Linear and nonlinear optical properties of realistic quantum-wire structures: The dominant role of Coulomb correlation

被引:79
作者
Rossi, F
Molinari, E
机构
[1] UNIV MODENA,DIPARTIMENTO FIS,I-41100 MODENA,ITALY
[2] UNIV MARBURG,FACHBEREICH PHYS,D-35032 MARBURG,GERMANY
[3] UNIV MARBURG,ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY
来源
PHYSICAL REVIEW B | 1996年 / 53卷 / 24期
关键词
D O I
10.1103/PhysRevB.53.16462
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A systematic analysis of the linear and nonlinear optical properties of realistic quantum wires is presented. The proposed theoretical approach, based on a set of generalized semiconductor Bloch equations, provides a full three-dimensional multisubband description of carrier-carrier correlation for any profile of the confinement potential, thus allowing a direct comparison with experiments on available structures, In agreement with previous investigations based on simplified one-dimensional models, our analysis shows that. also for realistic quantum-wire structures, electron-hole Coulomb correlation completely removes the one-dimensional bandedge singularities from the linear-absorption spectra. Moreover. we find that this effect is present also at high densities (corresponding to gain regimes) and contributes significantly in suppressing the ideal sharp features of the free-carrier density of states. The multisubband nature of available state-of-the-art structures is found to play a dominant role in determining the overall spectral shape in the whale density range.
引用
收藏
页码:16462 / 16473
页数:12
相关论文
共 29 条
[1]  
BASSANI F, 1995, NUOVO CIMENTO D, V17
[2]  
BASTARD G, 1993, J PHYS IV, V3, P5
[3]   INFLUENCE OF EXTERNAL ELECTRIC AND MAGNETIC-FIELDS ON THE EXCITONIC ABSORPTION-SPECTRA OF QUANTUM-WELL WIRES [J].
BENNER, S ;
HAUG, H .
PHYSICAL REVIEW B, 1993, 47 (23) :15750-15754
[4]   COHERENT INTRABAND AND INTERBAND DYNAMICS IN DOUBLE-QUANTUM WELLS - EXCITON AND FREE-CARRIER EFFECTS [J].
BINDER, E ;
KUHN, T ;
MAHLER, G .
PHYSICAL REVIEW B, 1994, 50 (24) :18319-18329
[5]   INTERBAND ABSORPTION IN QUANTUM WIRES .1. ZERO-MAGNETIC-FIELD CASE [J].
BOCKELMANN, U ;
BASTARD, G .
PHYSICAL REVIEW B, 1992, 45 (04) :1688-1699
[6]   ELECTRONIC STATES AND OPTICAL-TRANSITIONS IN LOW-DIMENSIONAL SEMICONDUCTORS [J].
CINGOLANI, R ;
RINALDI, R .
RIVISTA DEL NUOVO CIMENTO, 1993, 16 (09) :1-85
[7]   FREQUENCY AND DENSITY DEPENDENT RADIATIVE RECOMBINATION PROCESSES IN III-V SEMICONDUCTOR QUANTUM-WELLS AND SUPERLATTICES [J].
CINGOLANI, R ;
PLOOG, K .
ADVANCES IN PHYSICS, 1991, 40 (05) :535-623
[8]   BAND-GAP RENORMALIZATION IN QUANTUM WIRES [J].
CINGOLANI, R ;
RINALDI, R ;
FERRARA, M ;
LAROCCA, GC ;
LAGE, H ;
HEITMANN, D ;
PLOOG, K .
PHYSICAL REVIEW B, 1993, 48 (19) :14331-14337
[9]   THEORY OF GAIN IN QUANTUM-WIRE LASERS GROWN IN V-GROOVES [J].
CITRIN, DS ;
CHANG, YC .
IEEE JOURNAL OF QUANTUM ELECTRONICS, 1993, 29 (01) :97-108
[10]   X-RAY-DIFFRACTION RECIPROCAL SPACE MAPPING OF A GAAS SURFACE GRATING [J].
GAILHANOU, M ;
BAUMBACH, T ;
MARTI, U ;
SILVA, PC ;
REINHART, FK ;
ILEGEMS, M .
APPLIED PHYSICS LETTERS, 1993, 62 (14) :1623-1625