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Proceedings Paper

Photonic limiters with enhanced dynamic range
Author(s): Rodion Kononchuk; Nicholaos Limberopoulos; Igor Anisimov; Ilya Vitebskiy; Andrey Chabanov
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Paper Abstract

Optical limiters transmit low intensity input light while blocking input light with the intensity exceeding certain limiting threshold. Conventional passive limiters utilize nonlinear optical materials, which are transparent at low light intensity and turn absorptive at high intensity. Strong nonlinear absorption, though, can result in over- heating and destruction of the limiter. Another problem is that the limiting threshold provided by the available optical material with nonlinear absorption is too high for many applications. To address the above problems, the nonlinear material can be incorporated in a photonic structure with engineered dispersion. At low intensity, the photonic structure can display resonant transmission via localized mode(s), while at high intensity the resonant transmission can disappear, and the entire stack can become highly re ective (not absorptive) within a broad frequency range. In the proposed design, the transition from the resonant transmission at low intensity to nearly total re ectivity at high intensity does not rely on nonlinear absorption; instead, it requires only a modest change in the refractive index of the nonlinear material. The latter implies a dramatic increase in the dynamic range of the limiter. The main idea is to eliminate the high-intensity resonant transmission by decoupling the localized (resonant) modes from the input light, rather than suppressing those modes using nonlinear absorption. Similar approach can be used for light modulation and switching.

Paper Details

Date Published: 20 February 2018
PDF: 7 pages
Proc. SPIE 10513, Components and Packaging for Laser Systems IV, 105130W (20 February 2018); doi: 10.1117/12.2291875
Show Author Affiliations
Rodion Kononchuk, The Univ. of Texas at San Antonio (United States)
Nicholaos Limberopoulos, Air Force Research Lab. (United States)
Igor Anisimov, Air Force Research Lab. (United States)
Ilya Vitebskiy, Air Force Research Lab. (United States)
Andrey Chabanov, The Univ. of Texas at San Antonio (United States)

Published in SPIE Proceedings Vol. 10513:
Components and Packaging for Laser Systems IV
Alexei L. Glebov; Paul O. Leisher, Editor(s)

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