AP0868 Study of Transient Laser-Induced Self-Focusing and Optical Modulation of Porous Silicon Films Using Pump-Probe Spectroscopy. Iraqi Journal of Applied Physics, [S. l.], v. 20, n. 4, p. 867–872, 2025. DOI: 10.2025/efkjxg40. Disponível em: http://ijap-iq.com/index.php/ijap/article/view/141. Acesso em: 7 may. 2026.