EMISSION SPECTRA OF TERAHERTZ QUANTUM CASCADE LASER

被引：2

作者：

Antonov, A. V. ^{[1
]}

Gavrilenko, V. I. ^{[1
]}

Ikonnikov, A. V. ^{[1
]}

Maremyanin, K. V. ^{[1
]}

Lastovkin, A. A. ^{[1
]}

Morozov, S. V. ^{[1
]}

Ushakov, D. V. ^{[2
]}

Sadofyev, Yu. G. ^{[3
]}

Samal, N. ^{[3
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603600, Russia

[2] Belarusian State Univ, Minsk 220050, BELARUS

[3] Trion Technol, Tempe, AZ USA

来源：

RADIOPHYSICS AND QUANTUM ELECTRONICS | 2009年 / 52卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

GaAs; Optical Phonon; Laser Emission; Quantum Cascade Laser; Emission Pulse;

D O I：

10.1007/s11141-009-9156-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We calculated energy levels, wave functions, and energies of radiative transitions in terahertz quantum cascade lasers based on GaAs/Al0.15Ga0.85As heterostructures. Current-voltage characteristics and current dependences of laser radiation intensity were measured, and the maximum operating temperatures reaching 85 K were determined. Radiation spectra of quantum cascade lasers were measured for different temperatures, and the effect of intensity "pumping" from low-frequency modes to high-frequency modes was found to happen in the case of an increase in the current and time delay of the signal capture, which is explained by heating of the sample during a pulse of the current. Application of the lasers for registration of impurity photoconductivity signals in semiconductor heterostructures was demonstrated.

引用

页码：494 / 499

页数：6

共 8 条

[1] Room temperature continuous wave operation of quantum cascade lasers with watt-level optical power [J].

Bai, Y. ;

Darvish, S. R. ;

Slivken, S. ;

Zhang, W. ;

Evans, A. ;

Nguyen, J. ;

Razeghi, M. .

APPLIED PHYSICS LETTERS, 2008, 92 (10)

[2] Terahertz quantum cascade lasers with copper metal-metal waveguides operating up to 178 K [J].

Belkin, Mikhail A. ;

Fan, Jonathan A. ;

Hormoz, Sahand ;

Capasso, Federico ;

Khanna, Suraj P. ;

Lachab, Mohamed ;

Davies, A. Giles ;

Linfield, Edmund H. .

OPTICS EXPRESS, 2008, 16 (05) :3242-3248

[3] Shallow acceptors in Ge/GeSi strained multilayer heterostructures with quantum wells [J].

Gavrilenko, VI ;

Erofeeva, IV ;

Korotkov, AL ;

Krasilnik, ZF ;

Kuznetsov, OA ;

Moldavskaya, MD ;

Nikonorov, VV ;

Paramonov, LV .

JETP LETTERS, 1997, 65 (02) :209-214

[4]

USHAKOV DV, 2008, OPT SPEKTROSK, V104, P846

[5]

USHAKOV DV, 2007, J APPL SPECTROSC, V74, P801

[6] Terahertz quantum-cascade lasers [J].

Williams, Benjamin S. .

NATURE PHOTONICS, 2007, 1 (09) :517-525

[7] 3.4-THz quantum cascade laser based on longitudinal-optical-phonon scattering for depopulation [J].

Williams, BS ;

Callebaut, H ;

Kumar, S ;

Hu, Q ;

Reno, JL .

APPLIED PHYSICS LETTERS, 2003, 82 (07) :1015-1017

[8] EFFECT OF NONPARABOLICITY IN GAAS/GA1-XALX AS SEMICONDUCTOR QUANTUM WELLS [J].

YOO, KH ;

RAMMOHAN, LR ;

NELSON, DF .

PHYSICAL REVIEW B, 1989, 39 (17) :12808-12813

← 1 →