Wideband chaos from a laser diode with phase-conjugate feedback

被引：29

作者：

Bouchez, Guillaume ^{[1
,2
,3
]}

Uy, Chi-Hak ^{[1
,2
,3
]}

Macias, Brice ^{[1
,2
,3
]}

Wolfersberger, Delphine ^{[1
,2
,3
]}

Sciamanna, Marc ^{[1
,2
,3
]}

机构：

[1] Cent Supelec, LMOPS EA 4423 Lab, Chair Photon, 2 Rue Edouard Belin, F-57070 Metz, France

[2] Univ Paris Saclay, 2 Rue Edouard Belin, F-57070 Metz, France

[3] Univ Lorraine, 2 Rue Edouard Belin, F-57070 Metz, France

来源：

OPTICS LETTERS | 2019年 / 44卷 / 04期

关键词：

RANDOM BIT GENERATION; BANDWIDTH-ENHANCED CHAOS; SEMICONDUCTOR-LASER; IRREGULAR FLUCTUATIONS; OPTICAL FEEDBACK; SUBJECT; DYNAMICS;

D O I：

10.1364/OL.44.000975

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze experimentally and theoretically the chaotic dynamics generated by a laser diode subjected to phase-conjugate feedback. Phase conjugation is obtained from four-wave mixing in a BaTiO3 photorefractive crystal. We demonstrate that the chaos bandwidth first increases linearly with feedback ratio but then saturates to relatively high values. With a single optical feedback, a chaos bandwidth up to about 18 GHz is achieved, which is about five times as large as the free-running laser diode relaxation oscillation frequency. Numerical simulations confirm our experimental observations and unveil that the finite depth penetration into the crystal is responsible for the observed saturation. (C) 2019 Optical Society of America

引用

页码：975 / 978

页数：4

共 28 条

[1] Super-harmonic self-pulsations from a time-delayed phase-conjugate optical system [J].