Advances of Nonlinear Optical Materials

Dear Colleagues,

Nonlinear optical (NLO) materials, as the heart of frequency conversion systems, are used to convert coherent light to other desirable wavelengths, ranging from deep-ultraviolet (DUV) to infrared (IR). The conversion occurs via a number of processes, such as second-harmonic generation (SHG) and difference-frequency generation. NLO materials have played an increasing role in a variety of areas, such as information storage, medical devices, laser systems, detectors, and photolithography. Ideally, SHG materials should satisfy several fundamental requirements, including proper phase matching, high NLO coefficients, stability in various chemical environments, a high laser-induced damage threshold (LIDT), relevant transparent windows in applied wavelengths, and the ability to be grown as large, crack-free single crystals. Therefore, exploring new NLO fundamental modules, achieving a good performance balance, and identifying novel NLO crystal candidates are topics of interest in the field of NLO materials.

In this Special Issue, we will collect and review the latest developments in experimental and theoretical studies of new NLO materials, focusing on their synthesis methods, design strategies, theoretical mechanisms, linear and nonlinear optical properties, etc. We believe that this Special Issue will shed light on the further exploration and design of high-performance NLO materials.

Dr. Lin Xiong
Prof. Dr. Liujiang Zhou
Guest Editors

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