2010 Fiscal Year Final Research Report
Study on basic technologies for nonlinear optoelectronic integrated circuits
| Project/Area Number |
19206011
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KONDO Takashi The University of Tokyo, 大学院・工学系研究科, 教授 (60205557)
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| Co-Investigator(Kenkyū-buntansha) |
WADA Kazumi 東京大学, 大学院・工学系研究科, 教授 (30376511)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 非線形光学 / 波長変換 / 半導体レーザ / 擬似位相整合 / 化合物半導体 / 分子線エピタキシー / シリコンフォトニクス |
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| Research Abstract |
We have succeeded in fabricating high-quality GaAs/AlGaAs waveguiding QPM wavelength conversion devices based on the sublattice reversal epitaxy technique, and have achieved the lowest propagation loss of 2.7 dB/cm (GaAs waveguide @1.55 μm) and the highest SHG conversion efficiency of 34 %/W (2.96-mm-long Al0.5Ga0.5As waveguide @1.55 μm fundamental). Low-temperature MBE regrowth is essential for this achievement. Formation of (111)A dislocations and spatial compositional modulation should be suppressed in order to achieve further improvements. We have also proposed novel high-performance AlGaAs waveguiding devices incorporating new phase matching techniques (HIC-BPM, ZQPM and TQPM).
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