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arXiv · 2405.03088

Heterogeneous sapphire-supported low-loss photonics platform

Yubo Wang·Yu Guo·Yiyu Zhou·Hao Xie·Hong X. Tang
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Abstract

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.

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Yubo Wang, Yu Guo, Yiyu Zhou, Hao Xie, Hong X. Tang. 2024-05-06. Heterogeneous sapphire-supported low-loss photonics platform. https://arxiv.org/abs/2405.03088

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