Kawai, Shinji. “Sensitization of Er3+ Emission in Er- and Yb-Doped Si Thin Films by Laser Ablation”. International Conference on Plasma Surface Engineering 2, no. 13 (March 4, 2013): 184–187. Accessed April 19, 2024. https://wcc.ep.liu.se/index.php/PSE/article/view/425.