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Optical parametric oscillation with distributed feedback in cold atoms

Abstract : There is currently a strong interest in mirrorless lasing systems, in which the electromagnetic feedback is provided either by disorder (multiple scattering in the gain medium) or by order (multiple Bragg reflection). These mechanisms correspond, respectively, to random lasers and photonic crystal lasers. The crossover regime between order and disorder, or correlated disorder, has also been investigated with some success. Here, we report one-dimensional photonic-crystal lasing (that is, distributed feedback lasing) with a cold atom cloud that simultaneously provides both gain and feedback. The atoms are trapped in a one-dimensional lattice, producing a density modulation that creates a strong Bragg reflection with a small angle of incidence. Pumping the atoms with auxiliary beams induces four-wave mixing, which provides parametric gain. The combination of both ingredients generates a mirrorless parametric oscillation with a conical output emission, the apex angle of which is tunable with the lattice periodicity.
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Submitted on : Wednesday, February 1, 2012 - 2:01:21 PM
Last modification on : Thursday, November 21, 2019 - 1:14:01 PM
Long-term archiving on: : Wednesday, May 2, 2012 - 2:32:11 AM


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  • HAL Id : hal-00626835, version 2
  • ARXIV : 1109.6114


Alexander Schilke, Claus Zimmermann, Philippe Courteille, William Guerin. Optical parametric oscillation with distributed feedback in cold atoms. Nature Photonics, Nature Publishing Group, 2012, 6, pp.101. ⟨hal-00626835v2⟩



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