Hybrid external cavity laser with an amorphous silicon-based photonic crystal cavity mirror

Funding: EU ERC-SG 337508 DANCER, EU H2020 Marie Skłodowska-Curie 713654 and SFI 18/TIDA/6128.The authors present results on the performance of a hybrid external cavity photonic crystal laser-comprising semiconductor optical amplifier, and a 2D photonic crystal cavity fabricated in low-temperature amorphous silicon. The authors demonstrate that lithographic control over amorphous silicon photonic crystal cavity-resonant wavelengths is possible, and that single-mode lasing at optical telecommunications wavelengths is possible on an amorphous silicon platform.Publisher PDFPeer reviewe