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Lambda Research Optics, Inc. - DFO
Photonics Dictionary

photonic crystal surface-emitting laser

A photonic crystal surface-emitting laser (PCSEL) refers to a type of laser diode that emits light from its surface rather than from the edges.

Photonic crystals are periodic nanostructures that can control the propagation of light. In a PCSEL, these photonic crystals are integrated into the device structure to enable efficient light emission from the surface. By carefully engineering the photonic crystal structure, PCSELs can achieve high-power output, narrow linewidth, and single-mode operation.

PCSELs have various applications, including optical communications, optical sensing, medical imaging, and laser printing. Their surface-emitting nature simplifies packaging and integration into photonic circuits, making them promising candidates for next-generation optoelectronic devices.
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