Main > Chinese Optics Letters >  Volume 16 >  Issue 8 >  Page 082601 > Article
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  • Received: Apr. 9, 2018

    Accepted: Jun. 6, 2018

    Posted: Jan. 17, 2019

    Published Online: Aug. 2, 2018

    The Author Email: Huawei Liang (hwliang@szu.edu.cn), Min Zhang (zhangmin@szu.edu.cn)

    DOI: 10.3788/COL201816.082601

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    Hui Yin, Jiaqi Li, Huawei Liang, Min Zhang, Hong Su, Ireng Ling Li. Full-transparent zone plates for THz focusing[J]. Chinese Optics Letters, 2018, 16(8): 082601

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Schematics of the (a) FZP and (b) FTZP.

Fig. 1. Schematics of the (a) FZP and (b) FTZP.

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Dependence of the THz wave transmission on the substrate thickness. The peak intensity at the focal point for the focal length f=5 cm is shown by the point solid line, and the transmission rate is shown by the dashed line.

Fig. 2. Dependence of the THz wave transmission on the substrate thickness. The peak intensity at the focal point for the focal length f=5cm is shown by the point solid line, and the transmission rate is shown by the dashed line.

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THz field intensities on the longitudinal sections for the focusing of FTZPs: (a) f=4 cm, (b) f=5 cm, (c) f=6 cm; and FZPs: (d) f=4 cm, (e) f=5 cm, (f) f=6 cm.

Fig. 3. THz field intensities on the longitudinal sections for the focusing of FTZPs: (a) f=4cm, (b) f=5cm, (c) f=6cm; and FZPs: (d) f=4cm, (e) f=5cm, (f) f=6cm.

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(a) Experimental setup for the FTZP focusing. (b) FTZP sample.

Fig. 4. (a) Experimental setup for the FTZP focusing. (b) FTZP sample.

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Measured THz intensity distributions on the focal planes for FTZPs: (a) f=4 cm, (b) f=5 cm, (c) f=6 cm; and FZPs: (d) f=4 cm, (e) f=5 cm, (f) f=6 cm.

Fig. 5. Measured THz intensity distributions on the focal planes for FTZPs: (a) f=4cm, (b) f=5cm, (c) f=6cm; and FZPs: (d) f=4cm, (e) f=5cm, (f) f=6cm.

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