基于激光反馈干涉测量法的纳米级传感

Nanometric sensing with laser feedback interferometry.

作者信息

Choi Daeyoung, Wishon Michael J, Viktorov E A, Citrin D S, Locquet A

出版信息

Opt Lett. 2019 Feb 15;44(4):903-906. doi: 10.1364/OL.44.000903.

DOI:10.1364/OL.44.000903

Abstract

We demonstrate a nanometric sensor based on feedback interferometry in a distributed feedback (DFB) laser by using a measurement of either the optical frequency or laser voltage. We find that in an optimal range of optical feedback, the sensor operates reliably down to an extrapolated 12 nm; for the sensor demonstrated here at ∼1550 nm, this provides a minimum detectible displacement of λ/130.

摘要

我们展示了一种基于分布式反馈（DFB）激光器中反馈干涉测量法的纳米级传感器，该传感器通过测量光频率或激光电压来工作。我们发现，在光反馈的最佳范围内，该传感器能够可靠地工作至外推至12纳米；对于此处展示的约1550纳米波长的传感器，这提供了λ/130的最小可检测位移。