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Random lasing control with optical spatial solitons in nematic liquid crystals

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationPHOTOPTICS 2019 - Proceedings of the 7th International Conference on Photonics, Optics and Laser Technology
EditorsPaulo Ribeiro, Maria Raposo, David Andrews
Number of pages5
ISBN (Electronic)9789897583643
Publication statusPublished - 2019
Publication typeA4 Article in a conference publication
EventInternational Conference on Photonics, Optics and Laser Technology - Prague, Czech Republic
Duration: 25 Feb 201927 Feb 2019


ConferenceInternational Conference on Photonics, Optics and Laser Technology
CountryCzech Republic


We discuss the synergy of reorientational self-focusing and random lasing in a dye- doped nematic liquid crystalline material. The laser emission resulting from amplification and multiple scattering inside the medium can be either modulated or triggered depending on the energy of the visible pump beam and the power of the near-infrared spatial soliton, respectively exciting the two nonlinear responses. Moreover, the presence of the self-induced waveguide improves the properties of the emitted beam, i. e., directionality and profile. Finally, the laser light can be re-directed by steering the spatial soliton with the aid of an external low-frequency electric field.


  • Nematic Liquid Crystals, Optical Spatial Solitons, Random Laser

Publication forum classification

Field of science, Statistics Finland