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Quantum beats of excitons in Zn1−xCdxSe/ZnSe multiple quantum well structures (1995)

Weckendrup, D. ; Saschek, M. ; Neukirch, U. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 77 (1995), S. 4145-4147

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We investigate the coherent dynamics of excitons in Zn1−xCdxSe/ZnSe multiple quantum wells by means of spectrally integrated and spectrally resolved transient four-wave mixing. When simultaneously exciting the heavy- and light-hole exciton resonance, a beating of the spectrally integrated four-wave mixing signal is observed. The measured beating period does not exactly correspond to the energetic split of the involved free-exciton resonances. By including a bound-exciton state in the calculation of the four-wave mixing signal, quite a reasonable fit can be achieved yielding the dephasing times of the excitonic transitions. The spectrally resolved signal allows to determine the origin of the oscillation as a quantum beat between the light- and heavy-hole exciton. © 1995 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.359505

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