Enhancement of terahertz electromagnetic wave of difference wave mixing due to quantum beat tuning
| Project/Area Number |
26289088
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Kobe University |
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Principal Investigator |
Kojima Osamu 神戸大学, 工学研究科, 准教授 (00415845)
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| Research Collaborator |
HOGG Richard グラスゴー大学, 教授
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2016: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Keywords | 励起子 / テラヘルツ電磁波 / 差周波混合 / 多重量子井戸 / GaAs / 量子井戸 / 非線形光学効果 / テラヘルツ / 半導体光物性 / 超格子 / 量子閉じ込め / 励起し |
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| Outline of Final Research Achievements |
We have investigated the enhancement of terahertz electromagnetic waves due to exciton quantum beat generated by difference frequency mixing excited by two continuous wave lasers in a semiconductor multiple quantum well. The maximum intensity was obtained by two continuous wave lasers with the energies of heavy-hole and light-hole excitons at room temperature. Generally, in the zincblende structure semiconductors, the oscillator strength of heavy-hole excitons is three times larger than that of light-hole excitons, so that the maximum intensity was expected at the heavy-hole exciton energy. However, in the experiment, the maximum intensity was obtained at the light-hole exciton energy, which suggests that it is possible to enhance the difference frequency mixing process by quantum beat.
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Report
(5 results)
Research Products
(57 results)
