Passively Q-switched flashlamp pumped Nd:YAG laser using liquid graphene oxide as saturable absorber

• Main Authors: Adnan, N.N., Bidin, N., M.Taib, N.A., Haris, H., Fakaruddin, M., Hashim, A.M., Krishnan, G., Harun, S.W.
• Format: Article
• Language: English
• Published: Elsevier 2016
• Subjects: QC Physics; TP200-248 Chemicals: Manufacture, use, etc.
• Online Access: http://eprints.uthm.edu.my/4475/1/AJ%202016%20%2851%29.pdf; http://eprints.uthm.edu.my/4475/; http://dx.doi.org/10.1016/j.optlastec.2015.12.016
• Institution: Universiti Tun Hussein Onn Malaysia

The performance of passively Q-switched Nd:YAG laser operating at 1060 nm is demonstrated using liquid graphene oxide (GO) composite solution as saturable absorber for the first time. The Q-switched Nd:YAG laser is pumped by a xenon flashlamp. The GO was prepared using the simplified Hummer's method and then mixed with polyethylene oxide to form a composite solution. The Q-switched pulsed laser operates at wavelength of 1064.5 nm with a threshold pump energy of 33.64 J. The maximum output Q-switched laser energy of 41.6 mJ achieved at the maximum pump energy of 81 J. The corresponding pulse width is 98.67 ns.