Strontium titanate/silicon-based terahertz photonic crystal multilayer stack

J. Z. Xin; K. L. Jim; J. Yang; X. J. Gong; L. Q. Chen; F. Gao; Yuen Hong Tsang; H. L.W. Chan; Chi Wah Leung

doi:10.1007/s00339-011-6743-z

Strontium titanate/silicon-based terahertz photonic crystal multilayer stack

J. Z. Xin, K. L. Jim, J. Yang, X. J. Gong, L. Q. Chen, F. Gao, Yuen Hong Tsang, H. L.W. Chan, Chi Wah Leung

Research output: Journal article publication › Journal article › Academic research › peer-review

1 Citation (Scopus)

Abstract

A one-dimensional photonic crystal working in the terahertz (THz) range was designed and implemented. To facilitate the design, the transmission properties of strontium titanate crystals were characterized by THz-time-domain spectroscopy. Relatively high refractive index (∼18.5) and transmission ratio (0.08) were observed between 0.2 to 1 THz. A stacked structure of (Si dSi/STO dSTO)N/Si dSiwas then designed, with transmission spectra calculated by the transfer matrix method. The effects of the filling ratio (dSTO/(dSi+dSTO)), periodicity (dSi+dSTO) and the number of repeats N on the transmission of PC were investigated. The effect of introducing a defect layer was also studied. Based on these, Si/STO multilayers with STO defect thickness of 125 μm and 200 μm were measured. The shift of the defect mode was observed and compared with the calculations.

Original language	English
Pages (from-to)	109-115
Number of pages	7
Journal	Applied Physics A: Materials Science and Processing
Volume	107
Issue number	1
DOIs	https://doi.org/10.1007/s00339-011-6743-z
Publication status	Published - 1 Apr 2012

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1007/s00339-011-6743-z

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title = "Strontium titanate/silicon-based terahertz photonic crystal multilayer stack",

abstract = "A one-dimensional photonic crystal working in the terahertz (THz) range was designed and implemented. To facilitate the design, the transmission properties of strontium titanate crystals were characterized by THz-time-domain spectroscopy. Relatively high refractive index (∼18.5) and transmission ratio (0.08) were observed between 0.2 to 1 THz. A stacked structure of (Si dSi/STO dSTO)N/Si dSiwas then designed, with transmission spectra calculated by the transfer matrix method. The effects of the filling ratio (dSTO/(dSi+dSTO)), periodicity (dSi+dSTO) and the number of repeats N on the transmission of PC were investigated. The effect of introducing a defect layer was also studied. Based on these, Si/STO multilayers with STO defect thickness of 125 μm and 200 μm were measured. The shift of the defect mode was observed and compared with the calculations.",

author = "Xin, {J. Z.} and Jim, {K. L.} and J. Yang and Gong, {X. J.} and Chen, {L. Q.} and F. Gao and Tsang, {Yuen Hong} and Chan, {H. L.W.} and Leung, {Chi Wah}",

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doi = "10.1007/s00339-011-6743-z",

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AU - Xin, J. Z.

AU - Jim, K. L.

AU - Yang, J.

AU - Gong, X. J.

AU - Chen, L. Q.

AU - Gao, F.

AU - Tsang, Yuen Hong

AU - Chan, H. L.W.

AU - Leung, Chi Wah

PY - 2012/4/1

Y1 - 2012/4/1

N2 - A one-dimensional photonic crystal working in the terahertz (THz) range was designed and implemented. To facilitate the design, the transmission properties of strontium titanate crystals were characterized by THz-time-domain spectroscopy. Relatively high refractive index (∼18.5) and transmission ratio (0.08) were observed between 0.2 to 1 THz. A stacked structure of (Si dSi/STO dSTO)N/Si dSiwas then designed, with transmission spectra calculated by the transfer matrix method. The effects of the filling ratio (dSTO/(dSi+dSTO)), periodicity (dSi+dSTO) and the number of repeats N on the transmission of PC were investigated. The effect of introducing a defect layer was also studied. Based on these, Si/STO multilayers with STO defect thickness of 125 μm and 200 μm were measured. The shift of the defect mode was observed and compared with the calculations.

AB - A one-dimensional photonic crystal working in the terahertz (THz) range was designed and implemented. To facilitate the design, the transmission properties of strontium titanate crystals were characterized by THz-time-domain spectroscopy. Relatively high refractive index (∼18.5) and transmission ratio (0.08) were observed between 0.2 to 1 THz. A stacked structure of (Si dSi/STO dSTO)N/Si dSiwas then designed, with transmission spectra calculated by the transfer matrix method. The effects of the filling ratio (dSTO/(dSi+dSTO)), periodicity (dSi+dSTO) and the number of repeats N on the transmission of PC were investigated. The effect of introducing a defect layer was also studied. Based on these, Si/STO multilayers with STO defect thickness of 125 μm and 200 μm were measured. The shift of the defect mode was observed and compared with the calculations.

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DO - 10.1007/s00339-011-6743-z

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JO - Applied Physics A: Materials Science and Processing

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IS - 1

ER -

Strontium titanate/silicon-based terahertz photonic crystal multilayer stack

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