Author:
Liang Yupei,An Ning,Tan Teng,Tang Fan,Rao Yunjiang,Yao Baicheng
Abstract
Leveraging the sub-comb merging effect, we realized a microcomb-based gas sensor in a graphene-functionalized microcavity. The sub-comb heterodyne measurement enables ultra-sensitive gas detection of down to 4 ppb level.