Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
K: Fachverband Kurzzeit- und angewandte Laserphysik
K 7: Laser Beam Interaction and Laser Diagnostics
K 7.3: Vortrag
Mittwoch, 11. März 2020, 14:30–14:45, f428
Highly Efficient Rhodamine B Doped Polymer Fiber Lasers — •Stefanie Unland1, Simon Spelthann1,2, Jonas Thiem1,2, Florian Jakobs3, Jana Kielhorn3, Pen Yiao Ang3, Hans-Hermann Johannes3,4,5, Dietmar Kracht1,5, Jörg Neumann1,5, Axel Ruehl1,2,4, Wolfgang Kowalsky3,4,5, and Detlev Ristau1,2,4,5 — 1Laser Zentrum Hannover e.V., Hannover, Germany — 2Leibniz University Hannover, Institute of Quantum Optics, Hannover, Germany — 3TU Braunschweig, Institut für Hochfrequenztechnik, Braunschweig, Germany — 4Academic Alliance Braunschweig - Hannover QUANOMET, Germany — 5Cluster of Excellence PhoenixD, Hannover, Germany
Rhodamine B (RB) doped polymer optical fiber amplifiers and lasers were already broadly investigated since the 1990s. New applications in the field of integrated photonics open new opportunities for the use of such fibers, e.g. lab-on-a-chip applications. As degradation of the dye or the polymer is expected during the manufacturing process, high efficiencies are desired to ensure lasing. To provide high energies, the performance of single-wavelength RB:POF lasers has to be optimized. We will present results on the optimization of a Rhodamine B doped poly(methyl-methacrylat) (PMMA) fiber laser which were achieved by varying the doping concentration and the output coupler reflectivity. High pulse energy of 1.65 mJ, a slope efficiency of 57%, and a half-life of 905000 pulses were achieved by pumping a 10 ppm doped fiber at a wavelength of 550 nm. Furthermore, simulations on the wavelength tunability of a laser based on such polymer fiber will be presented.