Bogris Athanasios, Burger Nikolaos A, Makris Konstantinos G, Loppinet Benoit, Fytas George
FORTH, Institute of Electronic Structure and Laser, 70013 Heraklion, Crete, Greece.
Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Crete, Greece.
ACS Photonics. 2022 Feb 16;9(2):722-728. doi: 10.1021/acsphotonics.1c01917. Epub 2022 Feb 1.
Low-power visible light can lead to spectacular nonlinear effects in soft-matter systems. The propagation of visible light through transparent solutions of certain polymers can experience either self-focusing or defocusing nonlinearity, depending on the solvent. We show how the self-focusing and defocusing responses can be captured by a nonlinear propagation model using local spatial and time-integrating responses. We realize a remarkable pattern formation in ternary solutions and model it assuming a linear combination of the self-focusing and defocusing nonlinearities in the constituent solvents. This versatile response of solutions to light irradiation may introduce a new approach for self-written waveguides and patterns.
低功率可见光可在软物质系统中引发显著的非线性效应。可见光在某些聚合物的透明溶液中传播时，根据溶剂的不同，会经历自聚焦或散焦非线性效应。我们展示了如何通过使用局部空间和时间积分响应的非线性传播模型来捕捉自聚焦和散焦响应。我们在三元溶液中实现了显著的图案形成，并假设组成溶剂中的自聚焦和散焦非线性的线性组合对其进行建模。溶液对光照射的这种通用响应可能会为自写波导和图案引入一种新方法。
