Chinese Optics Letters, 2017, 15 (10): 101402, Published Online: Jul. 19, 2018
Graphene oxide-COOH as a new saturable absorber for both Q-switching and mode-locking fiber lasers Download: 969次
Abstract
Graphene oxide carboxylic acid (COOH), a novel two-dimensional (2D) layered material with its unique optical and electronic properties, is discovered to exhibit the saturation of optical absorption under laser illumination. Applying the liquid-phase exfoliation method, we prepare graphene oxide-COOH dispersions with deionized water and fabricate graphene oxide-COOH polyvinyl alcohol polymer composite film. We further obtain stable Q-switching pulse and mode-locked laser operation with a 22.7 MHz repetition rate and a 1.5 ps pulse duration by incorporating the graphene oxide-COOH-based saturable absorbers into the all-fiber erbium-doped fiber laser cavity. The experimental results show that the proposed graphene oxide-COOH material can act as an effective absorber for pulsed fiber lasers, which demonstrate potential applications in the area of ultrafast optics.
Fengyan Zhao, Yishan Wang, Yonggang Wang, Hushan Wang, Yajun Cai. Graphene oxide-COOH as a new saturable absorber for both Q-switching and mode-locking fiber lasers[J]. Chinese Optics Letters, 2017, 15(10): 101402.