Berlin 2015 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 92: VCSELs, optical interconnects and Si photonics
HL 92.4: Vortrag
Donnerstag, 19. März 2015, 16:30–16:45, EW 202
Self-mode-locking vertical-external-cavity surface-emitting laser — Mahmoud Gaafar1, •Philipp Richter1, Hakan Keskin2, Christoph Möller1, Matthias Wichmann1, Wolfgang Stolz1,3, Arash Rahimi-Iman1, and Martin Koch1 — 1Department of Physics and Materials Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany — 2Department of Physics, Middle East Technical University, Ankara, 06800, Turkey — 3NAsP III/V GmbH, Am Knechtacker 19, 35041 Marburg, Germany
Self-mode-locked (SML) optically-pumped semiconductor disk lasers emerged in recent years to become a promising alternative to their saturable-absorber-based pendants. Self-mode-locking has yet not only been shown for quantum-well systems, but also for quantum-dot ones. In this work, we present an SML quantum-well semiconductor disk laser at an emission wavelength of 1 micron. Green light originating from second-harmonic generation using the out-coupled laser beam is demonstrated using a BBO crystal outside the cavity. In addition, a long-time-span pulse train as well as an autocorrelation trace is presented for our sub-ps pulses at 500 MHz repetition rate. A beam-profile measurement reveals the excellent beam quality of our device with an M-square factor of less than 1.1 for both axes.