Continuous-wave operation of terahertz quantum-cascade lasers above liquid-nitrogen temperature

被引：171

作者：

Kumar, S ^{[1
]}

Williams, BS

Kohen, S

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 | 2004年 / 84卷 / 14期

关键词：

D O I：

10.1063/1.1695099

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report cw operation of a quantum-cascade laser at 3.2 THz (lambdaapproximate to94 mum) up to a heat-sink temperature of 93 K. Resonant longitudinal-optical phonon scattering is used to depopulate the lower radiative state and a low-loss metal-metal waveguide is used to provide high modal confinement. Optical powers of similar to1.8 mW at 10 K and similar to400 muW at 78 K are observed from a single facet of a 40-mum-wide and 1.35-mm-long laser device. A threshold current density of 432 A/cm(2) at 10 K and 552 A/cm(2) at 78 K was obtained in cw mode. The same device lased up to 129 K in pulsed mode with a threshold current density of 419 A/cm(2) at 5 K. (C) 2004 American Institute of Physics.

引用

页码：2494 / 2496

页数：3

共 13 条

[1]

Blakemore J. S., 1982, J APPL PHYS, V52, p123(R)

[2] Analysis of transport properties of tetrahertz quantum cascade lasers [J].

Callebaut, H ;

Kumar, S ;

Williams, BS ;

Hu, Q ;

Reno, JL .

APPLIED PHYSICS LETTERS, 2003, 83 (02) :207-209

[3]

CHAND M, COMMUNICATION

[4]

Faist J., COMMUNICATION

[5] High-performance continuous-wave operation of superlattice terahertz quantum-cascade lasers [J].

Köhler, R ;

Tredicucci, A ;

Beltram, F ;

Beere, HE ;

Linfield, EH ;

Davies, AG ;

Ritchie, DA ;

Dhillon, SS ;

Sirtori, C .

APPLIED PHYSICS LETTERS, 2003, 82 (10) :1518-1520

[6] Terahertz semiconductor-heterostructure laser [J].

Köhler, R ;

Tredicucci, A ;

Beltram, F ;

Beere, HE ;

Linfield, EH ;

Davies, AG ;

Ritchie, DA ;

Iotti, RC ;

Rossi, F .

NATURE, 2002, 417 (6885) :156-159

[7] Low-threshold terahertz quantum-cascade lasers [J].

Rochat, M ;

Ajili, L ;

Willenberg, H ;

Faist, J ;

Beere, H ;

Davies, G ;

Linfield, E ;

Ritchie, D .

APPLIED PHYSICS LETTERS, 2002, 81 (08) :1381-1383

[8] Far-infrared (λ ≃ 87 μm) bound-to-continuum quantum-cascade lasers operating up to 90 K [J].

Scalari, G ;

Ajili, L ;

Faist, J ;

Beere, H ;

Linfield, E ;

Ritchie, D ;

Davies, G .

APPLIED PHYSICS LETTERS, 2003, 82 (19) :3165-3167

[9] Resonant tunneling in quantum cascade lasers [J].

Sirtori, C ;

Capasso, F ;

Faist, J ;

Hutchinson, AL ;

Sivco, DL ;

Cho, AY .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1998, 34 (09) :1722-1729

[10] Terahertz quantum-cascade laser operating up to 137 K [J].

Williams, BS ;

Kumar, S ;

Callebaut, H ;

Hu, Q ;

Reno, JL .

APPLIED PHYSICS LETTERS, 2003, 83 (25) :5142-5144

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