Abstract

Optical topological transition of iso-frequency surfaces strongly modifies the propagation behavior within media. However, in most previous studies, optical topological transition was achieved by tuning the frequency. In this paper, we achieve optical topological transition at fixed frequencies by tuning the direction of the optical axis in crystal quartz. Also, according to the energy flow method, we calculate the refractive angle within the crystal quartz. The calculated results show that both positive and negative refraction can be realized by tuning the direction of the optical axis in the crystal quartz. This optical topological transition in crystal quartz by tilting the optical axis might have potential applications in refraction controlling, spontaneous emission engineering, thermal emission engineering, and phonon polariton engineering.

© 2021 Optical Society of America

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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