激光线宽
激光器
材料科学
光电子学
二极管
半导体激光器理论
光学
注射播种机
光子学
混合硅激光器
可调谐激光器
硅
物理
波长
作者
Ewoud Vissers,Stijn Poelman,Camiel Op de Beeck,Kasper Van Gasse,Bart Kuyken
出处
期刊:Optics Express
[The Optical Society]
日期:2021-04-29
卷期号:29 (10): 15013-15013
被引量:11
摘要
Integrated semiconductor mode-locked lasers have shown promise in many applications and are readily fabricated using generic InP photonic integration platforms. However, the passive waveguides offered in such platforms have relatively high linear and nonlinear losses that limit the performance of these lasers. By extending such lasers with, for example, an external cavity the performance can be increased considerably. In this paper, we demonstrate for the first time that a high-performance mode-locked laser can be achieved with a butt-coupling integration technique using chip scale silicon nitride waveguides. A platform-independent SiN/SU8 coupler design is used to couple between the silicon nitride external cavity and the III/V active chip. Mode-locked lasers at 2.18 GHz and 15.5 GHz repetition rates are demonstrated with Lorentzian RF linewidths several orders of magnitude smaller than what has been demonstrated on monolithic InP platforms. The RF linewidth was 31 Hz for the 2.18 GHz laser.
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