Single-layer graphene saturable absorber for diode-pumped passively Q-switched Tm:KLu(WO4)2 laser at 2 μm. (29th July 2015)

• Record Type: Journal Article
• Authors: Serres, Josep M; Mateos, Xavier; Griebner, Uwe; Petrov, Valentin; Aguiló, Magdalena; Díaz, Francesc
• Is Part Of: Laser physics letters. Volume 12:Number 9(2015:Sep.)
• Publication Date: 2015-07-29
• Subjects: graphene -- double tungstates -- thulium lasers -- Q-switched lasers; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/9/095802
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We demonstrate a diode-pumped passively Q-switched Tm-laser emitting near 2 μ m using single-layer graphene as the saturable absorber. The commercially available graphene samples were characterized by Raman spectroscopy and pump–probe measurements indicating high quality layered graphene. The Q-switched Tm:KLuW laser generated maximum pulse energy of ~1 μ J with a slope efficiency of 11%. The maximum average output power was 34 mW at a repetition rate of 35 kHz.