Optomechanical accelerometers offer in situ traceability to the international system of units through laser interferometry, providing an alternative to a calibration chain using instrumented shakers. Here, we examine the ‘self-calibrating’ property of a prototype optomechanical accelerometer for use as a seismic reference. We report the optomechanically derived sensitivity of the accelerometer and compare this in situ calibrated output to input accelerations from an instrumented shaker, finding agreement to be within 1%. The comparison spanned frequencies between 3Hz and 30Hz, and for sinusoidal accelerations with amplitudes ranging from 0.01ms⁻² to 0.6ms⁻². These results are evidence that optomechanically derived sensitivity calibration can be equivalent to established international methods for primary calibration.

光机加速度计通过激光干涉测量提供国际单位系统的原位可追溯性，为使用仪器化振动器的校准链提供了替代方案。在这里，我们研究了用作地震参考的原型光机械加速度计的“自校准”特性。我们报告了加速度计的光机械衍生灵敏度，并将该原位校准输出与来自仪表振动器的输入加速度进行比较，发现一致性在 1% 以内。比较跨越 3Hz 和 30Hz 之间的频率，以及振幅范围从 0.01ms ^-2到 0.6ms ^{-2 的}正弦加速度. 这些结果证明光机械衍生的灵敏度校准可以等同于已建立的国际初级校准方法。