Quantum cascade lasers with low-loss chalcogenide lateral waveguides

被引：22

作者：

Gmachl, C ^{[1
]}

Hwang, HY ^{[1
]}

Paiella, R ^{[1
]}

Sivco, DL ^{[1
]}

Baillargeon, JN ^{[1
]}

Capasso, F ^{[1
]}

Cho, AY ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 03期

关键词：

chalcogenide glass; mid-infrared; pulsed laser ablation; unipolar semiconductor laser; waveguides;

D O I：

10.1109/68.914314

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：

Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings. Several-micrometer-thick Ge0.25Se0.76 glass has been deposited by pulsed laser ablation onto the sidewalls of narrow, deep etched laser ridges. Due to the intrinsically low mid-infrared attenuation of the chalcogenide material, the waveguide loss of the lasers is significantly reduced, by up to similar to 50%, depending on the ridge width, when compared to conventional ridge waveguides, This resulted in an improved overall laser performance, such as a reduction of the threshold current density, an increase in slope efficiency, and an improved temperature performance.

引用

收藏

页码：182 / 184

页数：3

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