Improving the up-conversion luminescence efficiency of rare-earth ions via the multi-photon absorption process is crucial in several related application areas.
Leader-following consensus of fractional order multi-agent systems is investigated. The agents are considered as discrete-time fractional order integrators or f
The performance of a superconducting quantum interference device (SQUID) gradiometer is always determined by its pick-up coil geometry,such as baseline and radi
Cavity optomechanical systems provide powerful platforms to manipulate photons and phonons,open potential applications for mode optical communications and preci