AI 中文总结
研究可见光光谱中片上可重构相干光源，基于混合介质超表面构建全光可调纳米激光器，集成染料增益介质与高Q BIC共振超表面，引入相变材料实现调谐，展示室温激射及不同激光控制下的性能，用于多种光应用。
AI 中文摘要
可见光谱中片上可重构相干光源的发展对下一代光学计算和高速数据处理至关重要。本文展示了一种基于混合介质超表面的全光可调纳米激光器。该平台将罗丹明B染料增益介质与支持高Q连续统束缚态（BIC）共振的五氧化二铌超表面集成。通过引入低损耗相变材料三硫化锑实现有源、非易失性调谐。演示了616nm室温激射，品质因数>2050。用连续波激光使相变材料结晶，将激射发射调谐到621nm，品质因数>1454，近红外皮秒激光触发其重新非晶化。这种稳健、热保护的纯光控制方案与相梯度超表面设计相结合，实现了用于同时激射波长调谐和波前控制的相干、非局域发光超表面。这项工作为全光可调超表面纳米激光器在高速光通信、神经形态光子学、动态全息显示和可重构量子光源中的应用提供了基础示范。
英文摘要
The development of on-chip, reconfigurable coherent light sources operating in the visible spectrum is critical for next-generation optical computing and high-speed data processing. Here, we demonstrate an all-optically tunable nanolaser based on a hybrid dielectric metasurface. The platform integrates a Rhodamine B (Rd B) dye gain medium with a Niobium Pentoxide (Nb2O5) metasurface supporting a high-Q Bound State in the Continuum (BIC) resonance. Active, non-volatile tuning is achieved by incorporating the low-loss phase change material (PCM) Antimony Trisulfide (Sb2S3). We demonstrate room-temperature lasing at 616 nm with Q-factor > 2050. A continuous-wave (CW) laser is utilized for the crystallization of the PCM, tuning the lasing emission to crystalline at 621 nm with Q-factor > 1454, while a near-infrared (NIR) ps-laser triggers its re-amorphization. This robust, thermally protected optical-only control scheme, combined with a phase-gradient metasurface design, realizes a coherent, nonlocal light-emitting metalens for simultaneous lasing wavelength tuning and wavefront control. This work provides a foundational demonstration of an all-optical tunable metalens-based nanolaser for applications in high-speed optical communication, neuromorphic photonics, dynamic holographic displays, and reconfigurable quantum light sources.
