方形光纤在激光加工中的应用.pdf-Squarecorejacketedair-.PDF

Square core jacketed air-clad fiber † J.R. Hayes, Joanne C. Flanagan, Tanya M. Monro and D.J. Richardson Optoelectronics Research Centre University of Southampton, SO17 1BJ, UK. † Please note that Tanya M. Monro is now based at the School of Chemistry and Physics, University of Adelaide, Australia P. Grunewald and R. Allott Exitech Ltd. Oxford, OX5 1QU, UK Abstract: We report the fabrication of a highly multi-mode square core jacketed air-clad fiber with a top-hat near-field intensity profile. Using this fiber to deliver Q-switched pulses at 1 µm we have successfully produced square shaped ablation marks in indium tin oxide (ITO) without the use of complex beam shaping optics. © 2006 Optical Society of America OCIS codes: (060.2280) Fiber design and fabrication; (060.2400) Fiber properties References and Links 1. For example, see / 2. W.J. Wadsworth, R.M. Percival, G. Bouwmans, J.C. Knight, T.A. Birks, T.D. Hedley and P.St.J. Russell, “Very high numerical aperture Fibers,” IEEE. Photonics. Technol. Lett. 16 843 - 845 (2004). 3. Nader A. Issa, “High numerical aperture in multimode microstructured optical fibers,” Appl. Opt. 43 6191 - 6197 (2004) 1. Introduction The ideal beam delivery system for an industrial processing tool should supply laser light with the desired shape and intensity profile directly to the work piece, with minimal energy losses. For high power applications, safety considerations require the enclosure of the entire light path, a necessity that introduces design restraints and can also add undesira