Refractive index

First mode-locked laser using Yb:Ca3TaGa3Si2O14 crystal achieves 50 fs pulses with high efficiency, demonstrating potential for ultrafast solid-state laser systems.

Investigation of pump-induced wavelength tuning mechanism in a Lyot filter using polarization-maintaining ytterbium and erbium-doped fibers, achieving single-frequency operation.

Study reveals terahertz laser pulses create bright solitons below and dark solitons above a critical frequency in negative index meta-materials, with intensity-dependent bandwidth.