Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Reflective microcavity confinement reshapes ultrafast energy localization across water–copper interfaces. |
| Συγγραφείς: |
Jiang, Jiayi, Li, Xintong, Chen, Zhou, Hu, Zhan, Sun, Chenglin, Li, Fabing |
| Πηγή: |
Applied Physics Letters; 10/5/2026, Vol. 129 Issue 14, p1-5, 5p |
| Θεματικοί όροι: |
Femtosecond lasers, Emission spectroscopy, Microcavity lasers, Metal analysis, Electric breakdown |
| Περίληψη: |
The evolution of ultrafast energy localization as a femtosecond laser focus across a reflective liquid–metal interface remains incompletely understood, particularly within confined geometries. Here, we investigate the interface-crossing energy localization of femtosecond breakdown in water-filled copper microcavities using in situ emission spectroscopy. Axial focal scanning reveals three distinct localization modes, corresponding to direct focusing breakdown, localization collapse near the interface, and reflection-mediated relocalization, respectively. In planar reflective geometries, the breakdown emission rapidly vanishes after the focus enters the metal substrate, followed by reflection-mediated relocalization after millimeter-scale propagation. In contrast, reflective microcavity confinement maintains continuous emission enhancement across the interface region and compresses the reflective relocalization distance to approximately 200 μm. These results demonstrate that reflective confinement reshapes ultrafast energy-localization during liquid–metal interface crossing. The bottom and sidewall reflections redirect the post-interface field back into the confined liquid, suppressing the localization-collapse and enabling rapid recovery of liquid-phase breakdown. [ABSTRACT FROM AUTHOR] |
|
Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Βάση Δεδομένων: |
Complementary Index |