Initial Transmission Influence on Saturable Absorber Absorption Activity of Passive Q-Switching Erbium -Doped Fiber Laser System. UTJsci [Internet]. 2023 Dec. 28 [cited 2024 Dec. 25];10(2):224-9. Available from: http://mail.jsci.utq.edu.iq/index.php/main/article/view/1139