290 fs switching time of Fe-doped quantum well saturable absorbers in a microcavity in 1.55 μm range

被引：21

作者：

Gicquel-Guézo, M ^{[1
]}

Loualiche, S ^{[1
]}

Even, J ^{[1
]}

Labbé, C ^{[1
]}

Dehaese, O ^{[1
]}

Le Corre, A ^{[1
]}

Folliot, H ^{[1
]}

Pellan, Y ^{[1
]}

机构：

[1] INSA Rennes, Lab Etud Nanostruct Semicond, F-35043 Rennes, France

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 24期

关键词：

D O I：

10.1063/1.1804239

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultrafast all-optical switch has been demonstrated by inserting Fe-doped multiple quantum wells (MQWs) in asymmetric Fabry-Perot microcavities. Heavy Fe doping during the InGaAs/InP MQW epitaxial growth is a well-controlled technique to reach subpicosecond optical time constants. An asymmetric Fabry-Perot microcavity using gold metal as a back mirror and air/InP interface as a front mirror is realized. Pump-probe experiments using a conventional scheme on such switching devices are investigated. The device reveals an ultrafast response time, as low as 290 fs, for an iron concentration of 2x10(19) cm(-3), a contrast ratio of 8 dB, a threshold switching fluence of 3.5 muJ/cm(-2), and a 37-nm 3-dB bandwidth in the 1.55-mum telecommunication spectral range. (C) 2004 American Institute of Physics.

引用

页码：5926 / 5928

页数：3

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