Towards an optical "black hole": surface reshaping for an optimal optical coupling into turbid medium

Jonathan V. Thompson; Brett H. Hokr; Vladislav V. Yakovlev

doi:10.1117/12.2252632

21 February 2017 Towards an optical "black hole": surface reshaping for an optimal optical coupling into turbid medium

Jonathan V. Thompson, Brett H. Hokr, Vladislav V. Yakovlev

Proceedings Volume 10073, Adaptive Optics and Wavefront Control for Biological Systems III; 100730W (2017) https://doi.org/10.1117/12.2252632
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Light propagation in a turbid medium is typically considered for flat or regular surfaces. However, such an approximation often does not reflect an experimental reality, and, in this report, we attempt to optimize the surface of a scattering medium to improve the optical coupling into the medium. By making conical microchannels in a turbid medium using short-pulsed laser micro-drilling, we show that we were able to substantially increase the photon life-time and diffusion radius in the medium.

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Jonathan V. Thompson, Brett H. Hokr, and Vladislav V. Yakovlev "Towards an optical "black hole": surface reshaping for an optimal optical coupling into turbid medium", Proc. SPIE 10073, Adaptive Optics and Wavefront Control for Biological Systems III, 100730W (21 February 2017); https://doi.org/10.1117/12.2252632

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