Enhancement of light extraction from two-dimensional photonic crystal slab structures

Han Youl Ryu; Jeong Ki Hwang; Yong Jae Lee; Yong Hee Lee

doi:10.1109/2944.999175

Enhancement of light extraction from two-dimensional photonic crystal slab structures

Han Youl Ryu, Jeong Ki Hwang, Yong Jae Lee, Yong Hee Lee

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Efficient light extraction from various two-dimensional photonic crystal slab structures is studied. By using the finite-difference time-domain method, effects of finite air-hole depth, and the cladding refractive index on the light extraction efficiency are investigated. The largest extraction efficiency is obtained in the photonic crystal slab with entirely drilled air hole patterns and large index contrast with the bottom cladding. Using InGaAsP quantum wells emitting at 1.5 μm large enhancement of photoluminescence is observed from the slab structures with air-hole patterns fully transferred through the active medium and the bottom cladding. The photoluminescence enhancement relative to the as-grown wafer is ∼8 in the oxide-supported slab and ∼ 13 in the free-standing slab. The large light extraction enhancement results from the coupling to leaky modes above the light line of a band structure. In addition, the extraction behaviors of a triangular lattice and a square lattice are compared, and it is shown that their distinctive extraction characteristics well reflect the features of each band structure.

Original language	English
Pages (from-to)	231-237
Number of pages	7
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	8
Issue number	2
DOIs	https://doi.org/10.1109/2944.999175
State	Published - Mar 2002
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received December 7, 2001; revised January 23, 2002. This work was supported by the National Research Laboratory Project of Korea. H.-Y. Ryu, Y.-J. Lee, and Y.-H. Lee are with the Department of Physics, Korea Advanced Institute of Science and Technology, 305-701 Taejon, Korea. J.-K. Hwang was with the Department of Physics, Korea Advanced Institute of Science and Technology, 305-701 Taejon, Korea. He is now with the Agilent Technology, San Jose, CA 95131 USA. Publisher Item Identifier S 1077-260X(02)03776-0.

Keywords

Extraction efficiency
Finite-difference time-domain method
InGaAsP quantum well
Photoluminescence
Photonic crystal slab

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10.1109/2944.999175

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title = "Enhancement of light extraction from two-dimensional photonic crystal slab structures",

abstract = "Efficient light extraction from various two-dimensional photonic crystal slab structures is studied. By using the finite-difference time-domain method, effects of finite air-hole depth, and the cladding refractive index on the light extraction efficiency are investigated. The largest extraction efficiency is obtained in the photonic crystal slab with entirely drilled air hole patterns and large index contrast with the bottom cladding. Using InGaAsP quantum wells emitting at 1.5 μm large enhancement of photoluminescence is observed from the slab structures with air-hole patterns fully transferred through the active medium and the bottom cladding. The photoluminescence enhancement relative to the as-grown wafer is ∼8 in the oxide-supported slab and ∼ 13 in the free-standing slab. The large light extraction enhancement results from the coupling to leaky modes above the light line of a band structure. In addition, the extraction behaviors of a triangular lattice and a square lattice are compared, and it is shown that their distinctive extraction characteristics well reflect the features of each band structure.",

keywords = "Extraction efficiency, Finite-difference time-domain method, InGaAsP quantum well, Photoluminescence, Photonic crystal slab",

author = "Ryu, {Han Youl} and Hwang, {Jeong Ki} and Lee, {Yong Jae} and Lee, {Yong Hee}",

note = "Funding Information: Manuscript received December 7, 2001; revised January 23, 2002. This work was supported by the National Research Laboratory Project of Korea. H.-Y. Ryu, Y.-J. Lee, and Y.-H. Lee are with the Department of Physics, Korea Advanced Institute of Science and Technology, 305-701 Taejon, Korea. J.-K. Hwang was with the Department of Physics, Korea Advanced Institute of Science and Technology, 305-701 Taejon, Korea. He is now with the Agilent Technology, San Jose, CA 95131 USA. Publisher Item Identifier S 1077-260X(02)03776-0.",

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N2 - Efficient light extraction from various two-dimensional photonic crystal slab structures is studied. By using the finite-difference time-domain method, effects of finite air-hole depth, and the cladding refractive index on the light extraction efficiency are investigated. The largest extraction efficiency is obtained in the photonic crystal slab with entirely drilled air hole patterns and large index contrast with the bottom cladding. Using InGaAsP quantum wells emitting at 1.5 μm large enhancement of photoluminescence is observed from the slab structures with air-hole patterns fully transferred through the active medium and the bottom cladding. The photoluminescence enhancement relative to the as-grown wafer is ∼8 in the oxide-supported slab and ∼ 13 in the free-standing slab. The large light extraction enhancement results from the coupling to leaky modes above the light line of a band structure. In addition, the extraction behaviors of a triangular lattice and a square lattice are compared, and it is shown that their distinctive extraction characteristics well reflect the features of each band structure.

AB - Efficient light extraction from various two-dimensional photonic crystal slab structures is studied. By using the finite-difference time-domain method, effects of finite air-hole depth, and the cladding refractive index on the light extraction efficiency are investigated. The largest extraction efficiency is obtained in the photonic crystal slab with entirely drilled air hole patterns and large index contrast with the bottom cladding. Using InGaAsP quantum wells emitting at 1.5 μm large enhancement of photoluminescence is observed from the slab structures with air-hole patterns fully transferred through the active medium and the bottom cladding. The photoluminescence enhancement relative to the as-grown wafer is ∼8 in the oxide-supported slab and ∼ 13 in the free-standing slab. The large light extraction enhancement results from the coupling to leaky modes above the light line of a band structure. In addition, the extraction behaviors of a triangular lattice and a square lattice are compared, and it is shown that their distinctive extraction characteristics well reflect the features of each band structure.

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Enhancement of light extraction from two-dimensional photonic crystal slab structures

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