Its operation principle is completely different from conventional devices, which opens up the possibility of a significantly reduced energy input requirement. The researchers report their work in the current issue of Nature.
Diagram of the electrically driven polariton laser
Graphics: Arash Rahimi-Iman, Department of Applied Physics, University of Würzburg
It also emits light the waves of which are in phase with one another: the polariton laser, developed and validated by University of Würzburg physicists at the Department of Applied Physics, who have worked for years on the respective experiments in close collaboration with an international research team.In this respect, it is similar to the conventional semiconductor laser, which is ubiquitous today in all sorts of places and devices – from the laboratory to the CD player in the living-room.
Gunnar Bartsch | Uni Würzburg
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
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The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
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