Mishchik Konstantin, Petit Yannick, Brasselet Etienne, Royon Arnaud, Cardinal Thierry, Canioni Lionel
Opt Lett. 2015 Jan 15;40(2):201-4. doi: 10.1364/OL.40.000201.
We report on structured light-induced femtosecond direct laser writing (DLW) under tight focusing in non-commercial silver-containing zinc phosphate glass, which leads to original patterns of fluorescent silver clusters. These fluorescence topologies show unique features of frustrated diffusion of charged species, giving rise to distorted silver cluster spatial distributions. Fluorescence and second harmonic generation correlative microscopy demonstrate the realization of structured light-induced direct laser poling, resulting from a laser-induced permanent and stable electric field buried inside the modified glass. Thus, structured light-induced DLW remarkably enables both linear and nonlinear patterning. This work highlights the interest of optical phase engineering to obtain nontrivial beam profiles and subsequent photo-induced patterns that cannot be reached under Gaussian beam irradiation.
我们报道了在非商用含银磷酸锌玻璃中紧聚焦条件下结构光诱导的飞秒直接激光写入（DLW），这导致了荧光银团簇的原始图案。这些荧光拓扑结构显示了带电物种受阻扩散的独特特征，导致银团簇空间分布扭曲。荧光和二次谐波产生相关显微镜证明了结构光诱导的直接激光极化的实现，这是由埋在改性玻璃内部的激光诱导的永久且稳定的电场引起的。因此，结构光诱导的DLW显著地实现了线性和非线性图案化。这项工作突出了光学相位工程对于获得在高斯光束照射下无法实现的非平凡光束轮廓和随后的光诱导图案的意义。
