论文标题
通过Newton的环的距离校准Yttrium Lithium Fluoride Whispering Gallery模式谐振器
Distance calibration via Newton's rings in yttrium lithium fluoride whispering gallery mode resonators
论文作者
论文摘要
在这项工作中，我们分析了由单晶Yttrium氟化锂（YLF）制成的第一个耳语库模式谐振器（WGMR）。圆盘形的谐振器是使用单点钻石转动制造的，并在$ 10^9 $的订单上表现出很高的内在质量因子（$ q $）。此外，我们采用了一种新的方法，基于牛顿环的微观成像，通过梯形棱镜的背面。该方法可用于将光线与WGMR相结合，并监测腔与耦合棱镜之间的分离。需要准确校准耦合棱镜与WGMR之间的距离，因为它可以用于改善实验控制和条件，即准确的耦合距离校准可以有助于调整到所需的耦合方案中，并可以用来避免由碰撞造成的碰撞造成的撞击率和WGMR之间的潜在损害。在这里，我们将两种不同的梯形棱镜与高Q $ YLF WGMR一起演示和讨论此方法。
In this work, we analyze the first whispering gallery mode resonator (WGMR) made from monocrystalline yttrium lithium fluoride (YLF). The disc-shaped resonator is fabricated using single-point diamond turning and exhibits a high intrinsic quality factor ($Q$) on the order of $10^9$. Moreover, we employ a novel method based on microscopic imaging of Newton's rings through the back of a trapezoidal prism. This method can be used to evanescently couple light in to a WGMR and monitor the separation between the cavity and the coupling prism. Accurately calibrating the distance between a coupling prism and a WGMR is desirable as it can be used to improve experimental control and conditions, i.e., accurate coupler gap calibration can aid in tuning into desired coupling regimes and can be used to avoid potential damage caused by collisions between the coupling prism and the WGMR. Here, we use two different trapezoidal prisms together with the high-$Q$ YLF WGMR to demonstrate and discuss this method.
