Single site optical spectroscopy of coupled Er<sup>3+</sup> ion pairs in silicon
Single site optical spectroscopy of coupled Er<sup>3+</sup> ion pairs in silicon
We make the first study the optical energy level structure and interactions of pairs of single rare earth ions using a hybrid electro-optical detection method applied to Er-implanted silicon. Two examples of Er3+ pairs were identified in the optical spectrum by their characteristic energy level splitting patterns, and linear Zeeman …