Second-Harmonic Generation in Two-Dimensional Materials

Research output: Chapter in Book/Report/Conference proceedingChapter


Second-harmonic generation in two-dimensional materials is used as a spectroscopic technique to characterise samples obtained for example from exfoliation or chemical vapour deposition. This technique provides information on the crystal orientation, on the number of layers and their stacking arrangement.
The second-harmonic generation of two-dimensional crystals from the family of Gallium chalcogenides and transition metal dichalcogenides has been reported to be comparable or larger than that of commonly used nonlinear crystals even though there is a large variation in the reported values. This large variation is due to the fact that the second-harmonic generation is not obtained from a direct measurement.
Due to their strong SHG, two-dimensional materials can be potentially exploited in optical devices as e.g. frequency converter.
Original languageEnglish
Title of host publicationEncyclopedia of Modern Optics
EditorsR Guenther, D Steel
Number of pages6
Publication statusPublished - 28 Feb 2018


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