High quality factor microcavity lasers realized by circular photonic crystal with isotropic photonic band gap effect

Po Tsung Lee; Tsan Wen Lu; Jyun Hao Fan; Feng Mao Tsai

doi:10.1063/1.2724899

High quality factor microcavity lasers realized by circular photonic crystal with isotropic photonic band gap effect

Po Tsung Lee^*, Tsan Wen Lu, Jyun Hao Fan, Feng Mao Tsai

^*Corresponding author for this work

Department of Photonics

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

66 Scopus citations

Abstract

The photonic band gap (PBG) effect and its isotropy of sunflower-type circular photonic crystal (CPC) are obtained and investigated from the transmission spectra performed by finite-difference time-domain (FDTD) method. The PBG directional width variation is found to be only 6.7%. A well-confined whispering gallery mode (WGM) with azimuthal number of 6 is obtained by FDTD simulation from the CPC microcavity formed by seven missing air holes (C2). Ascribed to the deep and isotropic PBG confinement, the WGM lasing with very-low threshold (∼0.13 mW) and very-high-quality (Q) factor (>10000) is obtained from well-fabricated CPC C2 microcavity lasers.

Original language	English
Article number	151125
Journal	Applied Physics Letters
Volume	90
Issue number	15
DOIs	https://doi.org/10.1063/1.2724899
State	Published - 24 Apr 2007

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abstract = "The photonic band gap (PBG) effect and its isotropy of sunflower-type circular photonic crystal (CPC) are obtained and investigated from the transmission spectra performed by finite-difference time-domain (FDTD) method. The PBG directional width variation is found to be only 6.7%. A well-confined whispering gallery mode (WGM) with azimuthal number of 6 is obtained by FDTD simulation from the CPC microcavity formed by seven missing air holes (C2). Ascribed to the deep and isotropic PBG confinement, the WGM lasing with very-low threshold (∼0.13 mW) and very-high-quality (Q) factor (>10000) is obtained from well-fabricated CPC C2 microcavity lasers.",

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AU - Lee, Po Tsung

AU - Lu, Tsan Wen

AU - Fan, Jyun Hao

AU - Tsai, Feng Mao

PY - 2007/4/24

Y1 - 2007/4/24

N2 - The photonic band gap (PBG) effect and its isotropy of sunflower-type circular photonic crystal (CPC) are obtained and investigated from the transmission spectra performed by finite-difference time-domain (FDTD) method. The PBG directional width variation is found to be only 6.7%. A well-confined whispering gallery mode (WGM) with azimuthal number of 6 is obtained by FDTD simulation from the CPC microcavity formed by seven missing air holes (C2). Ascribed to the deep and isotropic PBG confinement, the WGM lasing with very-low threshold (∼0.13 mW) and very-high-quality (Q) factor (>10000) is obtained from well-fabricated CPC C2 microcavity lasers.

AB - The photonic band gap (PBG) effect and its isotropy of sunflower-type circular photonic crystal (CPC) are obtained and investigated from the transmission spectra performed by finite-difference time-domain (FDTD) method. The PBG directional width variation is found to be only 6.7%. A well-confined whispering gallery mode (WGM) with azimuthal number of 6 is obtained by FDTD simulation from the CPC microcavity formed by seven missing air holes (C2). Ascribed to the deep and isotropic PBG confinement, the WGM lasing with very-low threshold (∼0.13 mW) and very-high-quality (Q) factor (>10000) is obtained from well-fabricated CPC C2 microcavity lasers.

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High quality factor microcavity lasers realized by circular photonic crystal with isotropic photonic band gap effect

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