Abstract
Superfluorescence has been observed at 2931 nm from the 7P3/2, to 7S1/2, transition in cesium. It is shown that a completely inverted two-level system can be prepared in a magnetic field. Experimental results on the superfluorescent output are reported for a range of sample lengths (1.0 cm to 5.0cm)and densities (8 × 109 cm−3 to 2 × 1011 cm−3 ) and for several values of the inhomogeneous dephasing time (5 ns, 18 ns, and 32 ns). For sufficiently long delay times the emission from the pencil-shaped volume of Fresnel number one consists of a single pulse for all sample lengths, both in an atomic beam and in a cell. Neither homogeneous relaxation nor inhomogeneous dephasing can explain the absence of ringing. For increased densities and reduced delay times, depending on the length of the sample,multiple-pulse output occurs. The occurrence of single and multiple pulses, the delay times, and the pulsewidths are discussed.
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Vrehen, Q.H.F. (1977). Single-Pulse Superfluorescence in Cesium. In: Bowden, C.M., Howgate, D.W., Robl, H.R. (eds) Cooperative Effects in Matter and Radiation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2415-7_5
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DOI: https://doi.org/10.1007/978-1-4684-2415-7_5
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