Ultraviolet vertical-cavity surface-emitting lasers and vertical microcavities for blue lasers
See t.ly/44NK — III-nitride materials are used for ultraviolet (UV) and visible light emitters. One such light source is the vertical-cavity surface-emitting laser (VCSEL) that could find applications within areas ranging from sterilization and medical treatment to car headlights and augmented reality displays. These devices are not yet commercialized, because of challenging mirror formation and electrical injection. However, due to the recent substantial performance improvement of blue-emitting VCSELs, it might not be long before they are available. UV VCSELs, on the other hand, are far from ready. Until recently, there were no VCSELs emitting in the UVB (280-320 nm)…
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