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arXiv · 2504.14589

Second-order nonlinear disordered photonic media

Rabisankar Samanta·Romolo Savo·Claudio Conti·Sushil Mujumdar
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Abstract

The field of complex photonics has garnered significant interest due to its rich physics and myriad applications spanning physics, engineering, biology, and medicine. However, a substantial portion of research focuses primarily on the linear medium. Over the years, optical nonlinearity, particularly the second order denoted as $\chi^{(2)}$, has been harnessed for diverse applications such as frequency conversions, three-wave mixing, material characterizations, and bio-imaging. When $\chi^{(2)}$-nonlinearity combines with the disorder, a new realm of physics emerges, which in the last 30 years has witnessed substantial progress in fundamental studies and futuristic applications. This review aims to explore fundamental concepts concerning $\chi^{(2)}$-nonlinear disordered media, chart the field's evolution, highlight current interests within the research community, and conclude with a future perspective.

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Rabisankar Samanta, Romolo Savo, Claudio Conti, Sushil Mujumdar. 2025-04-20. Second-order nonlinear disordered photonic media. https://arxiv.org/abs/2504.14589

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