Single-shot time-reversed optical focusing into and through scattering media.

ABSTRACT: Optical time reversal can focus light through or into scattering media, which raises a new possibility for conquering optical diffusion. Because optical time reversal must be completed within the correlation time of speckles, enhancing the speed of time-reversed optical focusing is important for practical applications. Although employing faster digital devices for time-reversal helps, more efficient methodologies are also desired. Here, we report a single-shot time-reversed optical focusing method to minimize the wavefront measurement time. In our approach, all information requisite for optical time reversal is extracted from a single-shot hologram, and hence no other preconditions or measurements are required. In particular, we demonstrate the first realization of single-shot time-reverse

SUBMITTER: Cheng Z 

PROVIDER: S-EPMC8317964 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature