Sonja Ungerمشاهده پروفایل
پژوهشگر
Sonja Unger is a Scientist at the Leibniz Institute of Photonic Technology (IPHT) in Jena, Germany, working within the Technology Group Competence Center for Specialty Optical Fibers. Her research focuses on the material science and engineering aspects of specialty optical fibers for laser and sensing applications. Dr. Unger's research interests center on the fundamental properties of doped silica glasses for optical fiber applications. She investigates photodarkening phenomena in rare-earth doped fibers, particularly examining how co-dopants like cerium and aluminum can mitigate degradation effects in ytterbium and thulium fiber lasers. Her work also explores the viscous flow behavior of various doped silica glasses during fiber manufacturing processes, including collapsing techniques used in MCVD (Modified Chemical Vapor Deposition). Analysis of her publication record reveals consistent focus on specialty optical fiber development, with particular emphasis on thulium and ytterbium doped systems. Her research spans from fundamental material characterization to practical high-power laser applications, with significant contributions to understanding photodarkening mechanisms and developing mitigation strategies. Recent work has expanded into crystal-derived fiber approaches, combining crystalline and amorphous materials to create novel fiber structures with enhanced performance characteristics. Dr. Unger actively collaborates with researchers across the IPHT institute and with external partners, as evidenced by her co-authorship on numerous publications with colleagues from various research groups. Her work contributes significantly to advancing high-power fiber laser technology and specialty optical fiber development.
