The properties of a tunable terahertz multichannel filter from one-dimensional photonic crystal dope by magnetized plasma defect

Journal Article · Mon Apr 15 04:00:00 EDT 2019 · Optical and Quantum Electronics

DOI:https://doi.org/10.1007/S11082-019-1826-8· OSTI ID:22950318

Xu, Mei-chen; Liu, Song; Zhong, Shuang-ying ^[1]

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1. Nanchang University (China)

The terahertz magnetize-field tunable filtering properties in a multichannel filter based on a one-dimensional photonic crystal doped by magnetized plasma are theoretically investigated. The considered structure of (AB){sub 4}(ACB){sub N}(AB){sub 4} is designed, where A and B are two dielectric layers, C is the plasma layer, and N is the defect number. First, the structure can be worked as a multichannel filter whose channel number equals N. Second, the defect mode frequencies are all red-shifted as the ratio of dielectric refractive index or the sum of the A and B layer length increases. Third, we find that the channel frequencies can be shifted as a function of the applied magnetic field and the defect mode frequencies are all red-shifted as the plasma density increases. And the thickness of a plasma layer also affects the intensity, position and number of the defect modes. Therefore, these unusual properties may provide a novel design idea of a tunable terahertz multichannel transmission filter in future.

• OSTI ID: 22950318
• Journal Information: Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 4 Vol. 51; ISSN OQELDI; ISSN 0306-8919
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTALS
DIELECTRIC MATERIALS
DOPED MATERIALS
LAYERS
LENGTH
MAGNETIC FIELDS
MAGNETS
PLASMA DENSITY
RED SHIFT
REFRACTIVE INDEX
THICKNESS