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George Washington University (GWU) researchers have combined multiple transverse coupled cavities to develop a new vertical-cavity surface-emitting laser (VCSEL). The cavities in the laser system enhance the laser’s optical feedback capabilities, helping the laser demonstrate record-fast temporal bandwidth, the researchers reported.
VCSELs, a class of semiconductor laser diodes accompanying a monolithic resonator that emits light in a direction perpendicular to the surface of a chip, are comparatively energy-efficient and high-speed optical interconnects in data centers and supercomputers. VSCELs are compact and deliver high optoelectronic performance. As miniaturized lasers, VSCELs function as an optical source in high-speed,…READ MORE