Microexplosions in bulk sapphire driven by simultaneously spatially and temporally focused femtosecond laser beams
Abstract
We report experimental results on the formation of microvoids in bulk sapphire produced through the single-shot illumination of the sample by near-infrared, simultaneously spatially and temporally focused (SSTF) laser beams. Compared with the cases of tightly focused femtosecond Gaussian and flattop beams, the SSTFs produce internal microvoids with significantly larger volumes and without cracks between the interaction sites, which may be beneficial for applications in volumetric data storage and for the studies of exotic, super-dense elemental phases contained in the densified shells surrounding the microvoids.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 26, 2023
- Source ID
- 10.1364/ol.482320
Entities
People
- Pavel Polynkin
- Weibo Cheng
- Xiaolong Liu
- Ya Cheng
- Zhaohui Wang
Organizations
- Air Force Office of Scientific Research
- Chinese Academy of Sciences
- East China Normal University
- Office of Naval Research
- University of Arizona