Fabrication, optimisation and characterisation of monolithic semiconductor mode-locked lasers and colliding-pulse mode-locked lasers at millimeter-wave frequencies

被引：4

作者：

Passerini, M ^{[1
]}

Sorel, M ^{[1
]}

Laybourn, PJR ^{[1
]}

Giuliani, G ^{[1
]}

Donati, S ^{[1
]}

机构：

[1] Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy

来源：

MICROWAVE AND TERAHERTZ PHOTONICS | 2004年 / 5466卷

关键词：

semiconductor ridge waveguide laser; passive mode-locking; colliding-pulse mode-locking; mm-wave generation;

D O I：

10.1117/12.545801

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work reports on the fabrication, optimisation and characterisation of monolithic mode-locked lasers (MLLs) and colliding-pulse mode-locked (CPM) lasers with repetition rate in the range 10-60 GHz. The devices consist of double section split-contact ridge waveguide lasers fabricated in GaAs/AlGaAs double quantum well (DQW) material. For CPM devices, the saturable absorber section was fabricated with a coplanar ground-signal-ground (G-S-G) pad structure. The optimum saturable absorber size for efficient mode-locking is found experimentally. The fabricated devices are characterised in terms of operating regimes (Continuous Wave, Self-Pulsation, Mode-Locking) and the mode-locking signals were observed in the frequency domain using an external fast photodiode. In the case of CPM devices a mm-wave signal could also be extracted directly from the saturable absorber section of the laser using a microwave probe.

引用

页码：116 / 122

页数：7

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