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Rather than relying on photons to store phase coherence, it relies on collective effects in an atomic medium to store coherence. Such a laser uses repumped Dicke superradiance (or superfluorescence) to sustain emission of light that can have a substantially narrower linewidth than a conventional laser.
- "'Superradiant' laser created for first time". physicsworld.com. Apr 5, 2012.
- "New Way of Lasing: A 'Superradiant' Laser". Science Daily. April 4, 2012.
- Meiser, D. "Prospects for a Millihertz-Linewidth Laser". Physical Review Letters. 102. arXiv:0901.3105. Bibcode:2009PhRvL.102p3601M. doi:10.1103/PhysRevLett.102.163601.
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