Second-order correlation function supported optical sensing for particle detection
Abstract
We propose a new sensing method based on the measurement of the second-order autocorrelation of the output of micro- and nanolasers with intensity feedback. The sensing function is implemented through the feedback-induced threshold shift, whose photon statistics is controlled by the feedback level in a characteristic way for different laser sizes. The specific response offers performances which can be adapted to different kinds of sensors. We propose the implementation of two schemes capable of providing a quantitative sensing signal and covering a broad range of feedback levels: one is utilizing the evolution of g(0), the other one is the ratio between central and side peaks in g. Laser-threshold-based sensing could, thanks to its potential sensitivity, gain relevance in biomolecular diagnostics and security monitoring.
Cite
@article{arxiv.2105.13551,
title = {Second-order correlation function supported optical sensing for particle detection},
author = {T. Wang and C. Jiang and J. Zou and H. Zhou and X. Lin and H. Chen and G. P. Puccioni and G. Wang and G. L. Lippi},
journal= {arXiv preprint arXiv:2105.13551},
year = {2021}
}