Observation of Dicke Superradiance in Optically Pumped HF Gas
N. SkribanowitzDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139Irving P. HermanDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139J. C. MacGillivrayDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139Michael S. FeldDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
1973en
ABI
Annotatsiya
We have found that room-temperature HF gas at millitorr pressures, optically pumped to produce a total inversion at a rotational transition in the $v=1$ vibrational state, emits a superradiant pulse with ringing after a considerable delay (\ensuremath{\sim} microseconds). A semiclassical analysis shows that for a high-gain system the pulse evolution is determined by a single parameter ${\ensuremath{\tau}}_{R}$, and that inhomogeneous broadening is unimportant. Close agreement between theory and experiment is obtained.
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