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Updated: Jun 2, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
Cerenkov third-harmonic generation via cascaded χ(2) processes in a periodic-poled LiTaO₃ waveguide
Changdong Chen1, Jun Lu, Yanhua Liu
1National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093 China.
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.

