Coherent formation of biexcitons in ZnSe/ZnSSe quantum wells by four-wave mixing

Kuroda, Takashi; Inoue, Kuon; Kuribayashi, R.; Minami, F.; Mysyrowicz, A.; Suemune, I.

doi:10.1016/0022-2313(95)00184-0

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…1-4 Since a biexciton can be directly excited by two-photon excitation, the nonlinear optical technique of degenerate four-wave mixing ͑FWM͒ provides a powerful tool to study coherent biexcitonic phenomena. [4][5][6][7] So far, these studies consider mainly the biexciton formation from two heavy-hole excitons (X h ). Biexcitons involving light-hole excitons (X l ) have been observed, 8 but no distinction between mixed and pure lighthole biexcitons has been made.…”

Section: ͓S0163-1829͑99͒01508-8͔mentioning

confidence: 99%

“…The center of the excitation spectrum was set to 2.815 eV, in order to avoid continuum contributions but simultaneously excite the first (11hX h ) and second (12h) center-of-mass quantized 1s excitons of the heavy hole, and the first of the light hole (11lX l ). 6,10 The coherent excitation of the heavy- hole (X h ) and light-hole exciton (X l ) states leads to quantum beats in the delay time-dependent FWM signal with a period of Tϭ270 fs ͑Fig. 2͒.…”

Section: ͓S0163-1829͑99͒01508-8͔mentioning

confidence: 99%

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Mixed biexcitons in single quantum wells

1999

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Section: ͓S0163-1829͑99͒01508-8͔mentioning

confidence: 99%

Section: ͓S0163-1829͑99͒01508-8͔mentioning

confidence: 99%

Mixed biexcitons in single quantum wells

1999

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“…[19][20][21][27][28][29][30][31][32] Also, the high biexciton binding energy enables the spectral discrimination of the BIF contribution. 33,34 In this paper, we report on subpicosecond FWM studies on center-of-mass ͑COM͒ quantized excitons in wide ZnSe/Zn 0.94 Mg 0.06 Se single QW's ͑SQW's͒. The use of SQW's excludes propagation effects 35 and interference effects between QW's.…”

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confidence: 99%

Interaction and dephasing of center-of-mass quantized excitons in wideZnSe/Zn0.94

et al. 1998

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. Interaction and dephasing of center-of-mass quantized excitons in wide ZnSe/Zn0.94Mg0.06Se quantum wells. Physical Review B, 57(3), 1791-1796. DOI: 10.1103/PhysRevB.57.1791 Interaction and dephasing of center-of-mass quantized excitons in wide ZnSe/Zn 0. We investigate the interaction and dephasing of the excitons in wide ZnSe/Zn 0.94 Mg 0.06 Se quantum wells by spectrally resolved, femtosecond four-wave mixing ͑FWM͒. Polarization-dependent measurements indicate that excitation-induced dephasing is the dominant FWM process. The biexcitons of the center-of-mass quantized heavy and light hole excitons are observed, showing binding energies of 3.5 meV. We determine the exciton scattering cross sections with incoherent and coherent excitons. The coherent cross section is found to be larger than the incoherent cross section, which is attributed to a stronger Pauli repulsion for coherent excitons. The exciton interaction rates with acoustic and optical phonons are deduced by their temperature dependencies. The acoustic-phonon scattering is found to be strongly reduced in the investigated wide wells due to the reduced accessible phonon wave vector. ͓S0163-1829͑98͒00803-0͔

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“…The higher biexciton binding energy in II-VI semiconductors compared to III-V semiconductors also enables a spectral isolation of the BIF process. [7][8][9][10] Using a SQW, interference between different QW's ͑Ref. 11͒ and propagation effects vertical to the sample surface, as observed in optically thick layers 12 are excluded.…”

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confidence: 99%