论文标题
可调纤维Fabry-Perot腔具有高无源稳定性
Tunable Fiber Fabry-Perot Cavities with High Passive Stability
论文作者
论文摘要
我们提出了具有高无源机械稳定性的三个高技巧可调节的整体纤维Fabry-Perot腔（FFPC）。纤维镜子固定在开槽的玻璃套圈中，这可以保证谐振器的固有比对。一个附加的压电元件可以在整个自由传播范围内快速调整FFPC共振频率，以实现两个设计。对于低至$ 20 \ $ MHz的反馈带宽的反馈带宽实现了稳定的空腔共振锁定，这表明了较高的被动稳定性。在另一个限制下，可以获得可获得$ 27 \ $ kHz的锁定带宽，靠近第一个机械共振。根平方的频率波动被抑制至$ \ sim 2 \，$％的腔线宽度。在较大的频率范围内，频率噪声由系统机械共振的热噪声极限主导。所展示的小占地设备可以在广泛的应用中有利地使用，例如基于腔的传感技术，光学滤镜或量子光胶接口。
We present three high finesse tunable monolithic fiber Fabry-Perot cavities (FFPCs) with high passive mechanical stability. The fiber mirrors are fixed inside slotted glass ferrules, which guarantee an inherent alignment of the resonators. An attached piezoelectric element enables fast tuning of the FFPC resonance frequency over the entire free-spectral range for two of the designs. Stable locking of the cavity resonance is achieved for feedback bandwidths as low as $20\,$mHz, demonstrating the high passive stability. At the other limit, locking bandwidths up to $27\,$kHz, close to the first mechanical resonance, can be obtained. The root-mean-square frequency fluctuations are suppressed down to $\sim 2\,$% of the cavity linewidth. Over a wide frequency range, the frequency noise is dominated by the thermal noise limit of the system's mechanical resonances. The demonstrated small footprint devices can be used advantageously in a broad range of applications like cavity-based sensing techniques, optical filters or quantum light-matter interfaces.
