title: Widely tunable third-harmonic generation in a tellurite microstructured optical fiber.
abstract: We designed and fabricated a tellurite (76.5TeO(2)-6Bi(2)O(3)-11.5Li(2)O-6ZnO, mol. %) microstructured optical fiber (TMOF) with four air holes for widely tunable third-harmonic generation (THG). The loss of the TMOF is ~0.2 dB/m at 1550 nm. Widely tunable THG from ~567 to 902 nm is obtained when the TMOF is pumped by an optical parametric oscillator with the pump wavelength changing from ~1700 to 2700 nm. The mechanism of THG in this work is further investigated through the third-harmonic signal pattern, which is due to the high nonlinearity of the TMOF and the high pump power, not from the phase-matching process between the fundamental mode and the high-order TH mode.
authors.forename: Tonglei
authors.initials: T
authors.lastname: Cheng
authors.forename: Dinghuan
authors.initials: D
authors.lastname: Deng
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Xue
authors.forename: Morio
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Hiroshige
authors.initials: H
authors.lastname: Tezuka
authors.forename: Takenobu
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yasutake
authors.initials: Y
authors.lastname: Ohishi