Digitally Chirped Multilayer Quantum Dot Lasers with Dual-Wavelength Lasing Emissions
Source abstract
Abstract
The dual-wavelength lasing emissions of digitally chirped multilayer quantum dot (QD) lasers are investigated both experimentally and theoretically. The two lasing wavelengths are both identified as ground-state (GS) emissions but originated from different stacks of QD multilayers. The lasing spectra exhibited broadening and splitting properties by injecting more current. Moreover, the wavelength-resolved light-current characteristics reveal that first GS lasing intensity upon the threshold of second GS transitions neither saturates nor droops with increasing injection current, but increases with slightly reduced slope efficiency. A theoretical model is developed for digitally chirped multilayer QD lasers. The simulation results qualitatively reproduce the experimental observations.
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Research context
OpenAlex topics: Semiconductor Quantum Structures and Devices · Semiconductor Lasers and Optical Devices · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Electronics, National Chiao Tung University, Hsinchu City 30010, Taiwan
Funding
Ministry of Science and Technology, Taiwan
References (18)
Show source-provided references
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