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15 October 2015 Polarization control by ellipse-shaped photonic crystal pattern with higher absorption in VO2 film
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Proceedings Volume 9671, AOPC 2015: Advances in Laser Technology and Applications; 96711O (2015) https://doi.org/10.1117/12.2202683
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Abstract
In this paper, a photonic crystal (PC) pattern, using ellipse rods as the lattice point, is proposed to improve the absorption properties of the VO2 film. We set up a numerical model for the 2D PC patterned film and simulated the transmission property with Finite Difference Time Domain (FDTD) method. The optical absorption is achieved in near infrared by exacting Bloch mode at photonic band edge coupling the incident light from the free space to the large area resonant photonic band edge modes. The numerical simulation shows an obvious enhancement and the overall absorption is 26%. Moreover, we give a further study of the PC patterned film. Different polarization angle of light source and structure parameters are applied to study the polarization property of the film. The film shows discrepant absorption, thus the polarization control using this film can be realized further.
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Zhe Wang, Wei Hong, Qian Chen, and Guohua Gu "Polarization control by ellipse-shaped photonic crystal pattern with higher absorption in VO2 film", Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 96711O (15 October 2015); https://doi.org/10.1117/12.2202683
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