The resonant electromagnetic fields of an array of metallic slits acting as Fabry-Perot cavities

被引:82
作者
Hibbins, AP [1 ]
Lockyear, MJ [1 ]
Sambles, JR [1 ]
机构
[1] Univ Exeter, Sch Phys, Electromagnet Mat Grp, Exeter EX4 4QL, Devon, England
关键词
D O I
10.1063/1.2204818
中图分类号
O59 [应用物理学];
学科分类号
摘要
Fabry-Perot cavities are perhaps the best known of the optical transmission resonators, with cavity field enhancement accomplished by two parallel and partially reflecting planes. Recently it has been shown that arrays of narrow slits cut into a metal substrate are similarly able to exhibit resonant transmission modes. An analysis of the field solutions and transmission properties of this resonant array is compared to the well-known etalon and dielectric slab geometries, revealing a most elegant illustration of the principles of Maxwell's electromagnetism. It is demonstrated that the matching of the propagating field to each slit-cavity mode is made possible through strong diffraction at each end. Furthermore, the interface between the slit cavities and semi-infinite space beyond acts as a high-impedance surface on resonance, reflecting the field with a positive reflection-amplitude coefficient. Metallic slit arrays have several advantages over conventional Fabry-Perot resonators with interesting application potential.
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页数:5
相关论文
共 15 条
[1]   Light transmission through metallic channels much smaller than the wavelength [J].
Astilean, S ;
Lalanne, P ;
Palamaru, M .
OPTICS COMMUNICATIONS, 2000, 175 (4-6) :265-273
[2]  
Collin R. E., 1991, FIELD THEORY GUIDED
[3]   Horizontal and vertical surface resonances in transmission metallic gratings [J].
Collin, S ;
Pardo, F ;
Teissier, R ;
Pelouard, JL .
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 2002, 4 (05) :S154-S160
[4]  
Edwards D.F., 1985, Handbook of optical constants of solids
[5]  
Fabry C, 1899, Ann Chim Ser, V7, P115
[6]   Squeezing millimeter waves into microns [J].
Hibbins, AP ;
Sambles, JR ;
Lawrence, CR ;
Brown, JR .
PHYSICAL REVIEW LETTERS, 2004, 92 (14) :143904-1
[7]   Remarkable transmission of microwaves through a wall of long metallic bricks [J].
Hibbins, AP ;
Sambles, JR ;
Lawrence, CR ;
Robinson, DM .
APPLIED PHYSICS LETTERS, 2001, 79 (17) :2844-2846
[8]   Complete transmission through a two-dimensional diffraction grating [J].
Kriegsmann, GA .
SIAM JOURNAL ON APPLIED MATHEMATICS, 2004, 65 (01) :24-42
[9]  
LOCKYEAR MJ, UNPUB PHYS REV LETT
[10]   Transmission resonances on metallic gratings with very narrow slits [J].
Porto, JA ;
García-Vidal, FJ ;
Pendry, JB .
PHYSICAL REVIEW LETTERS, 1999, 83 (14) :2845-2848