PCSELs May Redefine Diode Lasers in Industry and Lidar

Can diode lasers offer high power — and a good beam profile? Photonic-crystal surface-emitting lasers achieve these qualities and show promise for numerous applications.

The concept of diode lasers was born early in the age of laser technology and has come a long way. From a fragile, liquid nitrogen-cooled laboratory device, it has evolved into an integrated, highly energy-efficient laser system.
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