Journal
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
Volume 17, Issue 3, Pages 349-355Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218863508004184
Keywords
Zero permittivity; spatial filtering; matched impedance; multilayered structure
Categories
Funding
- Swedish Research Council (VR) [20064048]
- National Basic Research Program of China [2004CB719803]
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Based on the effective medium theory, a multilayered spatial filter is constructed with an ultralow-permittivity material and a typical dielectric. Besides the special property of an ultralow refractive index, the designed periodic structure is impedance-matched to free space, regardless of the total thickness. The present spatial filter works well even when moderate loss exists.
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