Graphene-molybdenum disulphide chitin nanocomposite based passive Q-switcher

• Main Authors: Mohd. Halim, Siti Nabilah, Sapingi, Husni Hani Jameela, Mohamad Taib, Mohamad Fariz, Ahmad, Fauzan
• Format: Article
• Language: English
• Published: Photonics Society of Poland 2022
• Subjects: Q Science (General); TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/103565/1/FauzanAhmad2022_GrapheneMolybdenumDisulphideChitin.pdf; http://eprints.utm.my/103565/; http://dx.doi.org/10.4302/plp.v14i1.1136
• Institution: Universiti Teknologi Malaysia

A simple fabrication of graphene-MoS2 nanocomposite, as well as individual graphene and molybdenum disulphide (MoS2) film has been done through a liquid phase exfoliation method using chitin as a binder. All of the developed films are integrated as a passive Q-switcher in an Erbium doped fiber laser. The graphene-MoS2 nanocomposite based passive Q-switcher is generated by a pulsed fiber laser with the shortest width of 1.63 µs and the highest signal to noise ratio of 51.01 dB. The graphene-MoS2 nanocomposite films show a better saturable absorption response compared to an individual graphene-chitin and MoS2-chitin based passive Q-switcher.