Research on mechanism of Pr:YLF Laser based on multi-wavelength master-slave pulse modulation

This study presents what we believe to be the first Pr:YLF laser that directly generates a visible-band triple-wavelength double-pulse laser. A theoretical model was developed to elucidate the mode oscillation mechanism, integrating step-loss control with gain modulation across oscillation modes. The maximum output achieved was 76 mW, with a 12.3% slope efficiency at 10 kHz for the triple-wavelength (604, 607, and 639 nm) double-pulse laser. The master and slave pulse widths were 162 ns and 241 ns, respectively, with an adjustable pulse interval of 30–40 µs. Simulation and experimental results confirmed the model’s effectiveness, presenting a streamlined method for visible triple-wavelength double-pulse laser generation.