9 December 2004 Micro-lens machining on optical fibers by direct laser ablation
Author Affiliations +
Abstract
Beam shaping at the output of optical fibers is required in a variety of applications including optical sensors, telecommunication devices and medical applications. We present a laser micro-machining technique for the fabrication of micro-lenses directly upon the end face of silica fibers using a F2-laser processing station. Ablation is performed in a mask projection arrangement with 25x demagnification. A mask with an occluded circular beam shape is imaged perpendicular to the fiber axis. The fiber is rotated axially while the laser cuts through the fiber, yielding a spherically shaped tip with radius defined by the mask dimensions. Strong 157 nm absorption by the silica glass facilitates precise structuring without micro-crack formation. The quality of the fiber-lenses is characterized by AFM, SEM and by analysing the beam profile at the fiber output.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas Fricke-Begemann, Thomas Fricke-Begemann, Jianzhao Li, Jianzhao Li, Jurgen Ihlemann, Jurgen Ihlemann, Peter Robert Herman, Peter Robert Herman, Gerd Marowsky, Gerd Marowsky, } "Micro-lens machining on optical fibers by direct laser ablation", Proc. SPIE 5578, Photonics North 2004: Photonic Applications in Astronomy, Biomedicine, Imaging, Materials Processing, and Education, (9 December 2004); doi: 10.1117/12.567671; https://doi.org/10.1117/12.567671
PROCEEDINGS
7 PAGES


SHARE
Back to Top