Manipulation of Rare-Earth-Ion Emission by Nonlinear-Mode Oscillation in a Lithium Niobate Microcavity.

Wu, Jiangwei; He, Yuxuan; Yang, Qilin; Wang, Xueyi; Liu, Xiangmin; Geng, Yong; Guo, Guangcan; Zhou, Qiang et al. · Nano Lett · 2025

basic_science · Level V

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Abstract

Optical microcavities provide opportunities to explore nonlinear effects and enable classic and quantum applications. This work investigates the manipulation of rare-earth-ion emission through nonlinear-mode oscillation in an erbium-doped thin-film lithium niobate microdisk cavity and demonstrates the changed laser performance. A pulsed transmission was generated with a detuned laser injected into the cavity. If the injected laser meets the pump band of the erbium ions, the output communication-band laser is also pulsed. The pulse's repetition rate and duration are changed with different detuned pump wavelengths and powers. All-optical temporal control of the emitter-cavity interaction paves the way to manipulation of quantum states with solid-state devices.