Evaluation of the Returned Electromagnetic Signal from Retro-reflectors in Turbid Media

Iman Hassani nia; Skyler Wheaton; Hooman Mohseni

doi:10.1038/s41598-019-43059-z

Evaluation of the Returned Electromagnetic Signal from Retro-reflectors in Turbid Media

Iman Hassani nia, Skyler Wheaton, Hooman Mohseni^*

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We provide first-principle theoretical and numerical simulations using the coherent Transfer Matrix Approach (TMA) to describe the behavior of the three main class of the optical beacons namely phase conjugators, reflectors, and retroreflectors within a turbid medium. Our theory describes the extraordinary enhancement (about 5 dB) offered by retroreflectors compared to reflectors in our detailed experiments and shows that they effectively act as local optical phase conjugators. Moreover, the performance of retroreflectors shows little degradation for increased light incident angles in turbid media, while the performance of reflectors degrades drastically. These results may find applications for detection of the echoes of electromagnetic radiation in turbid media.

Original language	English (US)
Article number	6550
Journal	Scientific reports
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41598-019-43059-z
State	Published - Dec 1 2019

Funding

This research was partially supported by ARO award # W911NF-11-1-0390 and the computational resources and staff contributions provided for the Quest high-performance computing facility at Northwestern University which is jointly supported by the Office of the Provost, the Office for Research, and Northwestern University Information Technology.

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abstract = "We provide first-principle theoretical and numerical simulations using the coherent Transfer Matrix Approach (TMA) to describe the behavior of the three main class of the optical beacons namely phase conjugators, reflectors, and retroreflectors within a turbid medium. Our theory describes the extraordinary enhancement (about 5 dB) offered by retroreflectors compared to reflectors in our detailed experiments and shows that they effectively act as local optical phase conjugators. Moreover, the performance of retroreflectors shows little degradation for increased light incident angles in turbid media, while the performance of reflectors degrades drastically. These results may find applications for detection of the echoes of electromagnetic radiation in turbid media.",

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Evaluation of the Returned Electromagnetic Signal from Retro-reflectors in Turbid Media

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