2024/05/06 by Yubo Wang, Y. B. Guo, Wang, Yubo +7
Engineering · Computer Science · #Photonic and Optical Devices #Neural Networks and Reservoir Computing #Optical Network Technologies
paper · pdf · doi:10.48550/arxiv.2405.03088
Sapphire is a promising wideband substrate material for visible photonics. It is a common growth substrate for III-nitride light-emitting diodes and laser structures. Doped sapphires are important gain media foundational to the development of titanium-sapphire and ruby lasers. For lasers operating at visible and near-infrared wavelengths, a photonic platform that minimizes loss while maximizing gain material overlap is crucial. Here, we introduce a novel low-loss waveguiding strategy that establishes high-performance integrated photonics on sapphire substrates. This platform achieves a high intrinsic quality factor of 5.6 million near 780 nm and features direct compatibility with a range of solid-state laser gain media.