Electro-optic steering of random laser emission in liquid crystals

Authors

  • Gaetano Assanto University Roma Tre http://orcid.org/0000-0002-3070-5250
  • Sreekanth Perumbilavil Tampere University of Technology
  • Armando Piccardi University Roma Tre
  • Martti Kauranen Tampere University of Technology

DOI:

https://doi.org/10.4302/plp.v10i4.852

Abstract

Using an external low-frequency electric field applied to dye-doped nematic liquid crystals, we demonstrate that random lasing obtained by optical pumping can be steered in angular direction by routing an all-optical waveguide able to collect the emitted light. By varying the applied voltage from 0 to 2 V, we reduce the walk-off and sweep the random laser guided beam over 7 degrees.

Full Text: PDF

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Author Biographies

Gaetano Assanto, University Roma Tre

Dep. of Engineering

Prof.

Sreekanth Perumbilavil, Tampere University of Technology

Photonics

PhD student

Armando Piccardi, University Roma Tre

Engineering

Researcher

Martti Kauranen, Tampere University of Technology

Photonics

Prof

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Published

2018-12-31

How to Cite

[1]
G. Assanto, S. Perumbilavil, A. Piccardi, and M. Kauranen, “Electro-optic steering of random laser emission in liquid crystals”, Photonics Lett. Pol., vol. 10, no. 4, pp. 103–105, Dec. 2018.

Issue

Vol. 10 No. 4 (2018)

Section

Articles

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