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公开(公告)号：WO2020237148A1
公开(公告)日：2020-11-26
申请号：PCT/US2020/034213
申请日：2020-05-22
摘要： An all solid hybrid waveguiding structure provides large mode area, acceptable losses of the desired core mode and very high losses of the undesired next higher order mode in the core. Embodiments of the waveguide include a hybrid of low index barriers providing confinement by total internal reflection, and further include high index rings that support guided modes only at effective indices different from that of the desired core mode.
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公开(公告)号：WO2021231415A1
公开(公告)日：2021-11-18
申请号：PCT/US2021/031763
申请日：2021-05-11
发明人： PAX, Paul H. , DAWSON, Jay W. , KHITROV, Victor V. , MART, Cody W. , MESSERLY, Michael J. , RUNKEL, Michael , YU, Charles X.
IPC分类号： G02B6/02
摘要： The present technology provides large mode area optical fibers engineered to have normal dispersion around 1600 nm, enabling high power Raman amplification at eye safer wavelengths. The fibers can have a main core and one or more side cores disposed relative to the main core so that modes of the main core and the one or more side cores hybridize into supermodes with modified dispersion.
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公开(公告)号：WO2020181003A1
公开(公告)日：2020-09-10
申请号：PCT/US2020/021021
申请日：2020-03-04
摘要： A dual-core waveguide architecture provides two evanescently coupled waveguides where a first waveguide is doped with an active gain species to produce optical power and a second waveguide that runs parallel to the first waveguide is configured to collect the power produced by the first waveguide. Power is harvested from the second waveguide.
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公开(公告)号：WO2017155626A4
公开(公告)日：2017-09-14
申请号：PCT/US2017/015577
申请日：2017-01-30
发明人： PAX, Paul H. , ALLEN, Graham S. , DAWSON, Jay W. , DRACHENBERG, Derrek Reginald , KHITROV, Victor V. , MESSERLY, Michael J. , SCHENKEL, Nick
摘要： Rare earth doped fiber lasers can be robust and efficient sources of high quality light, but are usually limited to the highest gain transitions of the active species. But rare earths typically possess a multitude of potentially useful transitions that might be accessed if the dominant transition can be suppressed. In fiber lasers this suppression is complicated by the very high net gain the dominant transitions exhibit; effective suppression requires some mechanism distributed along the length of the fiber. We have developed a novel waveguide with resonant leakage elements that frustrate guidance at well-defined and selectable wavelengths. Based on this waveguide, we have fabricated a Large Mode Area Neodymium doped fiber with suppression of the four-level transition around 1060 nm, and demonstrated lasing on the three-level transition at 930 nm with good efficiency.
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公开(公告)号：WO2017155626A2
公开(公告)日：2017-09-14
申请号：PCT/US2017/015577
申请日：2017-01-30
发明人： PAX, Paul H. , ALLEN, Graham S. , DAWSON, Jay W. , DRACHENBERG, Derrek Reginald , KHITROV, Victor V. , MESSERLY, Michael J. , SCHENKEL, Nick
摘要： Rare earth doped fiber lasers can be robust and efficient sources of high quality light, but are usually limited to the highest gain transitions of the active species. But rare earths typically possess a multitude of potentially useful transitions that might be accessed if the dominant transition can be suppressed. In fiber lasers this suppression is complicated by the very high net gain the dominant transitions exhibit; effective suppression requires some mechanism distributed along the length of the fiber. We have developed a novel waveguide with resonant leakage elements that frustrate guidance at well-defined and selectable wavelengths. Based on this waveguide, we have fabricated a Large Mode Area Neodymium doped fiber with suppression of the four-level transition around 1060 nm, and demonstrated lasing on the three-level transition at 930 nm with good efficiency.
