公开(公告)号：US20180217387A1

公开(公告)日：2018-08-02

申请号：US15939223

申请日：2018-03-28

Applicant: nLIGHT, Inc.

Inventor： Brian VICTOR ,  Jacob L. BELL ,  Dahv A.V. KLINER ,  Roger FARROW

IPC: G02B27/09 ,  B23K26/064 ,  B23K26/067 ,  B23K26/073 ,  G02B6/028 ,  G02B6/036 ,  G02B6/255 ,  G02B6/26

Abstract: An optical beam delivery system, includes: an optical beam source; a fiber assembly situated to receive and modify one or more beam characteristics of an optical beam; and a nonlinear frequency-conversion stage in optical communication with the fiber assembly and situated to receive and frequency-convert an optical beam from a first wavelength to one or more second wavelengths. The fiber assembly includes: a first length of fiber comprising a first RIP formed to enable modification of the one or more beam characteristics of the optical beam by a perturbation device, and a second length of fiber having a second RIP coupled to the first length of fiber, the second RIP formed to confine at least a portion of modified beam characteristics of the optical beam within one or more confinement regions. The first RIP and the second RIP are different.