Nonlinear mirror mode-locked dual-wavelength vortex laser generation

In this study, we first demonstrate dual-wavelength picosecond optical vortices that are directly generated in an all-solid-state laser. Multiple-wavelength superfast vortices are obtained based on nonlinear mirror modelocking. The average output powers of the vortex laser of the fundamental and harmonic waves reach 2.6 W and 116 mW, respectively. The repetition rate is 97.16 MHz, and the pulse width of the fundamental wave is 23.4 ps, corresponding to a maximum pulse energy of approximately 26.5 nJ. These results provide significant insights into compact ultrafast optical vortices with multiple wavelengths.

Automated summary

In this study, dual-wavelength picosecond optical vortices are generated directly in an all-solid-state laser. Multiple-wavelength superfast vortices are achieved through nonlinear mirror modelocking. The vortex laser has an average output power of 2.6 W for the fundamental wave and 116 mW for the harmonic wave. The repetition rate is 97.16 MHz, and the pulse width of the fundamental wave is 23.4 ps, with a maximum pulse energy of approximately 26.5 nJ. These results provide valuable insights into compact ultrafast optical vortices with multiple wavelengths.