標題: Digitally Chirped Multilayer Quantum Dot Lasers with Dual-Wavelength Lasing Emissions
作者: Sun, Yi-Jan Leo
Hsieh, Pin-Hsien
Lin, Gray
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: quantum dots;semiconductor lasers;dual-wavelength lasers;rate equations
公開日期: 1-Jun-2019
摘要: 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.
URI: http://dx.doi.org/10.3390/app9112246
http://hdl.handle.net/11536/152206
DOI: 10.3390/app9112246
期刊: APPLIED SCIENCES-BASEL
Volume: 9
Issue: 11
起始頁: 0
結束頁: 0
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