Project supported by the National Natural Science Foundation of China(Grant Nos 10304001, 10334010, 10521002, 10434020, 10328407 and 90501007).
Optical responses in dilute composites are controlled through the local dielectric resonance of metallic clusters. We consider two located metallic clusters close to each other with admittances ε1 and ε2. Through va...
Project supported by the National Natural Science Foundation of China (Grant No 10334010).
A simple three-level system is proposed to produce high index of refraction with zero absorption in an Er^3+-doped yttrium aluminium garnet (YAG) crystal, which is achieved for a probe field between the excited sta...