New method for reduction of carrier lifetime in semiconductor optical amplifier using assist light

被引：4

作者：

Tsurusawa, M ^{[1
]}

Usami, M ^{[1
]}

Matsushima, Y ^{[1
]}

机构：

[1] KDD R&D Labs, Kamifukuoka, Saitama 3568502, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 2B期

关键词：

semiconductor optical amplifier; saturable absorber; carrier lifetime; stimulated recombination; optical processing;

D O I：

10.1143/JJAP.38.1265

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a novel method for reducing the absorption recovery time in a semiconductor optical amplifier driven under a loss condition for a signal pulse that acts as a saturable absorber. The reduction of the absorption recovery time was successfully demonstrated by stimulated recombination due to CW additional light (assist light) whose wavelength was longer than that of the signal. The injection current and the wavelength of the assist light for the reduction effect were optimized experimentally. The stimulated recombination process is ultrafast and generates little heat since the process does not involve carrier transport in the device. This technique can be applied to ultra high repetition rate optical processing. A minimum absorption recovery time of less than 50 ps was confirmed.

引用

页码：1265 / 1268

页数：4

共 9 条

[1] CARRIER-DEPENDENT NONLINEARITIES AND MODULATION IN AN INGAAS SQW WAVE-GUIDE [J].