发表机构
Institute for Low Temperature and Structure Research, Polish Academy of Sciences（波兰科学院低温与结构研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究从透明Cr:YAG陶瓷中观察到激光诱导的白光发射，仅在表面出现且强度随功率密度指数增长，通过多光子吸收等模型探讨了其起源。
AI 中文摘要
从透明Cr:YAG陶瓷中观察到了激光诱导的白光发射，该陶瓷受到红外激光二极管聚焦连续波光束的照射。激光诱导的白光发射仅在样品表面检测到，在体积内部未观察到。研究发现，发射强度随激光功率密度超过阈值而呈指数增加。测量了宽带发射对通过样品的透射激光束功率的影响。由于激光束位移或环境压力增加导致宽带发射消失，进而引起透射激光束功率的降低。激光诱导白光发射的起源及其特征特性，从多光子吸收、间隔电荷转移和离子空间电荷模型的角度进行了讨论。
英文摘要
Laser-induced white (light) emission was observed from transparent Cr:YAG ceramics irradiated with a focused continuous wave beam of light from an infrared laser diode. The laser-induced white emission is detected only on the surface of the sample and is not observed in volume. It is found that the intensity of the emission increases exponentially with the laser power density above the threshold. The impact of broadband emission on the power of the transmitted laser beam through the sample was measured. The disappearance of broadband emission due to displacement of the laser beam or an increase in ambient pressure leads to a decrease in the power of transmitted laser beam. Origins of the laser-induced white light emission along with its characteristic features are discussed in terms of multiphoton absorption, intervalence charge transfer and ionic space charge models.
Journal refChaika, M., & Strek, W. (2021). Laser induced broad band white emission from transparent Cr4+: YAG ceramics: Origin of broadband emission. Journal of Luminescence, 233, 117935
DOI：10.1016/j.jlumin.2021.117935
