谐振器
激光线宽
激光器
材料科学
光电子学
光学
半导体激光器理论
Q系数
激光功率缩放
戒指(化学)
物理
有机化学
化学
作者
Chao Xiang,Warren Jin,Joel Guo,Coleman Williams,Andrew Netherton,Lin Chang,Paul A. Morton,John E. Bowers
出处
期刊:Optics Express
[The Optical Society]
日期:2020-06-22
卷期号:28 (14): 19926-19926
被引量:28
摘要
High-Q Si ring resonators play an important role in the development of widely tunable heterogeneously integrated lasers. However, while a high Q-factor (Q > 1 million) is important for ring resonators in a laser cavity, the parasitic high-power density in a Si resonator can deteriorate the laser performance at high power levels due to nonlinear loss. Here, we experimentally show that this detrimental effect can happen at moderate power levels (a few milliwatts) where typical heterogeneously integrated lasers work. We further compare different ring resonators, including extended Si ring resonators and Si3N4 ring resonators and provide practical approaches to minimize this effect. Our results provide explanations and guidelines for high-Q ring resonator designs in heterogeneously integrated tunable lasers, and they are also applicable for hybrid integrated butt-coupled lasers.
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