title: Cerenkov third-harmonic generation via cascaded χ(2) processes in a periodic-poled LiTaO₃ waveguide.
abstract: We report a type of quasi-phase-matched (QPM) Cerenkov third-harmonic generation (CTHG) in a periodic-poled LiTaO₃ waveguide. The CTHG results from a guided-to-guided second-harmonic generation cascaded with a guided-to-radiated sum-frequency generation (SFG) in the waveguide. In the guided-to-radiated SFG process, nonlinear interactions with participating and nonparticipating reciprocal vectors would lead to different CTHG radiations. In addition, the power and temperature detuning characters of QPM CTHG were studied. Theoretical predictions were in good agreement with experimental results.
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093 China.
authors.forename: Changdong
authors.initials: C
authors.lastname: Chen
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Liu
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Hu
authors.forename: Lina
authors.initials: L
authors.lastname: Zhao
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.forename: Ye
authors.initials: Y
authors.lastname: Yuan
authors.forename: Shining
authors.initials: S
authors.lastname: Zhu