Monoclinic bismuth vanadate nanoparticles as saturable absorber for Q-switching operations at 1.3 and 2 μm. (1st July 2022)

• Record Type: Journal Article
• Authors: Zhang, Cong; Zheng, Liren; Chu, Hongwei; Pan, Han; Hu, Yutao; Li, Daozhi; Dong, Li; Zhao, Shengzhi; Li, Dechun
• Is Part Of: Applied physics express. Volume 15:Number 7(2022)
• Publication Date: 2022-07-01
• Subjects: saturable absorber -- m-BiVO4 nanoparticles -- nonlinear optical properties -- Q-switching; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac737a
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We synthesized monoclinic bismuth vanadate (m-BiVO4 ) nanoparticles via the sol-gel method. The modulation depths were 20.1% and 8.8% at 1.34 and 2 μ m, respectively. Passively Q-switched bulk lasers with m-BiVO4 saturable absorber were demonstrated operating at 1.34 and 2 μ m. At 1.34 μ m, the shortest pulse duration was 355 ns with a pulse repetition frequency of 242.6 kHz, while in a Tm-doped bulk laser at ∼2 μ m, the minimum pulse width was 540 ns with a pulse repetition rate of 53.7 kHz. Results showed that m-BiVO4 possessed good broadband optical nonlinearities and can be applied for the optical pulse generation.