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公开(公告)号：US10690854B2
公开(公告)日：2020-06-23
申请号：US16582487
申请日：2019-09-25
IPC分类号： G02B6/44 , G02B6/14 , C03B37/027 , C03B37/15 , G02B6/10 , G02B6/024 , G02B6/26 , G02B6/27 , G02B6/02 , G02B6/036
摘要： An optical fiber device may include a unitary core including a primary section and a secondary section, wherein at least a portion of the secondary section is offset from a center of the unitary core, wherein the unitary core twists about an optical axis of the optical fiber device along a length of the optical fiber device, and wherein a refractive index of the primary section is greater than a refractive index of the secondary section; and a cladding surrounding the unitary core.
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公开(公告)号：US11592612B2
公开(公告)日：2023-02-28
申请号：US17190207
申请日：2021-03-02
摘要： In some implementations, a waveguide may comprise an inner core to receive a first beam and an outer core surrounding the inner core to receive a second beam that is displaced from the first beam by an offset. The outer core may comprise a beam guiding region that rotationally expands over a length of the waveguide into an annulus that concentrically surrounds the inner core or a partial annulus that partially surrounds the inner core. For example, the beam guiding region may be defined by one or more low refractive index features that have a varied orientation and/or a varied shape over the length of the waveguide such that the second beam enters the waveguide as an offset beam and exits from the waveguide as a ring-shaped beam or a partial ring-shaped beam.
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公开(公告)号：US11336071B2
公开(公告)日：2022-05-17
申请号：US16161902
申请日：2018-10-16
摘要： A device may determine at least one metric related to a plurality of laser pulses associated with a Q-switched laser. The device may determine a statistical metric for the at least one metric related to the plurality of laser pulses. The device may determine that the statistical metric satisfies a threshold level of deviation of the at least one metric related to the plurality of laser pulses from a baseline value for the at least one metric. The device may indicate laser degradation of the Q-switched laser based on determining that the statistical metric satisfies the threshold.
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公开(公告)号：US11243364B2
公开(公告)日：2022-02-08
申请号：US16947465
申请日：2020-08-03
摘要： A graded index fiber having a refractive index profile that causes a beam to be re-imaged in the graded index fiber with a regular period may include a set of bends that have a bend period matched to or nearly matched to a pitch of the graded index fiber. For example, the set of bends may be formed in the graded index fiber using one or more bending devices that include one or more protrusions that have a periodicity matched to or nearly matched to a pitch of the graded index fiber. A first section of the one or more bending devices may be actuated to move towards a second section of the one or more bending devices such that the one or more protrusions cause the bends to be formed in the graded index fiber.
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公开(公告)号：US11340467B2
公开(公告)日：2022-05-24
申请号：US16860476
申请日：2020-04-28
摘要： An optical fiber may include a first core, a second core, and a cladding surrounding the first core and the second core. The second core may be at an off-center location with respect to a center of the optical fiber, or the second core may include an azimuthally nonuniform section at the off-center location. The second core may twist about an axis of the optical fiber along a length of the optical fiber, and the second core being twisted about the axis may cause an optical beam, launched into the second core at a first end of the optical fiber, to be at least partially converted to a rotary optical beam at a second end of the optical fiber.
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公开(公告)号：US10429584B2
公开(公告)日：2019-10-01
申请号：US15802897
申请日：2017-11-03
IPC分类号： G02B6/44 , G02B6/14 , G02B6/024 , G02B6/26 , G02B6/27 , C03B37/027 , C03B37/15 , G02B6/10 , G02B6/02 , G02B6/036
摘要： An optical fiber device may include a unitary core including a primary section and a secondary section, wherein at least a portion of the secondary section is offset from a center of the unitary core, wherein the unitary core twists about an optical axis of the optical fiber device along a length of the optical fiber device, and wherein a refractive index of the primary section is greater than a refractive index of the secondary section; and a cladding surrounding the unitary core.
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公开(公告)号：US20180143377A1
公开(公告)日：2018-05-24
申请号：US15802897
申请日：2017-11-03
CPC分类号： G02B6/14 , C03B37/02745 , C03B37/15 , C03B2203/20 , C03B2203/29 , G02B6/02042 , G02B6/02338 , G02B6/024 , G02B6/036 , G02B6/03605 , G02B6/03611 , G02B6/105 , G02B6/262 , G02B6/264 , G02B6/2726
摘要： An optical fiber device may include a unitary core including a primary section and a secondary section, wherein at least a portion of the secondary section is offset from a center of the unitary core, wherein the unitary core twists about an optical axis of the optical fiber device along a length of the optical fiber device, and wherein a refractive index of the primary section is greater than a refractive index of the secondary section; and a cladding surrounding the unitary core.
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公开(公告)号：US09377667B2
公开(公告)日：2016-06-28
申请号：US14719617
申请日：2015-05-22
CPC分类号： G02F1/353 , G02F1/3551 , G02F1/37 , G02F2001/354 , G02F2203/055 , H01S3/0092 , H01S3/109
摘要： Cascaded optical harmonic generators and methods for cascaded optical harmonic generation are disclosed. Relative disposition of individual harmonic generators of a cascaded harmonic generator in an optical path of the fundamental optical beam may be reversed. In a third harmonic generator, the fundamental optical beam may enter the third harmonic crystal first, and the second harmonic crystal second. When the fundamental optical beam enters the third harmonic crystal first, the fundamental light may remain non-depleted by second harmonic generation process.
摘要翻译： 公开了级联光谐波发生器和用于级联光谐波发生的方法。 级联谐波发生器的单个谐波发生器在基本光束的光路中的相对配置可以相反。 在三次谐波发生器中，基本光束可以先进入三次谐波晶体，二次谐波晶体进入第二谐波晶体。 当基本光束首先进入三次谐波晶体时，基波光可以通过二次谐波产生过程保持不耗尽。
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公开(公告)号：US11619788B2
公开(公告)日：2023-04-04
申请号：US17304999
申请日：2021-06-29
摘要： In some implementations, a fiber optic combiner may comprise an enclosing tube having a geometric shape and multiple optical fibers bundled within the enclosing tube. In some implementations, the multiple fibers comprise at least one optical fiber having a core and a non-circular cladding surrounding the core. The non-circular cladding may cause the multiple optical fibers to have a larger tube fill factor and a lower expected beam parameter product increase factor relative to the multiple optical fibers all having circular claddings.
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公开(公告)号：US11029467B2
公开(公告)日：2021-06-08
申请号：US16587834
申请日：2019-09-30
发明人： Martin H. Muendel , Richard D. Faulhaber , James Lefort , James J. Morehead , Vincent Petit , Simonette Pierrot , Kyle R. Schneider
摘要： A method may include performing an active alignment to enable optical coupling between a first optical fiber and a second optical fiber via an imaging structure. An end of the first optical fiber may be at a first location on a first surface of the imaging structure. The first location may be a first transverse offset distance from an axis of the imaging structure. An end of the second optical fiber may be at a second location of the first surface of the imaging structure. The second location may be a second transverse offset distance from the axis of the imaging structure. The method may include fusion splicing the end of the first optical fiber at the first location on the first surface of the imaging structure, and fusion splicing the end of the second optical fiber at the second location on the first surface of the imaging structure.
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