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Study Demonstrates Vertical-Cavity Surface-Emitting Laser of Shortest Wavelength Written by AZoOpticsDec 22 2020 Scientists from the Chalmers University of Technology, together with collaborators at Technische Universität Berlin, have developed and exhibited the shortest wavelength ever reported for a vertical-cavity surface-emitting laser (VCSEL). An artistic illustration of an optically pumped ultraviolet B (UVB) vertical-cavity surface-emitting laser (VCSEL). Image Credit: Krantz NanoArt. The study could lay the basis for future applications in, for instance, disinfection and medical treatment. The study findings were published recently in the scientific journal ACS Photonics. Although there is still much work to be done, especially to enable electrically driven devices, this demonstration provides an important building block for the realization of practical VCSELs covering the major part of the UV spectral range.

Technische universitKrantz nanoartFilip hjortPhotonics laboratoryChalmers university of technologyDepartment of microtechnologyChalmers universityImage creditStudy first authorPhd studentபிலிப் ஹஜோர்ட்ஃபோட்டானிக்ஸ் ஆய்வகம்சால்மர்ஸ் பல்கலைக்கழகம் ஆஃப் தொழில்நுட்பம்சால்மர்ஸ் பல்கலைக்கழகம்படம் கடன்படிப்பு முதல் நூலாசிரியர்