Nonlinear refractive index of ultrafast laser inscribed waveguides in gallium lanthanum sulphide

被引：8
|
作者：
Demetriou, Giorgos [1 ]
Hewak, Daniel W. [2 ]
Ravagli, Andrea [2 ]
Craig, Chris [2 ]
Kar, Ajoy [1 ]
机构：
[1] Heriot Watt Univ, Inst Photon & Quantum Sci, Sch Engn & Phys Sci, David Brewster Bldg, Edinburgh EH11 4AS, Midlothian, Scotland
[2] Univ Southampton, Optoelect Res Ctr, Southampton SO40 4UG, Hants, England
来源：
APPLIED OPTICS | 2017年 / 56卷 / 19期
基金：
英国工程与自然科学研究理事会;
关键词：
DIRECTIONAL-COUPLERS; FEMTOSECOND LASER; WRITTEN; INSCRIPTION; GLASS;
D O I：
10.1364/AO.56.005407
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate ultrafast all-optical switching in femtosecond laser inscribed nonlinear directional couplers in gallium lanthanum sulphide operated at 1.55 mu m. We report on the evaluation of the nonlinear refractive index of the waveguides forming the directional couplers by making use of the switching parameters. The nonlinear refractive index is reduced by the inscription process to about 4-5 times compared to bulk material. (C) 2017 Optical Society of America
引用
收藏
页码：5407 / 5411
页数：5
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