Low-threshold 7.3 μm quantum cascade lasers grown by gas-source molecular beam epitaxy

被引：29

作者：

Slivken, S ^{[1
]}

Matlis, A ^{[1
]}

Rybaltowski, A ^{[1
]}

Wu, Z ^{[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 / 19期

关键词：

D O I：

10.1063/1.124005

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report low- threshold 7.3 mu m superlattice-based quantum cascade lasers. The threshold current density is 3.4 kA/cm(2) at 300 K and 1.25 kA/cm(2) at 79 K in pulsed mode for narrow (similar to 20 mu m), 2-mm-long laser diodes. The characteristic temperature (T-0) is 210 K. The slope efficiencies are 153 and 650 mW/A at 300 and 100 K, respectively. Power output is in excess of 100 mW at 300 K. Laser far-field intensity measurements give divergence angles of 64 degrees and 29 degrees in the growth direction and in the plane of the quantum wells, respectively. Far-field simulations show excellent agreement with the measured results. (C) 1999 American Institute of Physics. [S0003-6951(99)01319-4].

引用

页码：2758 / 2760

页数：3

共 6 条

[1]

CHUANG SL, 1995, PHYSICS SEMICONDUCTO

[2] INFRARED-SPECTROSCOPY AND TRANSPORT OF ELECTRONS IN SEMICONDUCTOR SUPERLATTICES [J].

HELM, M .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1995, 10 (05) :557-575

[3]

KAZARINOV RF, 1971, SOV PHYS SEMICOND+, V5, P707

[4] High-temperature continuous-wave operation of λ∼8 μm quantum cascade lasers [J].

Slivken, S ;

Matlis, A ;

Jelen, C ;

Rybaltowski, A ;

Diaz, J ;

Razeghi, M .

APPLIED PHYSICS LETTERS, 1999, 74 (02) :173-175

[5]

SLIVKEN S, 1997, LEOS NEWSLETTER, V11, P9

[6] High performance interminiband quantum cascade lasers with graded superlattices [J].

Tredicucci, A ;

Capasso, F ;

Gmachl, C ;

Sivco, DL ;

Hutchinson, AL ;

Cho, AY .

APPLIED PHYSICS LETTERS, 1998, 73 (15) :2101-2103

← 1 →