| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1544840 | Physica E: Low-dimensional Systems and Nanostructures | 2011 | 4 Pages |
Abstract
⺠A prototype of terahertz laser based on four-level asymmetric double quantum well (QW) structures is presented. ⺠The prominent feature of this prototype is its close proximity of subband 0 and 1. ⺠An ensemble Monte Carlo method is adopted to comparatively analyze the electron population on each subband. ⺠We find this design can greatly improve the optically pumping efficiency. ⺠We propose to use the electric field Stark effect in QW to obtain the close proximity of subband 0 and 1 in double QW.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Dong-Feng Liu,