Programme

P.84 -- Poster, VCTP-45

Date: Wednesday, 14 October 2020

Time: 08:30 - 10:00

Online presentation

The optical Stark effect of excitons in InGaAs/InAlAs prolate ellipsoidal quantum dots

Le Thi Ngoc Bao (2), Duong Dinh Phuoc (1), Le Thi Dieu Hien (1,2), Dinh Nhu Thao (1*)

(1) Hue University of Education, Hue University, 34 Le Loi Street, Hue City, Vietnam (2) Hue University of Sciences, Hue University, 77 Nguyen Hue Street, Hue City, Vietnam

Abstract. In this paper, we study the optical Stark effect of excitons in InGaAs/InAlAs prolate ellipsoidal quantum dots using the renormalization wavefunction formulation. Our results show that the absorption spectrum appears two absorption peaks of excitons when there is a strong laser coupling of two-electron quantized levels. This provides clear evidence of the existence of the three-level optical Stark effect in this quantum structure. Besides, the dependence of the exciton absorption spectrum on the pump laser detuning, photon energy, size, and geometry of quantum dots were also investigated and explained in detail.

Presenter: Le Thi Ngoc Bao

Presentation file: