Surface-related white light emission phenomenon in transparent solids
M. Chaika, R. Tomala, M. Oleszko, W. Strek
TL;DR
This study investigates laser-induced white emission in Cr:YAG ceramics, revealing surface-specific phenomena dependent on excitation power and vacuum conditions, explained by an IVCT mechanism involving Cr ion pairs.
Contribution
It introduces the observation of surface-specific LIWE in Cr:YAG ceramics and links it to an IVCT mechanism, highlighting the role of surface conditions and excitation thresholds.
Findings
LIWE occurs only on the surface, not in the bulk.
Vacuum conditions are necessary for LIWE observation.
LIWE intensity increases above a critical excitation power.
Abstract
Laser induced white emission (LIWE) caused by infrared laser excitation in Cr:YAG transparent ceramics was investigated. It was found that ceramics generates bright LIWE for excitation powers above a critical threshold. The LIWE was observed on the surface but not in the bulk on both sides of the sample. The vacuum conditions are required to observe LIWE. This phenomenon was discussed within the frame of Inter-Valence Charge Transfer (IVCT) mechanism in the Cr3+/Cr4+ ion pair.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsLuminescence Properties of Advanced Materials · Solid State Laser Technologies · Laser Material Processing Techniques