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Numrering	Referens	Omslagsbild	Hitta
1.	Apaydin, Dogukan, 1991, et al. (författare) Optically Pumped UVC Photonic Crystal Surface-Emitting Laser 2023 Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract Photonic crystal surface-emitting lasers (PCSELs) are a new type of semiconductor lasers that offer a high optical output power while maintaining single-mode operation and a low divergence angle. Such devices rely upon the in-plane optical feedback from a two-dimensional photonic crystal and feature out-of-plane emission of the modes with zero group velocity at the photonic band edges by diffraction. Since the demonstration of the first PCSEL [1], the concept has been implemented in standard semiconductor materials with the demonstration of highperforming infrared and blue-emitting lasers [2, 3]. Extending the laser operation to shorter emission wavelengths would be a major breakthrough as such lasers would be of high interest for disinfection, material processing, curing, and medical treatments.

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