ENHANCED RADIATIVE RECOMBINATION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS

被引：5
|
作者：
DEVEAUD, B
CLEROT, F
ROY, N
SERMAGE, B
KATZER, DS
机构：
[1] CTR NATL ETUD TELECOMMUN,F-92120 BAGNEUX,FRANCE
[2] USN,RES LAB,WASHINGTON,DC 20375
来源：
SURFACE SCIENCE | 1992年 / 263卷 / 1-3期
关键词：
D O I：
10.1016/0039-6028(92)90395-M
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Radiative properties of free excitons in a single GaAs quantum well are studied under resonant excitation. Superradiant decay of the excitons is evidenced by the very short lifetime as well as by the strong intensity of the signal. Dephasing mechanisms, by destroying the phase coherence of the excitons, increase the observed lifetime. Quantitative agreement between the lifetime, the intensity and the homogeneous broadening is obtained. We deduce a radiative lifetime of 8 ps in the absence of dephasing mechanisms.
引用
收藏
页码：491 / 495
页数：5
相关论文
共 50 条
  • [1] ENHANCED RADIATIVE RECOMBINATION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS
    DEVEAUD, B
    CLEROT, F
    ROY, N
    SATZKE, K
    SERMAGE, B
    KATZER, DS
    [J]. PHYSICAL REVIEW LETTERS, 1991, 67 (17) : 2355 - 2358
  • [2] RADIATIVE RECOMBINATION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS
    SERMAGE, B
    DEVEAUD, B
    SATZKE, K
    CLEROT, F
    DUMAS, C
    ROY, N
    KATZER, DS
    MOLLOT, F
    PLANEL, R
    BERZ, M
    OUDAR, JL
    [J]. SUPERLATTICES AND MICROSTRUCTURES, 1993, 13 (02) : 271 - 273
  • [3] RADIATIVE LIFETIME OF FREE-EXCITONS IN QUANTUM-WELLS
    ANDREANI, LC
    TASSONE, F
    BASSANI, F
    [J]. SOLID STATE COMMUNICATIONS, 1991, 77 (09) : 641 - 645
  • [4] INTRINSIC LINEWIDTHS AND RADIATIVE LIFETIMES OF FREE-EXCITONS IN GAAS QUANTUM-WELLS
    SRINIVAS, V
    HRYNIEWICZ, J
    CHEN, YJ
    WOOD, CEC
    [J]. PHYSICAL REVIEW B, 1992, 46 (16): : 10193 - 10196
  • [5] ENHANCED AND INHIBITED SPONTANEOUS EMISSION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS IN A MICROCAVITY
    YAMAMOTO, Y
    MACHIDA, S
    HORIKOSHI, Y
    IGETA, K
    BJORK, G
    [J]. OPTICS COMMUNICATIONS, 1991, 80 (5-6) : 337 - 342
  • [6] PHASE COHERENCE AND LINE BROADENING OF FREE-EXCITONS IN GAAS QUANTUM-WELLS
    SCHULTHEIS, L
    HONOLD, A
    KUHL, J
    KOHLER, K
    TU, CW
    [J]. SUPERLATTICES AND MICROSTRUCTURES, 1986, 2 (05) : 441 - 443
  • [7] ENHANCED AND INHIBITED SPONTANEOUS EMISSION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS IN A MICRO-CAVITY
    YAMAMOTO, Y
    MACHIDA, S
    IGETA, K
    HORIKOSHI, Y
    [J]. COHERENCE AND QUANTUM OPTICS VI, 1989, : 1249 - 1257
  • [8] DIRECT COUPLING OF HEAVY-HOLE FREE-EXCITONS IN INXGA1-XAS/GAAS QUANTUM-WELLS WITH FREE-EXCITONS IN THE GAAS BARRIER
    REYNOLDS, DC
    EVANS, KR
    BAJAJ, KK
    JOGAI, B
    STUTZ, CE
    YU, PW
    [J]. PHYSICAL REVIEW B, 1991, 43 (02): : 1871 - 1874
  • [9] LINEWIDTH OF FREE-EXCITONS IN QUANTUM-WELLS - CONTRIBUTION BY ALLOY DISORDER SCATTERING
    BASU, PK
    [J]. APPLIED PHYSICS LETTERS, 1990, 56 (12) : 1110 - 1112
  • [10] LIFETIME OF EXCITONS IN GAAS QUANTUM-WELLS
    SERMAGE, B
    LONG, S
    DEVEAUD, B
    KATZER, DS
    [J]. JOURNAL DE PHYSIQUE IV, 1993, 3 (C5): : 19 - 25
12345