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Journal of Luminescence

Impact of intense laser Bessel beam on excitonic complexes in ellipsoidal quantum dot

Yuri Y. Bleyan, T.A. Sargsian, A. A. Kostanyan, D.B. Hayrapetyan, Paytsar A. Mantashyan

Published Aug 1, 2023• 8 citations
Publisher
DOI
10.1016/j.jlumin.2023.120101

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In this paper, we study the exciton absorption spectra in InGaAs prolate ellipsoidal quantum dots when a strong pump laser resonant with electron quantized levels is active. Our obtained results by renormalized wavefunction theory show that, under suitable conditions, the initial exciton absorption peak is split into two new peaks as the evidence of the existence of the three-level optical Stark effect of excitons. We have suggested an explanation of the origin of the effect as well as investigating the effect of pump field energy, size, and geometric shape of the quantum dots on effect characteristics. The comparison with the results obtained in the spherical quantum dots implies the important role of geometric shape of the quantum structures when we examine this effect.