Ultrafast ellipsometry of coherent processes and exciton-exciton interactions in quantum wells at negative delays

被引:30
作者
Bolger, JA
Paul, AE
Smirl, AL
机构
[1] Laboratory for Photonics and Quantum Electronics, University of Iowa, Iowa City
来源
PHYSICAL REVIEW B | 1996年 / 54卷 / 16期
关键词
D O I
10.1103/PhysRevB.54.11666
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A combination of ellipsometric and pump-probe techniques are used to completely determine the time-averaged and time-resolved polarization state of the degenerate four-wave-mixing signal emitted from a GaAs/AlxGa1-xAs multiple quantum well following femtosecond excitation for negative time delays between the pump and probe. The polarization state of the four-wave-mixing signal is observed to exhibit a continuously varying ellipticity and a real-time rotation of the polarization ellipse at negative time delays that an dramatically and functionally different from those observed at positive delays. These distinct polarization features place stringent constraints on the physical models and are shown to be consistent with the inclusion of both many-body interactions and biexcitonic effects.
引用
收藏
页码:11666 / 11671
页数:6
相关论文
共 37 条
  • [1] EXCITON SPIN DYNAMICS IN GAAS HETEROSTRUCTURES
    BARAD, S
    BARJOSEPH, I
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (03) : 349 - 352
  • [2] POLARIZATION DEPENDENCE OF 4-WAVE-MIXING SIGNALS IN QUANTUM-WELLS
    BENNHARDT, D
    THOMAS, P
    ECCLESTON, R
    MAYER, EJ
    KUHL, J
    [J]. PHYSICAL REVIEW B, 1993, 47 (20): : 13485 - 13490
  • [3] INSTANTANEOUS FREQUENCY DYNAMICS OF COHERENT WAVE MIXING IN SEMICONDUCTOR QUANTUM-WELLS
    BIGOT, JY
    MYCEK, MA
    WEISS, S
    ULBRICH, RG
    CHEMLA, DS
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (21) : 3307 - 3310
  • [4] INFLUENCE OF EXCITON-EXCITON INTERACTIONS ON THE COHERENT OPTICAL-RESPONSE IN GAAS QUANTUM-WELLS
    BOTT, K
    HELLER, O
    BENNHARDT, D
    CUNDIFF, ST
    THOMAS, P
    MAYER, EJ
    SMITH, GO
    ECCLESTON, R
    KUHL, J
    PLOOG, K
    [J]. PHYSICAL REVIEW B, 1993, 48 (23): : 17418 - 17426
  • [5] POLARIZATION-DEPENDENT PICOSECOND EXCITONIC NONLINEARITIES AND THE COMPLEXITIES OF DISORDER
    CUNDIFF, ST
    WANG, H
    STEEL, DG
    [J]. PHYSICAL REVIEW B, 1992, 46 (11): : 7248 - 7251
  • [6] COHERENT TRANSIENT SPECTROSCOPY OF EXCITONS IN GAAS-ALGAAS QUANTUM-WELLS
    CUNDIFF, ST
    STEEL, DG
    [J]. IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (10) : 2423 - 2433
  • [7] INTENSITY DEPENDENT 4-WAVE-MIXING POLARIZATION RULES IN QUANTUM-WELLS
    ECCLESTON, R
    KUHL, J
    BENNHARDT, D
    THOMAS, P
    [J]. SOLID STATE COMMUNICATIONS, 1993, 86 (02) : 93 - 97
  • [8] BIEXCITONIC CONTRIBUTION TO THE DEGENERATE-4-WAVE-MIXING SIGNAL FROM A GAAS/ALXGA1-XAS QUANTUM-WELL
    FEUERBACHER, BF
    KUHL, J
    PLOOG, K
    [J]. PHYSICAL REVIEW B, 1991, 43 (03): : 2439 - 2441
  • [9] COLLISION BROADENING OF TWO-DIMENSIONAL EXCITONS IN A GAAS SINGLE QUANTUM WELL
    HONOLD, A
    SCHULTHEIS, L
    KUHL, J
    TU, CW
    [J]. PHYSICAL REVIEW B, 1989, 40 (09): : 6442 - 6445
  • [10] HU Z, 1994, PHYS REV B, V49, P14382