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arXiv · 1812.11727

Real-time Electrical Tuning of an Optical Spring on a Monolithically Integrated Ultrahigh Q Lithium Nibote Microresonator

Zhiwei Fang·Sanaul Haque·Jintian Lin·Rongbo Wu·Jianhao Zhang·Min Wang·Junxia Zhou·Muniyat Rafa·Tao Lu·Ya Cheng
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Abstract

Cavity optomechanics, the study of the interplay between light and mechanical properties of matter, has triggered a wide range of groundbreaking researches from cavity quantum electrodynamics, label free single molecule detection to the creation of phonon laser. Using femtosecond laser direct writing followed by chemo-mechanical polishing, here we report an ultrahigh quality (Q~10^7) factor lithium niobate (LN) whispering gallery microresonator monolithically integrated with in-plane microelectrodes. Coherent regenerative optomechanical oscillation with an effective mechanical quality (Qm) factor as high as 2.86*10^8 is observed in air. We demonstrate real-time electrical tuning of the optomechanical frequency with an electro-mechanical tuning efficiency around -134 kHz/100V.

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Zhiwei Fang, Sanaul Haque, Jintian Lin, Rongbo Wu, Jianhao Zhang, Min Wang, Junxia Zhou, Muniyat Rafa, Tao Lu, Ya Cheng. 2018-12-31. Real-time Electrical Tuning of an Optical Spring on a Monolithically Integrated Ultrahigh Q Lithium Nibote Microresonator. https://doi.org/10.1364/ol.44.001214

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