Optical fibers and optical systems comprising the same

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	Optical fibers and optical systems comprising the same
其他题名	Optical fibers and optical systems comprising the same
	LI, MING-JUN; LIU, ANPING
	2019-05-02
专利权人	CORNING INCORPORATED
公开日期	2019-05-02
授权国家	美国
专利类型	发明申请
摘要	An optical fiber for converting a Gaussian laser beam into a Bessel laser beam may include a first segment optically coupled to a second segment with a transition region, the first segment having a first outer diameter greater than a second outer diameter of the second segment. The first segment may include a first core portion with a first cladding portion extending around the first core portion. The second segment may include a second core portion with a second cladding portion extending around the second core portion. The optical fiber may have a non-axisymmetric refractive index profile or may be coupled to an end cap with a non-axisymmetric refractive index profile.
其他摘要	用于将高斯激光束转换成贝塞尔激光束的光纤可包括光学耦合到具有过渡区域的第二区段的第一区段，第一区段具有大于第二区段的第二外径的第一外径。第一段可包括第一芯部分，第一芯部分围绕第一芯部分延伸。第二区段可包括第二芯部分，第二包层部分围绕第二芯部分延伸。光纤可以具有非轴对称的折射率分布，或者可以耦合到具有非轴对称折射率分布的端盖。
主权项	A method for laser processing a transparent workpiece, the method comprising: forming a contour line in the transparent workpiece, the contour line comprising defects in the transparent workpiece, wherein forming the contour line comprises: directing a pulsed laser beam provided by a beam source through either: (a) an optical fiber comprising a at least one segment with non-axisymmetric refractive index profile that forms a non-axisymmetric pulsed laser beam, or(b) an optical fiber generating a ring-shaped beam and an end-cap with a with non-axisymmetric refractive index profile coupled to the optical fiber generating a ring-shaped beam, such that the end-cap forms a non-axisymmetric pulsed laser beam; wherein the portion of the non-axisymmetric pulsed laser beam directed into the transparent workpiece generates an induced absorption within the transparent workpiece, the induced absorption producing a defect within the transparent workpiece, and the portion of the pulsed laser beam directed into the transparent workpiece comprises: a wavelength λ; an effective spot size wo,eff; and a non-axisymmetric beam cross section that comprises a minimum Rayleigh range ZRx,min in a cross-sectional x-direction and a minimum Rayleigh range ZRy,min in a cross-sectional y-direction, wherein the smaller of ZRx,min and ZRy,min is greater than FDπw0,eff2λ, where FD is a dimensionless divergence factor comprising a value of 10 or greater.
申请日期	2018-10-24
专利号	US20190129093A1
专利状态	申请中
申请号	US16/169263
公开（公告）号	US20190129093A1
IPC 分类号	G02B6/02 \| G02B6/036 \| G02B6/26 \| G02B27/09 \| H01S5/022
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/57750
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	LI, MING-JUN,LIU, ANPING. Optical fibers and optical systems comprising the same. US20190129093A1[P]. 2019-05-02.