Dopant migration effects in terahertz quantum cascade lasers

被引：29

作者：

Deutsch, C. ^{[1
,2
]}

Detz, H. ^{[2
,3
]}

Krall, M. ^{[1
,2
]}

Brandstetter, M. ^{[1
,2
]}

Zederbauer, T. ^{[2
,3
]}

Andrews, A. M. ^{[2
,3
]}

Schrenk, W. ^{[2
,3
]}

Strasser, G. ^{[2
,3
]}

Unterrainer, K. ^{[1
,2
]}

机构：

[1] Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria

[2] Vienna Univ Technol, Ctr Micro & Nanostruct, A-1040 Vienna, Austria

[3] Vienna Univ Technol, Inst Solid State Elect, A-1040 Vienna, Austria

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 20期

基金：

奥地利科学基金会;

关键词：

SCATTERING; WELLS; GAAS; SI; IMPURITIES; INTERFACE; LINEWIDTH; INJECTOR;

D O I：

10.1063/1.4805040

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that dopant migration and the resulting impurity scattering can strongly influence the performance of GaAs/Al0.15Ga0.85As terahertz quantum cascade lasers. A nominally symmetric structure allows us to compare the negative and positive bias behavior of the very same device. Dopants, migrated towards the upper laser level during sample growth, degrade the lasing performance due to enhanced impurity scattering rates. The consequences are a higher threshold current (+30%) and reduced optical output power (-29%) in the affected operating direction. This polarity dependent performance is reversed in an asymmetrically doped sample, which imitates the migration of dopants against the growth direction. (C) 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

引用

页数：4

共 22 条

[1] Doping in quantum cascade lasers. I. InAlAs-InGaAs/InP midinfrared devices [J].

Aellen, Thierry ;

Beck, Mattias ;

Hoyler, Nicolas ;

Giovannini, Marcella ;

Faist, Jerome ;

Gini, Emilio .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (04)

[2] Influence of doping on the performance of terahertz quantum-cascade lasers [J].

Benz, A. ;

Fasching, G. ;

Andrews, A. M. ;

Martl, M. ;

Unterrainer, K. ;

Roch, T. ;

Schrenk, W. ;

Golka, S. ;

Strasser, G. .

APPLIED PHYSICS LETTERS, 2007, 90 (10)

[3] Importance of electron-impurity scattering for electron transport in terahertz quantum-cascade lasers [J].

Callebaut, H ;

Kumar, S ;

Williams, BS ;

Hu, Q ;

Reno, JL .

APPLIED PHYSICS LETTERS, 2004, 84 (05) :645-647

[4] Limiting Factors to the Temperature Performance of THz Quantum Cascade Lasers Based on the Resonant-Phonon Depopulation Scheme [J].

Chassagneux, Y. ;

Wang, Q. J. ;

Khanna, S. P. ;

Strupiechonski, E. ;

Coudevylle, J. -R. ;

Linfield, E. H. ;

Davies, A. G. ;

Capasso, F. ;

Belkin, M. A. ;

Colombelli, R. .

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2012, 2 (01) :83-92

[5] High performance InGaAs/GaAsSb terahertz quantum cascade lasers operating up to 142 K [J].

Deutsch, C. ;

Krall, M. ;

Brandstetter, M. ;

Detz, H. ;

Andrews, A. M. ;

Klang, P. ;

Schrenk, W. ;

Strasser, G. ;

Unterrainer, K. .

APPLIED PHYSICS LETTERS, 2012, 101 (21)

[6] Probing scattering mechanisms with symmetric quantum cascade lasers [J].

Deutsch, Christoph ;

Detz, Hermann ;

Zederbauer, Tobias ;

Andrews, Aaron M. ;

Klang, Pavel ;

Kubis, Tillmann ;

Klimeck, Gerhard ;

Schuster, Manfred E. ;

Schrenk, Werner ;

Strasser, Gottfried ;

Unterrainer, Karl .

OPTICS EXPRESS, 2013, 21 (06) :7209-7215

[7] INFLUENCE OF IONIZED IMPURITIES ON THE LINEWIDTH OF INTERSUBBAND TRANSITIONS IN GAAS/GAALAS QUANTUM-WELLS [J].

DUPONT, EB ;

DELACOURT, D ;

PAPILLON, D ;

SCHNELL, JP ;

PAPUCHON, M .

APPLIED PHYSICS LETTERS, 1992, 60 (17) :2121-2122

[8] Thermoelectric Effect in Quantum Cascade Lasers [J].

Escarra, Matthew D. ;

Benz, Alexander ;

Bhatt, Anjali M. ;

Hoffman, Anthony J. ;

Wang, Xiaojun ;

Fan, Jen-Yu ;

Gmachl, Claire .

IEEE PHOTONICS JOURNAL, 2010, 2 (03) :500-509

[9] NARROWING OF THE INTERSUBBAND ELECTROLUMINESCENT SPECTRUM IN COUPLED-QUANTUM-WELL HETEROSTRUCTURES [J].

FAIST, J ;

CAPASSO, F ;

SIRTORI, C ;

SIVCO, DL ;

HUTCHINSON, AL ;

CHU, SNG ;

CHO, AY .

APPLIED PHYSICS LETTERS, 1994, 65 (01) :94-96

[10] QUANTUM CASCADE LASER [J].

FAIST, J ;

CAPASSO, F ;

SIVCO, DL ;

SIRTORI, C ;

HUTCHINSON, AL ;

CHO, AY .

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

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