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HL: Fachverband Halbleiterphysik

HL 64: Poster II

HL 64.13: Poster

Donnerstag, 19. März 2020, 10:00–13:00, P1A

Passively mode-locked p-doped quantum dot lasers for stable optical pulse trains — •Dominik Auth¹, Vladimir V. Korenev^2,3, Artem V. Savelyev², Mikhail V. Maximov^2,3, Alexey E. Zhukov^2,3, and Stefan Breuer¹ — ¹Institute of Applied Physics, Technische Universität Darmstadt, 64289 Darmstadt, Germany — ²St. Petersburg Academic University RAS, ul. Khlopina 8/3, 194021 St. Petersburg, Russia — ³Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia

Monolithic mode-locked edge-emitting semiconductor quantum dot lasers emitting at 1.25 micrometer are ideal sources for the generation of short optical pulses for short-reach inter and intra data-center links. In this contribution, the emission dynamics of InAs/InGaAs quantum dot lasers with different gain-to-absorber section lengths and different p-doping concentrations in the GaAs barrier sections are investigated. The focus is on spectral, radio-frequency and time-domain analysis highlighting the influence of the absorber section length and the doping concentration on the pulse train stability and obtained mode-locking area in dependence on the gain injection current and absorber reverse bias voltage for these devices. This work is supported by the Russian Foundation for Basic Research (project #18-502-12081).