Robustness of Ultrahigh-Q Microcavity General Packaged Devices

Abstract

Whispering gallery mode (WGM) microcavities can trap light in spatial and temporal dimensions with high-quality factors and small mode volumes, and it has become one of the most significant platforms for micro-nano photonic research. However, the WGM cavity is easily disturbed by external environmental factors, which hinders the development of its practical application. In this work, fused silica microrod resonator devices are sealed by utilizing packaged technology developed specifically for this framework, and the durability test of microcavity devices was carried out. The experimental results showed that our packaged WGM cavity can maintain a quality (Q) factor of up to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">9</sup> , and has the advantages of compact size, strong robustness, and versatility, which will promote the process of large-scale application of optical microcavity devices.