公开(公告)号：US10315274B2

公开(公告)日：2019-06-11

申请号：US15040357

申请日：2016-02-10

Applicant: nLIGHT Inc.

Inventor： Xiaojun Li ,  R. Kirk Price ,  Jason N. Farmer ,  Ethan A. McGrath

IPC: B23K26/18 ,  B41J2/44 ,  B41M5/26 ,  B23K26/356 ,  B23K26/359 ,  B23K26/0622 ,  B23K26/082 ,  B41J2/47

Abstract: A laser marking method and system, and laser marked object are disclosed. The method includes directing a pulsed laser beam towards an object such that an interface between an oxidized layer and non-oxidized substrate is in a mark zone of the pulsed laser beam, and scanning the pulsed laser beam across the object in a predetermined pattern to create a mark having an L value of less than 40 and a surface roughness that is substantially unchanged compared to adjacent unmarked areas. The system includes a fiber laser generating amplified pulses that are directed towards a galvo-scanner and focusing optic, while the object includes an oxidized surface layer, an underlying non-oxidized substrate, and a mark having an L value of less than 40 with substantially unchanged roughness features.

公开(公告)号：US09535217B1

公开(公告)日：2017-01-03

申请号：US14702298

申请日：2015-05-01

Applicant: nLight, Inc.

Inventor： Jason N. Farmer ,  Ronii C. Mehl ,  Robert G. Waarts

IPC: G02B6/26 ,  G02B6/28 ,  H01S5/40 ,  G02B6/028 ,  G02B27/10 ,  G02B6/255 ,  G02B6/10 ,  G02B6/02

CPC classification number: G02B6/2821 ,  G02B6/02366 ,  G02B6/0283 ,  G02B6/0285 ,  G02B6/0288 ,  G02B6/03638 ,  G02B6/0365 ,  G02B6/03672 ,  G02B6/03683 ,  G02B6/10 ,  G02B6/2552 ,  G02B6/28 ,  G02B6/2804 ,  G02B6/2835 ,  G02B6/2856 ,  G02B6/287 ,  G02B6/4203 ,  G02B6/4296 ,  G02B27/106 ,  G02B27/1073 ,  H01S5/4012

Abstract: Multimode beam combiners include at least one gradient-step index optical fiber in which a refractive index difference at a core/cladding interface is selected to provide a numerical aperture so as to provide stable, uniform beam output. One or more such fibers is formed into a tapered bundle than can be shaped to provide a selected illuminated aperture. The fibers in the bundle can be separated by respective tapered claddings so as to be optically coupled or uncoupled. Illumination systems can include a plurality of such fibers coupled to a plurality of laser diodes or other light sources.

Abstract translation: 多模光束组合器包括至少一个梯度折射率光纤，其中选择芯/包层界面处的折射率差以提供数值孔径，以便提供稳定，均匀的光束输出。 一个或多个这样的纤维形成为可以被成形为提供所选择的照明孔径的锥形束。 束中的纤维可以通过相应的锥形包层分离，以便被光耦合或非耦合。 照明系统可以包括耦合到多个激光二极管或其它光源的多个这样的光纤。