IPG Photonics

About: IPG Photonics is a based out in . It is known for research contribution in the topics: Laser & Fiber laser. The organization has 903 authors who have published 1241 publications receiving 63339 citations.

Imaging Anisotropic Layering with Bayesian Inversion of Multiple Data Types

Abstract: T. Bodin, J. Leiva, B. Romanowicz ,V. Maupin, and H. Yuan 6 1 Berkeley Seismological Laboratory, 215 McCone Hall, UC Berkeley, Berkeley CA 94720-4760 2 Univ Lyon, Universite Lyon 1, Ens de Lyon, CNRS, UMR 5276 LGL-TPE, F-69622, Villeurbanne, France 3 Insitut de Physique du Globe de Paris (IPGP), 1 Rue Jussieu 75005 Paris, France 4 College de France, 11 place Marcelin Berthelot, 75231 Paris, France 5 Department of Geosciences, University of Oslo, Post Office Box 1047, Blindern, Oslo 0316, Norway 6 Department of Earth and Planetary Sciences, Macquarie University, New South Wales 2109, Australia

Publisher Correction: Massively parallel sensing of trace molecules and their isotopologues with broadband subharmonic mid-infrared frequency combs

Abstract: In the version of this Article originally published, in equation (9), the ‘Δ’ in the first ‘Δfrep’ shouldn’t have been included and, in equation (10), within the brackets, frep and f were the wrong way round. These equations have now been corrected in the online versions.

Optical fiber apparatus with suppression of higher order modes

Abstract: Optical fiber apparatus having a wavelength of operation, that comprises an optical fiber including a core comprising an active material for providing light having the operating wavelength responsive to the optical apparatus receiving pump optical energy having a pump wavelength; a cladding disposed about the core; at least one region spaced from the core; and wherein the optical fiber is configured and arranged such that at the wavelength of operation the optical fiber can propagate a plurality of modes and wherein the optical fiber comprises a fundamental mode that is primarily a mode of the core and at least one higher order mode (HOM) that is a mixed mode of a selected mode of the core and of a selected mode of the at least one region.

Multiport optical amplifier with narrowcast power equalization

Abstract: Apparatus and method for equalizing a multiplicity of amplifier optical output signals comprised of a combined broadcast optical signal and a narrowcast optical signal having different bands of wavelengths of light by adjusting the power output level of at least one the signals in response to an amplified sample of the signal. A light switch (114) or attenuator (110, 112) and a sensor (116) for determining whether a transmission fiber (120) is in place is connected to each of the multiplicity of optical output signals to allow the optical output signals to be turned on and off for maintenance and repair.

Laser welding head with dual movable mirrors providing beam movement and laser welding systems and methods using same

Abstract: A laser welding head with movable mirrors may be used to perform welding operations, for example, with wobble patterns and/or seam finding/tracking and following. The movable mirrors provide a wobbling movement of one or more beams within a relatively small field of view, for example, defined by a scan angle of 1-2°. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The laser welding head may also include a diffractive optical element to shape the beam or beams being moved. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the welding head such as a thermal condition proximate one of the mirrors.