Ultrafast Tunneling Spectroscopy of Semiconductor Superlattices

半导体超晶格的超快隧道光谱

• 批准号: 62460022
• 负责人: MASUMOTO Yasuaki
• 金额: $ 5.06万
• 依托单位: Institute of Physics, University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460022/
• 关键词: tunneling; トンネル過程; 光非線型性; 励起子; ΓーX谷間散乱; 超高速ポンプ・プローブ分光法; 量子井戸; Г-X谷間散乱; フェムト秒ポンプ・プローブ分光法; 半導体多重量子井戸; トンネル効果

The competition bewteen tunneling (vertical transport) and relaxation (exciton formation) of photo-generated carriers in GaAs-Al_<0.29>Ga_<0.71>As quantum wells in an electric field has been studied by using population mixing and time-correlated single photon conuting techniques.Secondary, we have studied the optical properties of Al_xGa_<1-x>As-AlAs ternary alloy multi-quantum-well structures around two r-X crossovers by means of photoluminescence and absorption saturation.Finally, the interlayer r-X scattering rate of photoexcited electrons was measured in staggered-alignment Al_<0.34>Ga_<0.66>As-AlAs ternary alloy multi-quantum-well structures for the first time. The scattering process was directly probed by the femtosecond pump-and probe spectroscopy.

竞争是通过使用群体混合和时间相关的单个光子对立技术来研究的，我们已经对量子井进行了研究。通过光致发光和吸收饱和度在两个R-X跨界周围的多量器 - 孔结构。从字面上来说，用交错分配的Al_ <0.34> GA____________ <0.66> As-Alas Ternary ternary ternary ternary ternary ternary ternary ternary ternary ternary ternary ternary ternary y-Quantum-Quantum-Quantum-well结构，以相互分配为单位的光激发电子的Inthayer R-X散射速率。飞秒泵和探针光谱直接探测了散射过程。

项目成果

M.Adachi;Y.Masumoto: Physical Review B.

M.Adachi；Y.Masumoto：物理评论 B.

舛本泰章: 固体物理〈光物性,電子格子相互作用〉特集号. 137-145 (1987)

Yasuaki Masumoto：固体物理学特刊（光学性质、电子晶格相互作用）137-145（1987）。

F.Sasaki.;Y.Masumoto: Physical Review B.

F.Sasaki.；Y.Masumoto：物理评论 B.

F.Sakaki;Y.Masumoto: Physical Review B.

F.Sakaki；Y.Masumoto：物理评论 B.

Y.Masumoto.;F.Sasaki: Journal of Luminescence. 40. 709-710 (1988)

Y.Masumoto.；F.Sasaki：发光杂志。