Lens Design with Silicon Wafer for Terahertz Wave Transmission

Abstract:

Terahertz waves can pass through silicon wafer with less loss than traditional lenses. By selecting square, circular and sectors as building blocks, a serial of equivalent lenses for terahertz wave transmission were designed in the vertical plane of the silicon wafer, including hemispherical convex, concave mirror, triangular prism and spherocylinder lenses. The lens’ 2-D design in this work is much simpler than its actual 3-D shape. Besides high transmit ability, silicon wafer also has high refractive index. When a lens is oriented horizontally, it can act as a graded-index photonic crystal waveguide, due to the existence of a band gap, especially for cylinder and prism lens.

• Periodical: Applied Mechanics and Materials (Volume 214)
• Pages: 227-231
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.214.227
• Online since: November 2012
• Authors: Yong Wan, Ming Hui Jia, Hao Wen Gong, Yang Yang, Ying Cui
• Keywords: Bandgap, Lens, Photonic Crystal (PC), Wave, Waveguide

References

[1] Kumar S, Lee AWM. IEEE J Sel Top Quantum Electron 2008; 14(2): 333-44.

[2] Khosropanah P, Zhang W, Hovenier JN, Gao JR, Klapwijk TM, Amanti MI, et al. J Appl Phys 2008; 104(113106): 1-6.

[3] Lo YH, Leonhardt R. Opt Express 2008; 16(20): 15991-8.

[4] Boriskin AV, Nosich AI, Boriskina SV, Benson TM, Sewell P, Altintas A. Microwave Opt Technol Lett 2004; 43(6): 515-8.

DOI: 10.1002/mop.20520

[5] Bitzer A, Helm H, Walther M. IEEE J Sel Top Quantum Electron 2008; 14(2): 476-81.

[6] Kim S, Murakami H, Tonouchi M. IEEE J Sel Top Quantum Electron 2008; 14(2): 498-504.

[7] Kadlec C, Kadlec F, Kuzel P, Blary K, Mounaix P. Opt Lett 2008; 33(19): 2275-7.

DOI: 10.1364/ol.33.002275

[8] Foca E, Foll H, Cartensen J, Sergentu VV, Tiginyanu IM, Daschner F, et al. Appl Phys Lett 2006; 88(011102): 1-3.

[9] D. Luo, G. Alagappan, X.W. Sun, ea al., Opt. Comm., 2009, 282(2): 329-332.

[10] Li J, Lu M-H, Feng L, Liu X-P, Chen Y-F. J Appl Phys 2007; 101(013516): 1-5.