In this study, we theoretically proposed a method to achieve an electromagnetically induced transparency (EIT)-like effect in a whispering gallery mode resonator (WGMR) and experimentally validated the method in a lithium niobate (LN) device. Benefitting from the electro-optic and inverse piezoelectric effects of the LN material, two modes of the LN WGMR that are close in frequency can be tuned at different tuning rates, resulting in EIT-like resonance lineshapes. By varying the electric field applied to the LN WGMR, the full dynamic of the EIT-like phenomenon can be precisely controlled. The experimental results agreed well with the calculations based on the coupled mode theory. Moreover, we observed a hysteresis resulting from the photorefractive effect of LN. We believe our proposed method and demonstrated devices offer a way to control an EIT-like effect, which could have potential applications in light storage, quantum information processing, and enhanced sensing techniques.

中文翻译：

---

通过电子控制在铌酸锂谐振器中产生电磁感应透明效应

在这项研究中，我们从理论上提出了一种在回音壁模式谐振器 (WGMR) 中实现类电磁感应透明 (EIT) 效应的方法，并在铌酸锂 (LN) 器件中对该方法进行了实验验证。受益于 LN 材料的电光和逆压电效应，LN WGMR 的两种频率接近的模式可以以不同的调谐速率进行调谐，从而产生类似 EIT 的共振线形。通过改变施加到 LN WGMR 的电场，可以精确控制类 EIT 现象的全部动态。实验结果与基于耦合模式理论的计算结果吻合良好。此外，我们观察到由 LN 的光折变效应引起的滞后现象。