Multiphoton propagation eigenmodes for sum-frequency generation
Abstract
In linear optics, modes correspond to a set of fields that are mutually orthogonal, however, in the nonlinear regime the principle of linear superposition is no longer valid and consequently, the method of mode decomposition breaks down. This is the case when considering sum-frequency generation in a nonlinear crystal. Here, we use the non-depleting pump approximation to describe the nonlinear interaction with low-intensity multiphoton fields. We show that the description of multiphoton fields using the propagation eigenmodes simplifies the Fock state quantum behaviour of the system while remaining equivalent to the standard approach.
Citation
Docherty-Walthew , G , Ballantine , K & Mazilu , M 2020 , ' Multiphoton propagation eigenmodes for sum-frequency generation ' , Optics Communications , vol. 466 , 125610 . https://doi.org/10.1016/j.optcom.2020.125610
Publication
Optics Communications
Status
Peer reviewed
ISSN
0030-4018Type
Journal article
Description
Funding: UK Engineering and Physical Sciences Research Council (EPSRC) Grant EP/M000869/1 (M.M.).Collections
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