Abstract

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.

© 2019 Optical Society of America

Spatial solitons to mold random lasers in nematic liquid crystals [Invited]

Sreekanth Perumbilavil, Armando Piccardi, Oleksandr Buchnev, Giuseppe Strangi, Martti Kauranen, and Gaetano Assanto
Opt. Mater. Express 8(12) 3864-3878 (2018)

All-optical guided-wave random laser in nematic liquid crystals

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Anomalous interaction of spatial solitons in nematic liquid crystals

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Electrically tunable polarization of random lasing from dye-doped nematic liquid crystals

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