Terahertz quantum-cascade laser operating up to 137 K

被引：129

作者：

Williams, BS ^{[1
]}

Kumar, S

Callebaut, H

Hu, Q

Reno, JL

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[3] Sandia Natl Labs, Dept 1123, Albuquerque, NM 87185 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 25期

关键词：

D O I：

10.1063/1.1635657

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report operation of a terahertz quantum-cascade laser at 3.8 THz (lambdaapproximate to79 mum) up to a heat-sink temperature of 137 K. A resonant phonon depopulation design was used with a low-loss metal-metal waveguide, which provided a confinement factor of nearly unity. A threshold current density of 625 A/cm(2) was obtained in pulsed mode at 5 K. Devices fabricated using a conventional semi-insulating surface-plasmon waveguide lased up to 92 K with a threshold current density of 670 A/cm(2) at 5 K. (C) 2003 American Institute of Physics.

引用

页码：5142 / 5144

页数：3

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