High-temperature continuous-wave operation of λ∼8 μm quantum cascade lasers

被引：19

作者：

Slivken, S ^{[1
]}

Matlis, A ^{[1
]}

Jelen, C ^{[1
]}

Rybaltowski, A ^{[1
]}

Diaz, J ^{[1
]}

Razeghi, M ^{[1
]}

机构：

[1] Northwestern Univ, Ctr Quantum Devices, Dept Elect & Comp Engn, Evanston, IL 60208 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 02期

关键词：

D O I：

10.1063/1.123284

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report single-mode continuous-wave operation of a lambda similar to 8 mu m quantum cascade laser at 140 K. The threshold current density is 4.2 kA/cm(2) at 300 K in pulsed mode and 2.5 kA/cm(2) at 140 K in continuous wave for 2 mm long index-guided laser cavities of 20 mu m width. Wide stripe (W similar to 100 mu m), index-guided lasers from the same wafer in pulsed operation demonstrate an average T-0 of 210 K with other wafers demonstrating a T-0 as high as 290 K for temperatures from 80 to 300 K. This improvement in high-temperature performance is a direct result of three factors: excellent material quality, a low-loss waveguide design, and a low-leakage index-guided laser geometry. (C) 1999 American Institute of Physics. [S0003-6951(99)05402-9].

引用

页码：173 / 175

页数：3

共 4 条

[1] QUANTUM CASCADE LASER [J].

FAIST, J ;

CAPASSO, F ;

SIVCO, DL ;

SIRTORI, C ;

HUTCHINSON, AL ;

CHO, AY .

SCIENCE, 1994, 264 (5158) :553-556

[2] High-power ℷ≈8 μm quantum cascade lasers with near optimum performance [J].

Gmachl, C ;

Tredicucci, A ;

Capasso, F ;

Hutchinson, AL ;

Sivco, DL ;

Baillargeon, JN ;

Cho, AY .

APPLIED PHYSICS LETTERS, 1998, 72 (24) :3130-3132

[3] Gas-source molecular beam epitaxy growth of an 8.5 mu m quantum cascade laser [J].

Slivken, S ;

Jelen, C ;

Rybaltowski, A ;

Diaz, J ;

Razeghi, M .

APPLIED PHYSICS LETTERS, 1997, 71 (18) :2593-2595

[4]

SLIVKEN S, 1997, IEEE LASERS ELECTROO, V11, P9

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