We proposed and demonstrated mode cleaning in a high-power fiber laser by integrating an
anti-resonant hollow-core fiber (AR-HCF) into a multimode laser cavity of an ytterbium (Yb) …

Disclosed herein are methods, apparatus, and systems for perturbing an optical beam
propagating within a first length of fiber to adjust one or more beam characteristics of the …

Disclosed herein are methods, apparatus, and systems for providing an optical beam
delivery device, comprising a first length of fiber comprising a first RIP formed to enable …

A method for forming an article includes: forming a melt pool; exposing the melt pool to an
optical beam having at least one beam characteristic; forming a keyhole cavity in the melt …

Fiber bending mechanisms vary beam characteristics by deflecting or bending one or more
fibers, by urging portions of one or more fibers toward a fiber shaping surface having a …

A method of making a three-dimensional object. The method comprises: a) positioning a
layer of particles over a build plate; b) exposing the layer of particles to a first laser beam …

An optical beam delivery device establishes, from an optical beam, an optical trap that is
moveable to different optical trap locations. The device has a first length of fiber through …

An apparatus includes beam shearing optics situated to receive a collimated beam and to
shear the collimated beam along a first direction so as to form a plurality of adjacent …

An all-fiber optical beam switch mechanism includes a first length of fiber through which an
incident optical beam having beam characteristics propagates along a first propagation path …

An optical beam delivery device formed of optical fibers that are configured to produce an
output exhibiting an intensity distribution profile having non-zero ellipticity includes a first …