Near-room-temperature continuous-wave operation of multiple-active-region 1.55 μm vertical-cavity lasers with high differential efficiency

被引：35

作者：

Kim, JK ^{[1
]}

Nakagawa, S ^{[1
]}

Hall, E ^{[1
]}

Coldren, LA ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 20期

关键词：

D O I：

10.1063/1.1325400

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present completely monolithic, single-step grown, bipolar cascade vertical-cavity surface-emitting lasers at 1.55 mum with a greater-than-unity differential quantum efficiency. A typical device had a threshold current density of 1 kA/cm(2), a threshold voltage of 3.2 V, and demonstrated continuous wave operation up to 8 degreesC. Devices smaller than 10 mum in diameter lased single mode. Active regions in our device were epitaxially stacked in three stages. This technique of multiple-active regions enabled the greater-than-unity differential quantum efficiency operation, which is essential in constructing high-efficiency microwave optical links with gain. We report the device characteristics and a model on the scaling properties of active region stacking in multiple-active-region vertical-cavity lasers. (C) 2000 American Institute of Physics. [S0003-6951(00)01546-1].

引用

页码：3137 / 3139

页数：3

共 8 条

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