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Title

Molecular quantum wakes for clearing fog

Authors
Larkin, Ilia
Rosenthal, Eric W.
Milchberg, Howard
Published in Optics Express. 2020, vol. 28, no. 8, p. 11463
Abstract High intensity laser filamentation in air has recently demonstrated that, throughplasma generation and its associated shockwave, fog can be cleared around the beam, leaving anoptically transparent path to transmit light. However, for practical applications like free-spaceoptical communication (FSO), channels of multi-centimeter diameters over kilometer ranges arerequired, which is extremely challenging for a plasma based method. Here we report a radicallydifferent approach, based on quantum control. We demonstrate that fog clearing can also beachieved by producing molecular quantum wakes in air, and that neither plasma generationnor filamentation are required. The effect is clearly associated with the rephasing time of therotational wave packet in N2. Pump excitation provided in the form of resonant trains of 8 pulsesseparated by the revival time are able to transmit optical data through fog with initial extinctionas much as -6dB.
Keywords LaserFemtosecondeFilamentFilamentationMolécule
Identifiers
arXiv: 2004.04056
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Other version: https://www.osapublishing.org/abstract.cfm?URI=oe-28-8-11463
Structures
Research group Groupe Wolf
Projects FNS: 200021-178926
H2020: LLR
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(ISO format)
SCHROEDER, Malte Christian et al. Molecular quantum wakes for clearing fog. In: Optics Express, 2020, vol. 28, n° 8, p. 11463. doi: 10.1364/OE.389393 https://archive-ouverte.unige.ch/unige:134509

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Deposited on : 2020-04-14

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