We numerically study the statistical fluctuations of photonic band gaps in ensembles of stealthy hyperuniform disordered patterns. We find that at low stealthiness, where correlations are weak, band gaps of different system realizations appear over a wide frequency range, are narrow, and generally do not overlap. Interestingly, above a critical...
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2023 (v1)Journal articleUploaded on: May 24, 2023
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2022 (v1)Journal article
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May 1, 2009 (v1)Journal article
We address the problem of achieving an optical random laser with a cloud of cold atoms, in which gain and scattering are provided by the same atoms. The lasing threshold can be defined using the on-resonance optical thickness b0 as a single critical parameter. We predict the threshold quantitatively, as well as power and frequency of the...
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June 22, 2022 (v1)Journal article
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September 2020 (v1)Journal article
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Uploaded on: December 4, 2022 -
2010 (v1)Journal article
Atoms can scatter light and they can also amplify it by stimulated emission. From this simple starting point, we examine the possibility of realizing a random laser in a cloud of laser-cooled atoms. The answer is not obvious as both processes (elastic scattering and stimulated emission) seem to exclude one another: pumping atoms to make them...
Uploaded on: December 3, 2022