日：2009-12-03
IPC分类号： H01S3/067
CPC分类号： H01S3/06745 , H01S3/0672 , H01S3/06729 , H01S3/06754 , H01S3/08045 , H01S3/094019 , H01S3/094053 , H01S3/1608 , H01S3/1618
摘要： A high power single mode fiber laser system is configured with an active fiber including coextending multimode core (MM) and cladding around the MM core. The MM core is doped with one or more ions selected from rare earth and transitional metals and has a bottleneck cross in accordance with one aspect of the disclosure. The bottleneck cross-section includes a relatively small uniformly dimensioned input end region, a frustoconical region and a relatively large uniformly dimensioned amplifying region. The refractive step index of the MM core is configured with a central dip shaped and dimensioned along the input region so as not to disturb a Gaussian field profile of fundamental mode, gradually transform the Gaussian field profile into the ring profile of the fundamental mode and support the latter along the amplifying region. In accordance with a further aspect, the core is further provided with an output transforming region with the dip which gradually shapes the ring field profile in the Gaussian field profile further distortlessly supported by the output end region. A variety of end and side pumping arrangements are employed with the structures configured in accordance with the first and second aspects.
摘要翻译： 高功率单模光纤激光器系统配置有主动光纤，包括共延伸多模核（MM）和围绕MM核的包层。 掺杂有选自稀土和过渡金属的一种或多种离子的MM核，并且根据本公开的一个方面具有瓶颈交叉。 瓶颈横截面包括相对小的均匀尺寸的输入端区域，截头圆锥形区域和相对较大的均匀尺寸的放大区域。 MM芯的折射阶跃指数被配置成沿着输入区域的中心浸渍形状和尺寸，以便不干扰基本模式的高斯场分布，将高斯场分布逐渐变换成基模的环形轮廓并且支撑 后者沿着放大区域。 根据另一方面，芯还设置有具有浸渍的输出变换区域，其逐渐地形成由输出端区域进一步失真地支持的高斯场分布中的环场分布。 采用根据第一和第二方面构造的结构的各种端部和侧面泵送装置。
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公开(公告)号：US20120269209A1
公开(公告)日：2012-10-25
申请号：US13277339
申请日：2011-10-20
IPC分类号： H01S3/067
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A high power single mode fiber laser system has a monolithic active fiber configured with a double bottleneck-shaped multimode (MM) core which is capable of supporting substantially only a fundamental mode at a given wavelength. The core has opposite uniformly configured end regions, frustoconical transformer regions running inwards from the respective end regions, and a central uniformly-dimensioned region which bridges the transformer regions. The MM core is configured with a refractive step-index profile which includes a continuous dip configured to shape an intensity field of the fundamental mode from a Gaussian or dome-shaped field profile to a two-peak-shaped profile and back to the Gaussian filed profile.
摘要翻译： 高功率单模光纤激光器系统具有单体有源光纤，其配置有双瓶颈多模（MM）芯，其能够在给定波长下基本上仅支持基模。 芯具有相对均匀配置的端部区域，从相应端部区域向内延伸的截头圆锥形变压器区域和桥接变压器区域的中心均匀尺寸的区域。 MM芯配置有折射阶跃折射率分布，其包括连续凹陷，其被配置成将基模的强度场从高斯或圆顶形场分布成形为双峰形轮廓并返回到高斯场 个人资料
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公开(公告)号：US07593435B2
公开(公告)日：2009-09-22
申请号：US11973437
申请日：2007-10-09
IPC分类号： H01S3/30
CPC分类号： H01S3/094003 , H01S3/0675 , H01S3/07 , H01S3/094007 , H01S3/094011 , H01S3/094046 , H01S3/1608 , H01S3/1618
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20110097049A1
公开(公告)日：2011-04-28
申请号：US12607500
申请日：2009-10-28
IPC分类号： G02B6/036
CPC分类号： G02B6/02023 , G02B6/03633 , G02B6/03638 , H01S3/06729 , H01S3/08045 , H01S3/094007
摘要： Optical apparatus, comprising an optical fiber having a wavelength of operation, the optical fiber comprising an inner core, the inner core supporting a fundamental mode and at least first and second higher order modes (HOMs) at the wavelength of operation; a first ring-shaped core region spaced from and disposed about the inner core; a second ring-shaped core region spaced from and disposed about the ring-shaped core region; and wherein the optical fiber is configured and arranged such that the first HOM optically interacts with the first ring-shaped core region and the second HOM optically interacts with the second ring-shaped core region.
摘要翻译： 光学装置，包括具有工作波长的光纤，所述光纤包括内芯，所述内芯支撑基模，以及至少第一和第二高阶模（HOM）在工作波长处; 与所述内芯隔开设置的第一环形芯区域; 与所述环状芯部区域隔开并配置的第二环状芯部区域; 并且其中所述光纤被配置和布置成使得所述第一HOM与所述第一环形芯区域光学相互作用并且所述第二HOM与所述第二环形芯区域光学相互作用。
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