Whispering-gallery-mode microresonators, one of the most important components of photonic integrated circuits, have the ability to dramatically boost light–matter interactions. In this Letter, we demonstrate effective sum-frequency generation via modal phase matching in a triply resonant lithium-niobate-on-insulator microdisk resonator through two individual continuous wave pumps working in the communication band. The sum-frequency conversion efficiency is measured to be ${2.22} \times {{10}^{ - 6}}\;\,\,{{\rm mW}^{ - 1}}$. This work shows a high-efficiency frequency convertor that may be applied in on-chip integrated optics in the future.

中文翻译：

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模态相位匹配在绝缘子上铌酸锂微盘中产生总和频率

耳语画廊模式微谐振器是光子集成电路最重要的组件之一，具有显着增强光与物质相互作用的能力。在这封信中，我们演示了通过在通信频带中工作的两个独立的连续波泵，在三重谐振型绝缘体上铌酸锂谐振器微盘谐振器中，通过模态相位匹配产生有效的总和频率。总和频率转换效率经测量为$ {2.22} \ times {{10} ^ {-6}} \; \，\，{{\ rm mW} ^ {-1}} $。这项工作展示了一种高效的频率转换器，将来可能会应用于片上集成光学器件。