title: Widely-tunable vortex output from a singly resonant optical parametric oscillator.
abstract: We demonstrated a widely tunable 1-μm optical vortex laser formed from a 0.532-μm optical vortex pumpedoptical parametric oscillator with a singly-resonant cavity configuration employing cascaded non-critical phase-matching LiB₃O₅ crystals. With this system, the topological charge of the pump beam can be selectively transferred to the signal or idler output, and a vortex output in the wavelength range of 850-990 nmor 1130-1300 nm could be obtained.A maximum signal vortex output energy of 0.9 mJ was achieved, corresponding to an optical efficiency of 10%.
authors.forename: Aizitiaili
authors.initials: A
authors.lastname: Abulikemu
authors.forename: Taximaiti
authors.initials: T
authors.lastname: Yusufu
authors.forename: Roukuya
authors.initials: R
authors.lastname: Mamuti
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Miyamoto
authors.forename: Takashige
authors.initials: T
authors.lastname: Omatsu