Pulse delay time statistics in a superradiant laser with calcium atoms
Autor: | Laske, Torben, Winter, Hannes, Hemmerich, Andreas |
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Rok vydání: | 2019 |
Předmět: | |
Zdroj: | Phys. Rev. Lett. 123, 103601 (2019) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevLett.123.103601 |
Popis: | Cold samples of calcium atoms are prepared in the metastable $^{3}$P$_{1}$ state inside an optical cavity resonant with the narrow band (375 Hz) $^{1}$S$_{0} \rightarrow ^{3}$P$_{1}$ intercombination line at 657 nm. We observe superradiant emission of hyperbolic secant shaped pulses into the cavity with an intensity proportional to the square of the atom number, a duration much shorter than the natural lifetime of the $^{3}$P$_{1}$ state, and a delay time fluctuating from shot to shot in excellent agreement with theoretical predictions. Our incoherent pumping scheme to produce inversion on the $^{1}$S$_{0} \rightarrow ^{3}$P$_{1}$ transition should be extendable to allow for continuous wave laser operation. Comment: 13 pages, 7 Figures |
Databáze: | arXiv |
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