Planar Photonic Crystal Nanolasers (II) : Low-Threshold Quantum Dot Lasers(<Special Section>Photonic Crystals and Their Device Applications)
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概要
- 論文の詳細を見る
We have demonstrated low-threshold two-dimensional photonic crystal lasers with self-assembled InAs/GaAs quantum dots. Coupled cavity designs of whispering gallery modes are defined in square lattice photonic crystal slabs. Our lasers showed a small 120μW input pumping power threshold. Actual absorption power is evaluated to be less than 20μW. Our lasers show high spontaneous emission coupling (β) factors〜0.1. The mode volumes are expected to be 0.7-1.2 times cubed wavelength by our modelling. Based on threshold analysis, 80 QDs are the effective number of QDs defined as the number of QDs needed to make PC cavities transparent if they are on maximum optical field points. Using the same analysis we found that single quantum dot lasing is likely to occur both by proper alignment of the single quantum dot relative to geometries ofphotonic crystals and by using sharp QD emission lines in high-Q localized modes.
- 社団法人電子情報通信学会の論文
- 2004-03-01
著者
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Scherer Axel
Electrical Engineering California Institute Of Technology
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Yoshie Tomoyuki
Electrical Engineering California Institute Of Technology
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SHCHEKIN Oleg
Microelectronics Research Center, Electrical and Computer Engineering, the University of Texas at Au
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CHEN Hao
Microelectronics Research Center, Electrical and Computer Engineering, the University of Texas at Au
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DEPPE Dennis
Microelectronics Research Center, Electrical and Computer Engineering, the University of Texas at Au
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Deppe Dennis
Microelectronics Research Center Electrical And Computer Engineering The University Of Texas At Aust
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Shchekin Oleg
Microelectronics Research Center Electrical And Computer Engineering The University Of Texas At Aust
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Chen Hao
Microelectronics Research Center Electrical And Computer Engineering The University Of Texas At Aust
関連論文
- Planar Photonic Crystal Nanolasers (II) : Low-Threshold Quantum Dot Lasers(Photonic Crystals and Their Device Applications)
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