Razak, Nurul Nadia, Anas Abdul Latiff, Zahriladha Zakaria, and Sulaiman Wadi Harun. “Q-Switched Erbium-Doped Fiber Laser With a Black Phosphorus Saturable Absorber”. Photonics Letters of Poland 9, no. 2 (July 1, 2017): pp. 72–74. Accessed May 4, 2024. http://www.photonics.pl/PLP/index.php/letters/article/view/9-26.