AU - Mashayekhi asl, Ali AU - Anaraki, Mahdi AU - Miri, Sadegh AU - Rahimzadeh, Nazli AU - Mashayekhi asl, Jahanbakhsh TI - The effect of Surface roughness on Laser Induced Damage Threshold of Ag metal layers PT - JOURNAL ARTICLE TA - opsi JN - opsi VO - 24 VI - 0 IP - 0 4099 - http://opsi.ir/article-1-1526-en.html 4100 - http://opsi.ir/article-1-1526-en.pdf SO - opsi 0 ABĀ  - In this research the effect of roughness was investigated on Laser Induced Damage Threshold. For this work, four silver layers with different roughness were used. Thin silver layers were deposited by magnetron sputtering method. The thickness of all samples was 150nm. The surface quality of mirrors was investigated by Zeiss optical microscope and then, their morphologies were study by AFM microscope. Finally, Laser Induced Damage Threshold (LIDT) test was performed for all Ag mirrors by 250W, CW, Nd:YAG laser. The results show that surface roughness has direct effect on amount of LIDT, and high amount of roughness will decrease the damage threshold. CP - IRAN IN - LG - eng PB - opsi PG - 749 PT - Research YR - 2018