Creation of spin-photonic devices

利用电子自旋控制的半导体结构创造光学功能器件将发展新型的光学和量子电子信号处理。我们制作了具有长电子自旋弛豫时间的垂直腔面发射激光器，实现了宽波长范围内圆偏振激光。我们还实现了具有纳米结构的左右圆极化的快速切换。此外，我们还生长了工作在光通信波长下的量子阱，并估算了它们的电子-自旋弛豫时间。

Creation of optical functional devices using electron-spin controlled semiconductor structures will develop new types of optical and quantum-electronic signal processing. We fabricated vertical-cavity surface-emitting lasers with long electron-spin relaxation times and achieved lasing with a circular polarization over a wide wavelength range. We also achieved fast switching between right and left circular polarizations with nano-size structures. Moreover, we grew quantum wells operating at the optical communication wavelength and evaluated their electron-spin relaxation times.