A new tuning strategy for mirror-less liquid crystals laser is presented. A three layer cell is prepared with two cholesteric layers sandwiching a layer containing an isotropic mixture of a photoluminescent dye. One of the chiral layers contains a wide band gap material while the second layer consists of a series of small band gap materials. Through the combination of these two layers, a set of mirrors that can selectively reflect different wavelengths is obtained. A different laser wavelength is emitted from different regions of the cell under the pumping beam irradiation.
Wide band gap materials as a new tuning strategy for dye doped cholesteric liquid crystals laser / Petriashvili, G; Matranga, Ma; DE SANTO, Maria Penelope; Chilaya, G; Barberi, Riccardo Cristoforo. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 17:6(2009), pp. 4553-4558.
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Titolo: | Wide band gap materials as a new tuning strategy for dye doped cholesteric liquid crystals laser |
Autori: | |
Data di pubblicazione: | 2009 |
Rivista: | |
Citazione: | Wide band gap materials as a new tuning strategy for dye doped cholesteric liquid crystals laser / Petriashvili, G; Matranga, Ma; DE SANTO, Maria Penelope; Chilaya, G; Barberi, Riccardo Cristoforo. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 17:6(2009), pp. 4553-4558. |
Handle: | http://hdl.handle.net/20.500.11770/151418 |
Appare nelle tipologie: | 1.1 Articolo in rivista |