Mode-locking of a terahertz laser by direct phase synchronization

被引：29

作者：

Maysonnave, J. ^{[1
]}

Maussang, K. ^{[1
]}

Freeman, J. R. ^{[1
]}

Jukam, N. ^{[1
]}

Madeo, J. ^{[1
]}

Cavalie, P. ^{[1
]}

Rungsawang, R. ^{[1
]}

Khanna, S. P. ^{[2
]}

Linfield, E. H. ^{[2
]}

Davies, A. G. ^{[2
]}

Beere, H. E. ^{[3
]}

Ritchie, D. A. ^{[3
]}

Dhillon, S. S. ^{[1
]}

Tignon, J. ^{[1
]}

机构：

[1] Univ D Diderot, Univ P&M Curie, CNRS UMR 8551, Ecole Normale Super,Lab Pierre Aigrain, F-75231 Paris 05, France

[2] Univ Leeds, Sch Elect & Elect Engn, Leeds LS9 2JT, W Yorkshire, England

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 19期

基金：

英国工程与自然科学研究理事会; 欧洲研究理事会;

关键词：

QUANTUM CASCADE LASERS; COHERENT CONTROL; DYNAMICS; SPECTROSCOPY;

D O I：

10.1364/OE.20.020855

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel scheme to achieve mode-locking of a multimode laser is demonstrated. Traditional methods to produce ultrashort laser pulses are based on modulating the cavity gain or losses at the cavity roundtrip frequency, favoring the pulsed emission. Here, we rather directly act on the phases of the modes, resulting in constructive interference for the appropriated phase relationship. This was performed on a terahertz quantum cascade laser by multimode injection seeding with an external terahertz pulse, resulting in phase mode-locked terahertz laser pulses of 9ps duration, characterized unambiguously in the time domain. (C) 2012 Optical Society of America

引用

页码：20855 / 20862

页数：8

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