Electrically controlled white laser emission through liquid crystal/polymer multiphases.,Light: Science & Applications

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Electrically controlled white laser emission through liquid crystal/polymer multiphases.
Light: Science & Applications ( IF 20.6 ) Pub Date : 2020-02-11 , DOI: 10.1038/s41377-020-0252-9
Alina Adamow _{1,

2} , Adam Szukalski ₂ , Lech Sznitko ₁ , Luana Persano ₂ , Dario Pisignano _{2,

3} , Andrea Camposeo ₂ , Jaroslaw Mysliwiec ₁

Affiliation

White lasers are becoming increasingly relevant in various fields since they exhibit unprecedented properties in terms of beam brightness and intensity modulation. Here we introduce a white laser based on a polymer matrix encompassing liquid crystals and multiple organic chromophores in a multifunctional phase-separation system. The separation of the hydrophilic matrix and the hydrophobic liquid crystals leads to the formation of a complex optically active layer, featuring lasing emission tuneable from blue to red. White laser emission is found with an optical excitation threshold of approximately 12 mJ/cm2. Importantly, an external electric field can be used to control the device emission intensity. White lasers with low-voltage (≤10 V) controllable emission might pave the way for a new generation of broadband light sources for analytical, computational, and communication applications.

中文翻译：

通过液晶/聚合物多相进行电控白色激光发射。

白激光在光束亮度和强度调制方面表现出空前的性能，因此在各个领域都变得越来越重要。在这里，我们介绍了一种基于聚合物基质的白色激光器，该聚合物基质在多功能相分离系统中包含液晶和多种有机发色团。亲水性基质和疏水性液晶的分离导致形成复杂的光学活性层，其特征在于可将激光发射从蓝色调整为红色。发现白色激光发射的光激发阈值约为12 mJ / cm2。重要的是，可以使用外部电场来控制设备的发射强度。低压（≤10V）可控发射的白光激光器可能为新一代用于分析，

更新日期：2020-02-11

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