Results 251 to 260 of about 292,233 (298)
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Squeezing of spontaneous emission in a laser
Physical Review Letters, 1987It is predicted that a laser's phase-diffusion rate (its Schawlow-Townes linewidth) may be reduced by as much as one-half when the laser is coupled out to ''squeezed vacuum'' as opposed to ordinary vacuum. The effect is important because it is directly related to spontaneous emission in a squeezed vacuum. It shows that a part of spontaneous emission is
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Search for the spontaneous emission of pions
Physical Review C, 1989A search has been made for the spontaneous emission of neutral pions from Pb, Bi, Th, U, and /sup 252/Cf. None has been observed and for the most likely candidate, /sup 252/Cf, the limit is 3.3 x 10/sup -10/ of spontaneous fission with a 90% confidence level.
, Stanislaus, , Armstrong, , Measday
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Dynamical suppression of spontaneous emission
Physical Review Letters, 1987We study the influence of a strong resonant driving field on the spectral properties of a single, cavity-confined, two-level atom. Under conditions of atom-cavity resonance, the lines of the Mollow resonance fluorescence triplet are found to narrow with increasing driving field strength, indicating a dynamical decoupling of the atom from the vacuum ...
, Lewenstein, , Mossberg, , Glauber
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Random Walks with Spontaneous Emission
Journal of the Society for Industrial and Applied Mathematics, 1961the rate of one step every T2 seconds. We assume, as usual, that two kinds of sites exist in the lattice, "6ordinary" or "good" ones and a fraction q of "'absorbhig" or "bad" ones, the latter having the property of absorbing the particle if it chances upon one of them, thus terminating the walk.
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Spontaneous emission in the optical microscopic cavity
Physical Review A, 1991The quantum theory of the spontaneous emission (SpE) from an active microscopic cavity (microcavity) is given with emphasis on mirror separations of the order of the optical wavelength. The theory is based on a complete set of orthonormal-mode functions that include both transverse polarizations and span the infinite three dimensional space that ...
Francesco DE MARTINI +4 more
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American Journal of Physics, 1984
This paper is a discussion of that perennial question, ‘‘Why does an excited atom radiate?’’ A satisfactory physical picture emerges when proper account is taken of the interplay between radiation reaction and the (quantum-mechanical) zero-point fluctuations of the radiation field.
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This paper is a discussion of that perennial question, ‘‘Why does an excited atom radiate?’’ A satisfactory physical picture emerges when proper account is taken of the interplay between radiation reaction and the (quantum-mechanical) zero-point fluctuations of the radiation field.
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Amplified Spontaneous Emission
1973In 1954 Dicke [1] discussed the possibility of a coherent cooperative process between an ensemble of two-level atoms. His paper has become a classic, and discusses the process now known as super-radiance. At the time the paper attracted relatively little attention except that of a few who worked in r.f. spectroscopy.
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