Lasing has been observed in a dye-doped liquid crystal placed between one substrate with a large transparent electrode and the other with a system of parallel nontransparent electrode stripes of 15 mu m period. The stripes operate as a shadow mask providing the spatial modulation of the pump beam and material gain and, with the voltage applied, it additionally creates a Bragg resonator structure due to the spatial modulation of refraction. With that simple cell, a voltage induced tuning of the spectral positions of laser lines over 25 nm has been demonstrated.

Simple voltage tunable liquid crystal laser

CIPPARRONE, Gabriella;PAGLIUSI, Pasquale;
2007-01-01

Abstract

Lasing has been observed in a dye-doped liquid crystal placed between one substrate with a large transparent electrode and the other with a system of parallel nontransparent electrode stripes of 15 mu m period. The stripes operate as a shadow mask providing the spatial modulation of the pump beam and material gain and, with the voltage applied, it additionally creates a Bragg resonator structure due to the spatial modulation of refraction. With that simple cell, a voltage induced tuning of the spectral positions of laser lines over 25 nm has been demonstrated.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/130664
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