AlAs/GaAs quantum cascade lasers based on large direct conduction band discontinuity

被引：46

作者：

Becker, C ^{[1
]}

Sirtori, C ^{[1
]}

Page, H ^{[1
]}

Glastre, G ^{[1
]}

Ortiz, V ^{[1
]}

Marcadet, X ^{[1
]}

Stellmacher, M ^{[1
]}

Nagle, J ^{[1
]}

机构：

[1] Thomson CSF, Cent Rech Lab, F-91404 Orsay, France

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 04期

关键词：

D O I：

10.1063/1.127059

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The design and operation of quantum cascade (QC) lasers using AlAs/GaAs coupled quantum wells are reported. In this material system, the conduction band offset at the Gamma point (similar to 1 eV) is much higher than in previously reported QC lasers. The use of high band discontinuity allows us to increase the energy separation among the subbands, thus suppressing thermally activated processes which limit device performance at high temperature. The measured thermal characteristics of these promising devices are strongly improved from previously reported GaAs-based QC lasers: The temperature dependence of the threshold current density is described by a very large T-0 (320 K) and the laser slope efficiency does not vary for increasing heat sink temperatures. The maximum operating temperature is 230 K, limited by negative differential resistance effects that occur when the applied bias reaches 8 V. (C) 2000 American Institute of Physics. [S0003-6951(00)01530-8].

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页码：463 / 465

页数：3

相关论文

共 12 条

[1] QUANTUM CASCADE LASER - TEMPERATURE-DEPENDENCE OF THE PERFORMANCE-CHARACTERISTICS AND HIGH T0 OPERATION [J].

FAIST, J ;

CAPASSO, F ;

SIVCO, DL ;

HUTCHINSON, L ;

SIRTORI, C ;

CHU, SNG ;

CHO, AY .

APPLIED PHYSICS LETTERS, 1994, 65 (23) :2901-2903

[2] High power mid-infrared (lambda greater than or similar to-5 mu m) quantum cascade lasers operating above room temperature [J].

Faist, J ;

Capasso, F ;

Sirtori, C ;

Sivco, DL ;

Baillargeon, JN ;

Hutchinson, AL ;

Chu, SNG ;

Cho, AY .

APPLIED PHYSICS LETTERS, 1996, 68 (26) :3680-3682

[3] Improved CW operation of quantum cascade lasers with epitaxial-side heat-sinking [J].

Gmachl, C ;

Sergent, AM ;

Tredicucci, A ;

Capasso, F ;

Hutchinson, AL ;

Sivco, DL ;

Baillargeon, JN ;

Chu, SNG ;

Cho, AY .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1999, 11 (11) :1369-1371

[4] DIELECTRIC CONTINUUM MODEL AND FROHLICH INTERACTION IN SUPERLATTICES [J].

HUANG, K ;

ZHU, BF .

PHYSICAL REVIEW B, 1988, 38 (18) :13377-13386

[5]

KRUCK P, IN PRESS APPL PHYS L

[6] High peak power (1.1W) (Al)GaAs quantum cascade laser omitting at 9.7μm [J].

Page, H ;

Kruck, P ;

Barbieri, S ;

Sirtori, C ;

Stellmacher, M ;

Nagle, J .

ELECTRONICS LETTERS, 1999, 35 (21) :1848-1849

[7] TRANSPORT MECHANISM OF X-BAND ELECTRONS IN ALAS ELECTRODE THROUGH GAAS/ALAS/GAAS STRUCTURE BY VARYING GAAS WELL THICKNESS [J].

SHIEH, TH ;

LEE, SC .

APPLIED PHYSICS LETTERS, 1993, 63 (24) :3350-3352

[8] Long wavelength infrared (lambda similar or equal to 11 mu m) quantum cascade lasers [J].

Sirtori, C ;

Faist, J ;

Capasso, F ;

Sivco, DL ;

Hutchinson, AL ;

Cho, AY .

APPLIED PHYSICS LETTERS, 1996, 69 (19) :2810-2812

[9] Continuous wave operation of midinfrared (7.4-8.6 mu m) quantum cascade lasers up to 110 K temperature [J].

Sirtori, C ;

Faist, J ;

Capasso, F ;

Sivco, DL ;

Hutchinson, AL ;

Chu, SNG ;

Cho, AY .

APPLIED PHYSICS LETTERS, 1996, 68 (13) :1745-1747

[10] NONPARABOLICITY AND A SUM-RULE ASSOCIATED WITH BOUND-TO-BOUND AND BOUND-TO-CONTINUUM INTERSUBBAND TRANSITIONS IN QUANTUM-WELLS [J].

SIRTORI, C ;

CAPASSO, F ;

FAIST, J ;

SCANDOLO, S .

PHYSICAL REVIEW B, 1994, 50 (12) :8663-8674