Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Photonic crystal surface-emitting lasers or PCSELs are laser diodes that generate laser beams through controlled light wave interaction within a photonic crystal structure. In a recent study, ...

(InvestigateTV) — Police officers, paramedics and firefighters respond to emergencies like wrecks, fires and crime daily. Many times they are flying blind into potentially dangerous situations. A new ...