Superradiance of a subwavelength array of independent classical nonlinear emitters
Abstract
We suggest a mechanism for the emergence of a superradiance burst in a subwavelength array of nonlinear classical emitters. We assume that the emitters interact via their common field of radiative response and that they may have an arbitrary distribution of initially phases. We show that only if this distribution is not uniform, a non-zero field of radiative response arises leading to a superradiance burst. Although this field cannot synchronize the emitters, it forces fast oscillations of a classical nonlinear emitter to have long-period envelopes. Constructive interference in the envelopes creates a large dipole moment of the array which results in a superradiance pulse. The intensity of the superradiance is proportional to the squared number of the emitters, which envelopes participate in the fluctuation.
Keywords
Cite
@article{arxiv.1505.05414,
title = {Superradiance of a subwavelength array of independent classical nonlinear emitters},
author = {N. E. Nefedkin and E. S. Andrianov and A. A. Zyablovsky and A. A. Pukhov and A. P. Vinogradov and A. A. Lisyansky},
journal= {arXiv preprint arXiv:1505.05414},
year = {2016}
}