Paper 13109-37
Pulse tunable SiGeSn/GeSn multi-quantum-well microdisk lasers
20 August 2024 • 11:10 AM - 11:25 AM PDT | Conv. Ctr. Room 6C
Abstract
This paper reports on SiGeSn/GeSn multi-quantum-well microdisk lasers. The fabrication of the devices includes a selective under-etching step, which enhances the guiding of the whispering gallery modes inside the cavity. Lasing occurs under different electrical pumping conditions with a very low threshold current and for long, quasi-continuous wave pulses compared to previously reported GeSn-based microdisk lasers. Furthermore, the lasing threshold current is reduced by a factor of ten compared to similar double-heterostructure devices.
Presenter
Univ. Stuttgart (Germany)
Lukas Seidel was born in Ulm, Germany in 1995. He received the Master of Science degree in photonic engineering from the University of Stuttgart, Germany, in 2020, where he is currently pursuing the Ph.D. degree in electrical engineering on the development and fabrication of SiGeSn-based lasers with the Institute of Semiconductor Engineering.