From Photon Momentum Transfer to Accelerometer Based on Optical Levitated Microsphere at Dynamic Input from 0.1 μg to 1 g

As a typical application of photon momentum transfer, optically levitated systems are known for their ideal isolation from mechanical dissipation and thermal noise. These characteristics offer extraordinary potential for acceleration precision sensing and have attracted extensive attention in both fundamental and applied physics. Although considerable improvements of optically levitated accelerometers have been reported, the dynamic testing of the sensing performance remains a crucial challenge before utilization in practical application scenarios. In this work, we present a dual-beam optically levitated accelerometer and demonstrate a test with dynamic inputs for the first time. An acceleration sensing sensitivity of 0.1 μg (g = 9.8 m/s²) and a measurement range of 1 g are achieved. These advancements solidify the potential of optically levitated accelerometers for deployment in practical domains, including navigation, intelligent driving, and industrial automation, building a bridge between laboratory systems and real-world applications.