2017.06.16
Changing the color of laser light on the femtosecond time scale
Changing the color of laser light on the femtosecond time scale — How BiCoO3 achieves second harmonic generation —
Using femtosecond visible and terahertz (THz) pulses as external perturbations, scientists at Tokyo Institute of Technology and Institute for Integrated Cell-Material Sciences, Kyoto University have investigated the second harmonic generation effect in photoexcited BiCoO3. Driven by the THz pulse, this research highlights the importance of orbital excitation in the Co3+ ion and provides clues for improving the performance of nonlinear optical phenomena in nonlinear crystals on the femtosecond time scale.
