Optical mode control of surface-plasmon quantum cascade lasers

被引：0
|
作者：
Moreau, V. [1 ]
Bahriz, M. [1 ]
Palomo, J. [1 ]
Wilson, L. R. [1 ]
Krysa, A. B. [1 ]
Sirtori, C. [1 ]
Austin, D. A. [1 ]
Cockburn, J. W. [1 ]
Roberts, J. S. [1 ]
Colombelli, R. [1 ]
机构：
[1] Univ Paris 11, CNRS, UMR 8622, Inst Elect Fondamentale, F-91405 Orsay, France
来源：
PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷
基金：
英国工程与自然科学研究理事会;
关键词：
semiconductor lasers; mid-infrared; surface-plasmons;
D O I：
暂无
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：
Surface-plasmon waveguides based on metallic strips can provide a two dimensional optical confinement. This concept has been successfully applied to quantum cascade lasers, processed as ridge waveguides, to demonstrate that the lateral extension of the optical mode can be influenced solely by the width of the device top contact. For devices operating at a wavelength of lambda approximate to 7.5 mu m, the room-temperature threshold current density was reduced from 6.3 kA/cm(2) to 4.4 kA/cm(2) with respect to larger devices with full top metallization.
引用
收藏
页码：507 / +
页数：2
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