Abstract
The control of light by light is one of the main aims in modern photonics. In this context, a fundamental cornerstone is the realization of light-written waveguides in real time, resulting in all-optical reconfigurability of communication networks. Light-written waveguides are often associated with spatial solitons, that is, non-diffracting waves due to a nonlinear self-focusing effect in the harmonic regime. From an applicative point of view, it is important to establish the temporal dynamics for the formation of such light-written guides. Here, we investigate theoretically the temporal dynamics in nematic liquid crystals, a material where spatial solitons can be induced using continuous wave lasers with a few milliwatts of power. We fully address the role of the spatial walk-off and the longitudinal nonlocality in the waveguide formation. We show that for powers large enough to induce light self-steering the beam undergoes several fluctuations before reaching the stationary regime, in turn leading to a much longer formation time for the light-written waveguide.
Original language | English |
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Pages (from-to) | 1878-1887 |
Number of pages | 10 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 35 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2018 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics
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Temporal dynamics of light-written waveguides in unbiased liquid crystals
Alberucci, A. (Creator), Barboza, R. (Creator) & Nolte, S. (Creator), figshare, 13 Jul 2018
DOI: 10.6084/m9.figshare.c.4084154.v1
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