National Natural Science Foundation of China [11675124, 12105210]; Research Project of Wuhan Polytechnic University [2021Y36]
机构署名：
本校为第一机构
院系归属：
电气与电子工程学院
摘要：
A new theoretical scheme for two-dimensional (2D) electromagnetically induced grating (EIG) is proposed in a three-level $\Xi$-type atomic system. The system is driven by a weak probe field and two position-dependent coupling fields--a 2D standing-wave field and a vortex field. Due to lopsided spatial modulation of the vortex Laguerre-Gaussian field, the weak probe light could be diffracted into different domains and asymmetric 2D EIG is formed. The result shows that the diffraction patterns and efficiency could be effectively modulated by the azimuthal parameter of the vortex field. Also, the...
