期刊
OPTICS EXPRESS
卷 21, 期 17, 页码 19972-19981出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.019972
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资金
- Research Corporation for Science Advancement [10626]
- San Francisco State University
- University of Surrey (FRSF award)
- University of Surrey (Santander award)
- National Science Foundation [NSF DMR-1105417, NYU-MRSEC DMR-0820341, DMR-0606415, ECCS-1041083]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1105417] Funding Source: National Science Foundation
We report the first experimental demonstration of a TE-polarization photonic band gap (PBG) in a 2D isotropic hyperuniform disordered solid (HUDS) made of dielectric media with a dielectric index contrast of 1.6:1, very low for PBG formation. The solid is composed of a connected network of dielectric walls enclosing air-filled cells. Direct comparison with photonic crystals and quasicrystals permitted us to investigate band-gap properties as a function of increasing rotational isotropy. We present results from numerical simulations proving that the PBG observed experimentally for HUDS at low index contrast has zero density of states. The PBG is associated with the energy difference between complementary resonant modes above and below the gap, with the field predominantly concentrated in the air or in the dielectric. The intrinsic isotropy of HUDS may offer unprecedented flexibilities and freedom in applications (i. e. defect architecture design) not limited by crystalline symmetries. (C) 2013 Optical Society of America
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