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The phase profiles of the reflected circularly polarized waves can be freely manipulated by virtue of a co-polarization reflective metasurface. Based on the co-polarization reflective metasurface, a circularly polarized wave reflection focusing metasurface can be achieved, it can make the reflected waves focus at a focal spot under the normal incidence of circularly polarized plane waves. In this paper, a reflection focusing metasurface is designed. It is found that around the central frequency f=16 GHz, the reflected waves focus on a focal spot above the metasurface with a focal distance L=200 mm under the normal incidence of right-handed circularly polarized waves. However, in the case of normal incidence of left-handed circularly waves, the reflected waves focus on an imaginary focal spot below the metasurface with the focal distance L=-200 mm. The beam-width at the focal spot and focal depth are also calculated by using CST Microwave Studio. The simulation results indicate that the beam-width at the focal spot is approximately equal to the operating wavelength. Therefore, the circularly polarized wave reflection focusing metasurface has a good performance for focusing the reflected waves. In addition, the proposed focusing metasurface displays the advantages of the long focal depth and the broad operating bandwidth.
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Keywords:
- metasurface /
- co-polarization reflection /
- reflection focusing /
- focal depth
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[25] Wang J F, Qu S B, Ma H, Xu Z, Zhang A X, Zhou H, Chen H Y, Li Y F 2012 Appl. Phys. Lett. 101 201104
[26] Feng M D, Wang J F, Ma H, Mo W D, Ye H J, Qu S B 2013 J. Appl. Phys. 114 074508
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[28] Zhao Y, Alù A 2011 Phys. Rev. B 84 205428
[29] Zhu H L, Cheung S W, Chung K L, Yuk T I 2013 IEEE Trans. Antennas Propag. 61 4615
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[1] Pinchuk A O, Schatz G C 2007 J. Opt. Soc. Am. 24 2313
[2] Paul O, Reinhard B, Krolla B, Beigang R, Rahm M 2010 Appl. Phys. Lett. 96 241110
[3] Yu N F, Capasso F 2014 Nat. Mater. 13 139
[4] Francesco M, Andrea A 2014 Chin. Phys. B 23 047809
[5] Lee J H, Yoon J W, Jung M J, Hong J K, Song S H, Magnusson R 2014 Appl. Phys. Lett. 104 233505
[6] Li X, Xiao S Y, Cai B G, He Q, Cui T J, Zhou L 2012 Opt. Lett. 37 4940
[7] Pors A, Nielsen M G, Eriksen R L, Bozhevolnyi S I 2013 Nano Lett. 13 829
[8] Jiang X Y, Ye J S, He J W, Wang X K, Hu D, Feng S F, Kan Q, Zhang Y 2013 Opt. Express 21 30030
[9] Hu D, Wang X K, Feng S F, Ye J S, Sun W F, Kan Q, Klar P J, Zhang Y 2013 Adv. Opt. Mater. 1 186
[10] Huang Y W, Zhao Q C, Kalyoncu S K, Torun R, Lu Y, Capolino F, Boyraz O 2014 Appl. Phys. Lett. 104 161106
[11] Yu N F, Genevet P, Kats M A, Aieta F, Tetienne J P, Capasso F, Gaburro Z 2011 Science 334 333
[12] Yu N, Aieta F, Genevet P, Kats M A, Gaburro Z, Capasso F 2012 Nano Lett. 12 6328
[13] Aieta F, Genevet P, Kats M A, Yu N F, Blanchard R, Gaburro Z, Capasso F 2012 Nano Lett. 12 4932
[14] Aieta F, Genevet P, Yu N, Kats M A, Gaburro Z, Capasso F 2012 Nano Lett. 12 1702
[15] Nathaniel K, Grady N K, Heyes J E, Chowdhury D R, Zeng Y, Reiten M T, Azad A K, Taylor A J, Dalvit D A R, Chen H T 2013 Science 340 1304
[16] Huang L, Chen X, Mhlenbernd H, Li G, Bai B, Tan Q, Jin G, Zentgraf T, Zhang S 2012 Nano Lett. 12 5750
[17] Pfeiffer C, Grbic A 2013 Phys. Rev. Lett. 110 197401
[18] Ni X, Emani N K, Kildishev A V, Boltasseva A, Shalaev V M 2012 Science 335 427
[19] SunY Y, Han L, Shi X Y, Wang Z N, Liu D H 2013 Acta Phys. Sin. 62 104201 (in Chinese) [孙彦彦, 韩璐, 史晓玉, 王兆娜, 刘大禾 2013 62 104201]
[20] Li Y F, Zhang J Q, Qu S B, Wang J F, Chen H Y, Zheng L, Xu Z, Zhang A X 2014 J. Phys. D: Appl. Phys. 47 425103
[21] Li Y F, Zhang J Q, Qu S B, Wang J F, Chen H Y, Xu Z, Zhang A X 2014 Acta Phys. Sin. 63 084103 (in Chinese) [李勇峰, 张介秋, 屈绍波, 王甲富, 陈红雅, 徐卓, 张安学 2014 63 084103]
[22] Sun S, Yang K Y, Wang C M, Juan T K, Chen W T, Liao C Y, He Q, Xiao S Y, Kung W T, Guo G Y, Zhou L, Tsai D P 2012 Nano Lett. 12 6223
[23] Sun S L, He Q, Xiao S Y, Xu Q, Li X, Zhou L 2012 Nat. Mater. 11 426
[24] Huang L L, Chen X Z, Bai B F, Tan Q F, Jin G F, Zentgraf T, Zhang S 2013 Light: Sci. Appl. 2 e70
[25] Wang J F, Qu S B, Ma H, Xu Z, Zhang A X, Zhou H, Chen H Y, Li Y F 2012 Appl. Phys. Lett. 101 201104
[26] Feng M D, Wang J F, Ma H, Mo W D, Ye H J, Qu S B 2013 J. Appl. Phys. 114 074508
[27] Chen H Y, Wang J F, Ma H, Qu S B, Xu Z, Zhang A X, Yan M B, Li Y 2014 J. Appl. Phys. 115 154504
[28] Zhao Y, Alù A 2011 Phys. Rev. B 84 205428
[29] Zhu H L, Cheung S W, Chung K L, Yuk T I 2013 IEEE Trans. Antennas Propag. 61 4615
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