Novel combinations of liquid crystalline materials for liquid crystals lasers tuning are presented. The cell is based on a three layer system, with two cholesteric films sandwiching a third layer containing an isotropic mixture of a photoluminescent dye. One of the cholesteric films has a wide band gap and the other one presents a narrow band gap, allowing the laser emission tuning over a wide spectral range, from UV to near IR. Further, using mixtures containing cholesteryl esters, a temperature control can be achieved.
Frequency Tunable Lasing in a Three Layer Cholesteric Liquid Crystal Cell
DE SANTO, Maria Penelope;BARBERI, Riccardo Cristoforo
2010-01-01
Abstract
Novel combinations of liquid crystalline materials for liquid crystals lasers tuning are presented. The cell is based on a three layer system, with two cholesteric films sandwiching a third layer containing an isotropic mixture of a photoluminescent dye. One of the cholesteric films has a wide band gap and the other one presents a narrow band gap, allowing the laser emission tuning over a wide spectral range, from UV to near IR. Further, using mixtures containing cholesteryl esters, a temperature control can be achieved.File in questo prodotto:
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