Current-injection spiral-shaped microcavity disk laser diodes with unidirectional emission

被引：146

作者：

Kneissl, M

Teepe, M

Miyashita, N

Johnson, NM

Chern, GD

Chang, RK

机构：

[1] Xerox Corp, Palo Alto Res Ctr, Palo Alto, CA 94304 USA

[2] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 14期

关键词：

D O I：

10.1063/1.1691494

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A spiral-shaped microcavity heterojunction laser diode fabricated with InGaN multiple quantum wells is demonstrated to operate under current injection conditions and emit unidirectionally. Room-temperature laser operation was achieved for microcavity disk radii ranging from 50 to 350 mum and threshold current densities as low as 4.6 kA/cm(2). Unidirectional laser emission is clearly revealed in the far-field pattern with the lateral divergence angle ranging from 60degrees to 75degrees. Output power of more than 25 mW was obtained for emission wavelengths near 400 nm. (C) 2004 American Institute of Physics.

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页码：2485 / 2487

页数：3

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