Beam shaping of broad-area diode lasers: principles and benefits

  title={Beam shaping of broad-area diode lasers: principles and benefits},
  author={Albrecht v. Pfeil and Thilo von Freyhold},
  booktitle={SPIE OPTO},
High brightness is a major issue in most high-power diode laser applications. The brightness of a laser diode primarily depends on the optical power and the product of beam-quality factors in x- and y-direction, i.e. M2xx M2y. Even though there are many broad-area laser diodes which show an impressive brightness, all emitters lack a symmetric beam quality. In the direction perpendicular to the laser junction, the fast axis, the beam quality is perfect, showing an M2y-value of 1. Parallel to the… Expand
Beam shaping of a broad-area laser diode using 3D integrated optics.
This Letter presents a 3D integrated optics approach to shape the output of a broad-area laser diode with photonic chip-based approach that results in a 13× higher beam quality and 7× greater brightness. Expand
Optically pumped semiconductor disk lasers for high-power wide wavelength tuning
In this work I present and verify a strategy that makes it possible to change the wavelength, or color, of an external cavity semiconductor laser over a very large range. This is achieved by aExpand
980-nm broad-area diode laser coupled to a cylindrical lensed multimode fiber
A theoretical model is presented to calculate the fiber coupling efficiency and alignment tolerances for the case of a 980nm 100μm broad-area diode laser directly coupled to a 100μm round-shapedExpand
48.4: Beam Forming for a Laser Based Auto-stereoscopic Multi-Viewer Display
Abstract An auto-stereoscopic back projection display using a RGB multi-emitter laser illumination source and micro-optics to provide a wider view is described. The laser optical properties and theExpand


Micro-optical beam transformation system for high-power laser diode bars with efficient brightness conservation
Most of the potential applications of high power laser diode bars and stacks need special beam transformation systems in order to create a much more symmetric output beam. We present a novel conceptExpand
High-power double-clad fiber lasers
Rare-earth doped, laser-diode-pumped, single-mode, double-clad fiber lasers are studied in detail, experimentally and theoretically, with particular attention to properties of scaling to higherExpand
High-Power Broad-Area Diode Lasers and Laser Bars
This review presents the basic ideas and some examples of the chip technology of high-power diode lasers (λ = 650 nm − 1060 nm) in connection with the achievements of mounted single-stripe emittersExpand
The Physics and Technology of Laser Resonators
Fundamentals of resonator physics: Laser resonators and Gaussian beams by A.C. Walker Unstable resonators by P.E. Dyer Theory of waveguide laser resonators by C.A. Hill Ring laser resonators by T.A.Expand