Abstract
We investigate the effect of doped ${{\rm Er}^{3 +}}$ ion concentration on an electromagnetically induced grating in an ${{\rm Er}^{3 +}}$-doped yttrium aluminum garnet (YAG) crystal. Due to the change of electric dipole moment and spontaneous emission decay induced by ${{\rm Er}^{3 +}}$ ion concentration, the Fraunhofer diffraction of the solid-state grating is sensitively dependent upon ${{\rm Er}^{3 +}}$ ion concentration. The three-level ${{\rm Er}^{3 +}}$ ion system with a closed loop leads to probe gain appearing in some concentrations of the ${{\rm Er}^{3 +}}$ ion, which significantly improves the first-order diffraction efficiency of the solid-state grating. Furthermore, it is demonstrated that the relative phase, signal detuning, and grating thickness have different effects on the first-order diffraction efficiency of the solid-state grating under different concentrations of the ${{\rm Er}^{3 +}}$ ion. Therefore, our scheme may provide a basis for selecting a suitable concentration to realize high-efficiency optical switching and routing in future integrated systems.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Tong-Zhen Chen, Zhen-Yu Shi, Le Ai, Tao Shui, and Wen-Xing Yang
J. Opt. Soc. Am. B 40(6) 1591-1598 (2023)
Tong-Zhen Chen, Yu-Qian He, Zhen-Yu Shi, Le Ai, Tao Shui, Wen-Xing Yang, and Zia uddin
Opt. Mater. Express 13(10) 2964-2978 (2023)
Azar Vafafard and Mostafa Sahrai
J. Opt. Soc. Am. B 37(2) 244-250 (2020)