Asymmetric 1D and 2D tunneling induced grating in Quantum Dot system

• Published in: Optics and laser technology 2024-05, Vol.172, p.110484, Article 110484
• Main Authors: Abbas, Muqaddar, Toheed, Kashaf, Liu, Wenzhang, Khadija, Zhang, Yong-Chang, Zhang, Pei
• Format: Article
• Language: English
• Subjects: Asymmetric grating; Tunneling induced grating; Tunneling induced transparency
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2023.110484

We propose a tunneling-induced grating based on the phenomenon of tunneling-induced transparency. Our method allows us to alternate between zeroth-order diffraction along with completely different higher-order diffraction patterns. This is accomplished by using four laser beams to drive quantum dots via a planar configuration. Specifically, we modulate a standing waves controlling beam which propagates orthogonal with the planar medium, while weaker planar probing beam, generated signal field, and pumping field are applied adjacent towards the medium. We quantitatively analyzed the dynamics for the phase, amplitude modulations, along with probing fields diffraction strengths of various ordering. By altering the relative phase of fields, we expect asymmetric 1D and 2D tunneling induced grating in quantum dot system. Our suggested approach has significant uses in optical memory systems, notably in the storing of information to diffraction orders via tunneling-induced grating. •We aim to generate a tunneling-induced grating by utilizing the interaction of a quantum dot system with various electromagnetic fields such a probe beam, a fourth generated beam through four-wave mixing, a pump field, and a standing wave control beam.•By altering the relative phase of fields, we expect asymmetric 1D and 2D tunneling induced grating in quantum dot system.•Our suggested tunneling induced grating model has an assortment of benefits over earlier electromagnetically induced grating schemes. i.e., I. It enables the probe beam to be amplified and diffracted into several higher-order directions. II. It is possible for the diffracted beam’s intensity to surpass that of the non-diffracted zeroth order. III. Due to easily controllable size, energy level spacing and large electric dipole quantum dots are best candidates for analyzing the tunneling induced grating and storing information to diffraction orders.