碲酸盐玻璃中焦体积外的直写laser诱导的自组织和金属化
Direct-write laser-induced self-organization and metallization beyond the focal volume in tellurite glass
摘要：
我们报告的自组织过程中，在重复飞秒激光照射下的制度，累积效应导致局部熔化的钾钨碲酸盐玻璃表面上发起的。具体来说，我们表明，自组织的周期性图案组成的平行纳米平面垂直于激光偏振形成和延伸超出直接激光照射下的区域。检查的改性区域显示从玻璃态碲氧化物的结晶元素碲的相变。此外，我们观察到，这种自组织过程，与元素的重新分配和脱氧，是由光场强度触发。我们认为，早期的自组织纳米结构形成的局部场增强，随后加强了金属化事件在露天大气中。
英文摘要：
We report on a self-organized process initiated on a potassium-tungsten-tellurite glass surface under repetitive femtosecond laser irradiation in a regime where cumulative effects lead to a localized melting. Specifically, we show that self-organized periodic patterns consisting of parallel nanoplanes perpendicular to the laser polarization are forming and extending beyond the zone under direct laser exposure. Examination of the modified regions revealed a phase change from a glassy tellurium-oxide to a crystalline elemental tellurium. In addition, we observe that this self-organization process, associated with elemental redistribution and deoxygenation, is triggered by the optical-field strength. We suggest that early self-organized nanostructures formed by a local-field enhancement is subsequently reinforced by a metallization event in an open-air atmosphere.
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