18.09.2024
Scientists from Wrocław University of Science and Technology offer a new perspective on the principles of operation of semiconductor lasers.
Scientists from Wrocław University of Science and Technology have introduced a new perspective on the operation of semiconductor lasers, using devices similar to those currently applied in industries like smartphones and telecommunications. Traditionally, semiconductor lasers rely on population inversion to amplify light through stimulated emission. However, the researchers chose a non-standard spectral alignment between the laser’s active region and resonator, leading to a fundamentally different mechanism where photons form a Bose-Einstein condensate, yet still exhibit properties similar to lasers under classic conditions.
This breakthrough offers potential for improved laser performance, as the photon condensate behaves similarly to lasers operating under traditional conditions. The new laser operation mode, though not fully understood yet, shows enormous application potential, particularly for improving beam performance, coherence, and stability. Such advancements are vital for technologies like LiDAR systems in autonomous vehicles. The discovery was validated by two independent teams from Imperial College London and Wrocław University of Science and Technology/ Łódź University of Technology.
Source: https://scienceinpoland.pl/en/news/news%2C104125%2Cbose-einstein-condensation-photons-laser.html
