Coherent signature of differential transmission signals in semiconductors: Theory and experiment

被引：61

作者：

Bartels, G ^{[1
]}

Cho, GC ^{[1
]}

Dekorsy, T ^{[1
]}

Kurz, H ^{[1
]}

Stahl, A ^{[1
]}

Kohler, K ^{[1
]}

机构：

[1] FRAUNHOFER INST APPL SOLID STATE PHYS,D-79108 FREIBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.55.16404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transient pump-probe signals of a GaAs/AlxGa1-xAs quantum well are investigated both theoretically and experimentally for different excitation conditions. The calculations are based on a microscopic density-matrix approach taking higher-order correlations into account. We present spectrally resolved transients which provide insights into the nature of the differential transmission change. Especially the complex phase signature of heavy-hole-light-hole quantum beats in dependence of the detection energy allows for an identification of different microscopic processes in the pump-probe signal. The theoretical results are verified experimentally by comparison with the coherent and incoherent parts of the time-resolved data. We find a dominant role of the Coulomb-induced correlations up to the chi(3) relevant four-point level in the coherent signature in comparison to the Pauli blocking contributions.

引用

页码：16404 / 16413

页数：10

共 41 条

[1] Intraband dynamics at the semiconductor band edge: Shortcomings of the Bloch equation method [J].

Axt, VM ;

Bartels, G ;

Stahl, A .

PHYSICAL REVIEW LETTERS, 1996, 76 (14) :2543-2546

[2] 4-WAVE-MIXING THEORY BEYOND THE SEMICONDUCTOR BLOCH EQUATIONS [J].

AXT, VM ;

STAHL, A ;

MAYER, EJ ;

BOLIVAR, PH ;

NUSSE, S ;

PLOOG, K ;

KOHLER, K .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1995, 188 (01) :447-456

[3] A DYNAMICS-CONTROLLED TRUNCATION SCHEME FOR THE HIERARCHY OF DENSITY-MATRICES IN SEMICONDUCTOR OPTICS [J].

AXT, VM ;

STAHL, A .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1994, 93 (02) :195-204

[4] THE ROLE OF THE BIEXCITON IN A DYNAMIC DENSITY-MATRIX THEORY OF THE SEMICONDUCTOR BAND-EDGE [J].

AXT, VM ;

STAHL, A .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1994, 93 (02) :205-211

[5] Influence of a phonon bath on the hierarchy of electronic densities in an optically excited semiconductor [J].

Axt, VM ;

Victor, K ;

Stahl, A .

PHYSICAL REVIEW B, 1996, 53 (11) :7244-7258

[6] EXCITON SPIN DYNAMICS IN GAAS HETEROSTRUCTURES [J].

BARAD, S ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1992, 68 (03) :349-352

[7] ABSORPTION QUANTUM BEATS OF MAGNETOEXCITONS IN GAAS HETEROSTRUCTURES [J].

BARAD, S ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1991, 66 (19) :2491-2494

[8] CHI(5) SIGNATURE IN THE 4-WAVE-MIXING SIGNAL FROM A GAAS/AL0.3GA0.7AS SUPERLATTICE [J].

BARTELS, G ;

AXT, VM ;

VICTOR, K ;

STAHL, A ;

LEISCHING, P ;

KOHLER, K .

PHYSICAL REVIEW B, 1995, 51 (16) :11217-11220

[9] Bloch oscillations in In-Ga-As-P/In-Ga-As-P heterostructures observed with time-resolved transmission spectroscopy [J].

Cho, GC ;

Dekorsy, T ;

Bakker, HJ ;

Kurz, H ;

Kohl, A ;

Opitz, B .

PHYSICAL REVIEW B, 1996, 54 (07) :4420-4423

[10] Quantum coherence of continuum states in the valence band of GaAs quantum wells [J].

Dekorsy, T ;

Kim, AMT ;

Cho, GC ;

Hunsche, S ;

Bakker, HJ ;

Kurz, H ;

Chuang, SL ;

Kohler, K .

PHYSICAL REVIEW LETTERS, 1996, 77 (14) :3045-3048

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