Center for Molecular Spectroscopy and Dynamics

2019 IBS AOI Conference

We investigate the dynamics of the time-gated reflection eigenchannels within homogeneous scattering medium. From the internal field distribution obtained from numerical simulations, we discovered the transition of the reflection enhancing mechanism as the target flight time of the time-gated reflection eigenchannel increases. Eigenchannels tend to focus their energy to the high-reflecting particles at the short flight times, while they raise energy in the entire view field due to long-range interference in the long flight times. The competition between these two mechanisms and its connection to transmission through the medium is explained using an analytic model. We confirmed the expected transition behavior in transmission enhancement in the experiment.