Spatiospectral features of a soliton-assisted random laser in liquid crystals

Sreekanth Perumbilavil, Martti Kauranen, Gaetano Assanto

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


We report on novel features of random lasers assisted by near-infrared spatial solitons in nematic liquid crystals. Specifically, we study the role of light-induced reorientational waveguides (nematicons) on the spatial and spectral distributions of the laser modes. We show that the spatially spiky character of the laser emission propagating backwards with respect to the pump tends to disappear in the forward direction, due to the soliton confinement of the generated light. Moreover, the spectral features associated with various random laser resonances appear to merge upon guided-wave propagation along the nematicon, making the nematicon-aided random laser a bidirectional device with distinct emission properties at the two opposite outputs.

Original languageEnglish
Pages (from-to)3574-3577
Number of pages4
JournalOptics Letters
Issue number14
Publication statusPublished - 2019
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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