论文标题
具有绝对重力加速的光学镊子的位移校准
Displacement calibration of optical tweezers with absolute gravitational acceleration
论文作者
论文摘要
近年来，真空中光学陷阱的悬浮颗粒在精确的传感器开发和寻找新物理学方面显示出巨大的潜力。校准的准确性将检测到的信号与捕获粒子的绝对位移有关是绝对测量性能的关键因素。在本文中，我们建议并在实验上证明了一种基于真空中自由落体颗粒的光学镊子的新型校准方法，其中引入了重力加速度作为绝对参考。我们的工作提供了具有非常确定性和可追溯性的校准协议，这对于基于光学悬浮的颗粒提高精度传感的准确性很重要。
In recent years, levitated particles of optical traps in vacuum have shown enormous potential in precision sensor development and searching for new physics. The accuracy of the calibration relating the detected signal to absolute displacement of the trapped particle is a critical factor for absolute measurement performance. In this paper, we suggest and experimentally demonstrate a novel calibration method for optical tweezers based on free-falling particles in vacuum, where the gravitational acceleration is introduced as an absolute reference. Our work provides a calibration protocol with great certainty and traceability, which is significant in improving the accuracy of precision sensing based on optically levitated particles.
