To improve the tracking servo performance, a novel signal waveform multi-level (SWML) read-only disc realized on the dig......

Using Ti as the super-resolution reflective film to replace the Al reflective layer in conventional read-only optical di......

A superlattice-like (SLL) structure was applied to phase-change optical recording. The recording layer consisting of alt......

In this Letter, we demonstrate high-quality (Q), millimeter-size, and V-shaped calcium fluoride crystalline resonators f......