“Advancements in Nonlinear Optical Materials: Paving the Way for Future Photonic Devices”. Poornaprajna International Journal of Basic & Applied Sciences (PIJBAS) 1, no. 1 (July 17, 2024): 1–58. Accessed October 4, 2025. http://poornaprajnapublication.com/index.php/pijbas/article/view/17.