Subnatural Linewidth Superradiant Lasing with Cold 88Sr Atoms
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Subnatural Linewidth Superradiant Lasing with Cold 88Sr Atoms. / Kristensen, Sofus Laguna; Bohr, Eliot; Robinson-Tait, Julian; Zelevinsky, Tanya; Thomsen, Jan W.; Müller, Jörg Helge.
In: Physical Review Letters, Vol. 130, No. 22, 223402, 02.06.2023.Research output: Contribution to journal › Letter › Research › peer-review
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TY - JOUR
T1 - Subnatural Linewidth Superradiant Lasing with Cold 88Sr Atoms
AU - Kristensen, Sofus Laguna
AU - Bohr, Eliot
AU - Robinson-Tait, Julian
AU - Zelevinsky, Tanya
AU - Thomsen, Jan W.
AU - Müller, Jörg Helge
N1 - Publisher Copyright: © 2023 American Physical Society.
PY - 2023/6/2
Y1 - 2023/6/2
N2 - Superradiant lasers operate in the bad-cavity regime, where the phase coherence is stored in the spin state of an atomic medium rather than in the intracavity electric field. Such lasers use collective effects to sustain lasing and could potentially reach considerably lower linewidths than a conventional laser. Here, we investigate the properties of superradiant lasing in an ensemble of ultracold Sr88 atoms inside an optical cavity. We extend the superradiant emission on the 7.5 kHz wide P31→S10 intercombination line to several milliseconds, and observe steady parameters suitable for emulating the performance of a continuous superradiant laser by fine tuning the repumping rates. We reach a lasing linewidth of 820 Hz for 1.1 ms of lasing, nearly an order of magnitude lower than the natural linewidth.
AB - Superradiant lasers operate in the bad-cavity regime, where the phase coherence is stored in the spin state of an atomic medium rather than in the intracavity electric field. Such lasers use collective effects to sustain lasing and could potentially reach considerably lower linewidths than a conventional laser. Here, we investigate the properties of superradiant lasing in an ensemble of ultracold Sr88 atoms inside an optical cavity. We extend the superradiant emission on the 7.5 kHz wide P31→S10 intercombination line to several milliseconds, and observe steady parameters suitable for emulating the performance of a continuous superradiant laser by fine tuning the repumping rates. We reach a lasing linewidth of 820 Hz for 1.1 ms of lasing, nearly an order of magnitude lower than the natural linewidth.
U2 - 10.1103/PhysRevLett.130.223402
DO - 10.1103/PhysRevLett.130.223402
M3 - Letter
C2 - 37327424
AN - SCOPUS:85161827549
VL - 130
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 22
M1 - 223402
ER -
ID: 360815381