具有超低脉冲能量的高非线性硫族化物光子纳米线中的孤子自压缩

Soliton-self compression in highly nonlinear chalcogenide photonic nanowires with ultralow pulse energy.

作者信息

Ben Salem Amine, Cherif Rim, Zghal Mourad

机构信息

University of Carthage, Engineering School of Communication of Tunis (Sup’Com), Cirta’Com Laboratory, Ghazala Technopark, 2083 Ariana, Tunisia.

出版信息

Opt Express. 2011 Oct 10;19(21):19955-66. doi: 10.1364/OE.19.019955.

DOI:10.1364/OE.19.019955

PMID:21997005

Abstract

We design As2Se3 and As2S3 chalcogenide photonic nanowires to optimize the soliton self-compression with short distances and ultralow input pulse energy. We numerically demonstrate the generation of single optical cycle in an As2S3 photonic nanowire: a 5.07 fs compressed pulse is obtained starting from 250 fs input pulse with 50 pJ in 0.84 mm-long As2S3 nanowire. Taking into account the high two photon absorption (TPA) coefficient in the As2Se3 glass, accurate modeling shows the compression of 250 fs down to 25.4 fs in 2.1 mm-long nanowire and with 10 pJ input pulse energy.

摘要

我们设计了As2Se3和As2S3硫族化物光子纳米线，以在短距离和超低输入脉冲能量下优化孤子自压缩。我们通过数值模拟证明了在As2S3光子纳米线中产生单个光学周期：在0.84毫米长的As2S3纳米线中，从250飞秒、50皮焦的输入脉冲开始，获得了5.07飞秒的压缩脉冲。考虑到As2Se3玻璃中较高的双光子吸收（TPA）系数，精确建模显示，在2.1毫米长的纳米线中，输入脉冲能量为10皮焦时，250飞秒的脉冲可压缩至25.4飞秒。