Short-wavelength intersubband transitions down to 1.6 μm in ZnSe/BeTe type-II superlattices

被引：64

作者：

Akimoto, R ^{[1
]}

Kinpara, Y ^{[1
]}

Akita, K ^{[1
]}

Sasaki, F ^{[1
]}

Kobayashi, S ^{[1
]}

机构：

[1] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 05期

关键词：

D O I：

10.1063/1.1343843

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report photoinduced electron intersubband absorption in ZnSe/BeTe type-II superlattices. The wavelength of the intersubband transition as short as 1.6 mum, covering the 1.55 mum optical communication wavelengths within its absorption band width (similar to 250 nm), is achieved in the ZnSe/BeTe SLs with 4.5 ML-thick ZnSe layers. The intensity in photoinduced intersubband absorption increases sublinearly with pump intensity, reflecting the characteristic recombination processes of electron-hole pairs in a heterostructure with type-II band alignment. (C) 2001 American Institute of Physics.

引用

页码：580 / 582

页数：3

共 13 条

[1]

AKIMOTO R, 2000, 25 INT C PHYS SEM OS

[2]

BASTARD G, 1988, WAVE MECH APPL SEMIC, P89

[3] Intersubband absorption in GaN/AlGaN multiple quantum wells in the wavelength range of λ∼1.75-4.2 μm [J].