摘要翻译： 稀土掺杂光纤激光器可以是高质量光的稳健且有效的光源，但通常限于活性物质的最高增益跃迁。 但是稀土通常拥有许多可能有用的转换，如果主导转换可以被抑制，那么可以访问这些转换。 在光纤激光器中，这种抑制由于主要转换所表现出的非常高的净增益而变得复杂; 有效的抑制需要沿纤维长度分布的一些机制。 我们开发了一种新型波导，它具有谐振泄漏元件，可以在定义好的和可选择的波长下阻止导波。 基于这种波导，我们制造了大面积掺钕光纤，抑制了1060nm左右的四能级跃迁，并且在930nm的三能级跃迁上展示了良好效率的激光。
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公开(公告)号：WO2019133544A1
公开(公告)日：2019-07-04
申请号：PCT/US2018/067365
申请日：2018-12-21
CPC分类号： H01S3/042 , H01S3/0405 , H01S3/06704 , H01S3/0672 , H01S3/06729 , H01S3/06741 , H01S3/06754 , H01S3/1603 , H01S3/1618
摘要： A uniform temperature profile is provided across the width of the core of a ribbon fiber laser or amplifier by the use of insulating elements at the core edges and a spatially variable gain in the fiber core. High average power ribbon fibers, enable a variety of applications such as practical laser cutting and beam combining.
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公开(公告)号：WO2018067383A1
公开(公告)日：2018-04-12
申请号：PCT/US2017/054181
申请日：2017-09-28
发明人： DAWSON, Jay W. , ALLEN, Graham S. , DRACHENBERG, Derrek Reginald , KHITROV, Victor V. , MESSERLY, Michael J. , PAX, Paul H. , SCHENKEL, Nick
摘要： An Nd 3+ optical fiber laser and amplifier operating in the wavelength range from 1300 to 1450 nm is described. The fiber includes a rare earth doped optical amplifier or laser operating within this wavelength band is based upon an optical fiber that guides light in this wavelength band. The waveguide structure attenuates light in the wavelength range from 850 nm to 950 nm and from 1050 nm to 1150 nm.
摘要翻译： 描述了在1300至1450nm的波长范围内工作的Nd + 3 +光纤激光器和放大器。 该光纤包括稀土掺杂光学放大器或在该波长带内工作的激光器是基于引导该波长带中的光的光纤。 波导结构衰减850nm至950nm和1050nm至1150nm波长范围内的光。
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公开(公告)号：WO2018118807A1
公开(公告)日：2018-06-28
申请号：PCT/US2017/067096
申请日：2017-12-18
发明人： KHITROV, Victor V. , PAX, Paul H. , DRACHENBERG, Derrek R. , ALLEN, Graham S. , CHEN, Diana C. , COOK, Matthew J. , CRIST, Robert Parker , DAWSON, Jay W. , KIANI, Leily , MESSERLY, Michael J. , SCHENKEL, Nick
摘要： An all fiber wavelength selective coupler provides wavelength selective transfer of optical energy between two or more separated waveguides. The coupler includes signal cores that are separated enough that they can be fusion spliced to standard fibers as lead-in and lead-out pigtails. A bridge between the signal cores facilitates transfer of the optical energy through a process of evanescent coupling. In one example, the bridge is formed of a series of graded index cores.
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公开(公告)号：WO2017155626A3
公开(公告)日：2017-09-14
申请号：PCT/US2017/015577
申请日：2017-01-30
发明人： PAX, Paul H. , ALLEN, Graham S. , DAWSON, Jay W. , DRACHENBERG, Derrek Reginald , KHITROV, Victor V. , MESSERLY, Michael J. , SCHENKEL, Nick
摘要： Rare earth doped fiber lasers can be robust and efficient sources of high quality light, but are usually limited to the highest gain transitions of the active species. But rare earths typically possess a multitude of potentially useful transitions that might be accessed if the dominant transition can be suppressed. In fiber lasers this suppression is complicated by the very high net gain the dominant transitions exhibit; effective suppression requires some mechanism distributed along the length of the fiber. We have developed a novel waveguide with resonant leakage elements that frustrate guidance at well-defined and selectable wavelengths. Based on this waveguide, we have fabricated a Large Mode Area Neodymium doped fiber with suppression of the four-level transition around 1060 nm, and demonstrated lasing on the three-level transition at 930 nm with good efficiency.
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