摘要
A novel cladding structure is proposed and analyzed for semiconductor quantum-well lasers to achieve a small vertical-beam divergence and a low threshold current density simultaneously. This cladding structure is designed to guide a wide optical mode but with a high peak intensity in quantum wells. The wide expansion of the optical mode results in a small beam divergence. In addition, the high optical intensity in quantum wells causes a low threshold current density. This novel cladding structure is optimized. The result shows that this type of cladding structures can achieve a beam divergence as small as 14.6° while the threshold current density remains small.
| 原文 | English |
|---|---|
| 頁（從 - 到） | 1588-1595 |
| 頁數 | 8 |
| 期刊 | IEEE Journal of Quantum Electronics |
| 卷 | 32 |
| 發行號 | 9 |
| DOIs | |
| 出版狀態 | Published - 1996 |