Is there any laser that can emit pulse, frequency modulation (wavelength modulation is also acceptable) laser signals, please note that it is not a continuous laser signal, and the duty cycle cannot b

Is there any laser that can emit pulse, frequency modulation (wavelength modulation is also acceptable) laser signals, please note that it is not a continuous laser signal, and the duty cycle cannot be 100

Yes, I know two methods:

1. Use Nd-YAG laser as the pump source (fixed wavelength. Pulse) to pump the dye laser (the output wavelength can be Changes according to the dye composition, the output is still a pulse signal) is more expensive, but the output energy is high

2. Ar ion laser, continuous laser, the output wavelength is adjustable, and then chopped with a chopper. into pulsed light. Relatively cheap, but low energy output.