Rugged mHz-Linewidth Superradiant Laser Driven by a Hot Atomic Beam

Published on Dec 18, 2020in Physical Review Letters8.385
· DOI :10.1103/PHYSREVLETT.125.253602
Haonan Liu2
Estimated H-index: 2
Simon B. Jäger8
Estimated H-index: 8
(NIST: National Institute of Standards and Technology)
+ 4 AuthorsTravis Nicholson10
Estimated H-index: 10
(NUS: National University of Singapore)
We propose a new type of superradiant laser based on a hot atomic beam traversing an optical cavity. We show that the theoretical minimum linewidth and maximum power are competitive with the best ultracoherent clock lasers. Also, our system operates naturally in continuous wave mode, which has been elusive for superradiant lasers so far. Unlike existing ultracoherent lasers, our design is simple and rugged. This makes it a candidate for the first widely accessible ultracoherent laser, as well as the first to realize sought-after applications of ultracoherent lasers in challenging environments.
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