Widely-tunable mid-infrared (2.6–5 μm) picosecond vortex laser. (1st October 2022)

• Record Type: Journal Article
• Authors: Jashaner, Dana; Zhou, Yuxia; Yusufu, Taximaiti
• Is Part Of: Applied physics express. Volume 15:Number 10(2022)
• Publication Date: 2022-10-01
• Subjects: optical vortices -- nonlinear optics -- optical parametric oscillator -- picosecond laser; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac92c1
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We report on a widely-tunable mid-infrared picosecond optical vortex laser source that employs a synchronously-pumped optical parametric oscillator optimized for mid-infrared emission up to 5 μ m. Vortex output with a continuously-tunable wavelength range of 2.6–5 μ m could be obtained simply by translating the MgO:PPLN crystal. At the maximum pump power of 15 W, the maximum idler output powers were measured as 3.7, 1.7, and 0.165 W at the wavelengths of 2.6, 3.8, and 5 μ m, respectively. The corresponding photon conversion efficiencies were estimated to be 60% at 2.6 μ m, 40% at 3.8 μ m, and 5.2% at 5 μ m.