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: | 1-六月-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 |
顯示於類別: | 期刊論文 |