Solid-state laser system

A solid-state laser system, comprising:

• a first solid-state laser unit configured to output first pulsed laser light with a first wavelength;
• a second solid-state laser unit including a semiconductor optical amplifier and configured to output second pulsed laser light with a second wavelength;
• a wavelength conversion system where the first pulsed laser light and the second pulsed laser light enter;
• and
• a controller coupled to the first solid-state laser unit and the semiconductor optical amplifier, and configured to control the first solid-state laser unit and the semiconductor optical amplifier to cause the first pulsed laser light and the second pulsed laser light to be continuously outputted from the first solid-state laser unit and the second solid-state laser unit, respectively, the controller being configured to control the first solid-state laser unit and the semiconductor optical amplifier to cause, while a burst signal from an external unit is on, the first pulsed laser light and the second pulsed laser light to enter the wavelength conversion system at a coincidental timing, thereby causing the wavelength conversion system to output third pulsed laser light with a third wavelength that is converted from the first wavelength and the second wavelength, and being configured to control the first solid-state laser unit and the semiconductor optical amplifier to cause, while the burst signal is off, the first pulsed laser light and the second pulsed laser light to enter the wavelength conversion system at different timings from each other, thereby preventing the wavelength conversion system from outputting the third pulsed laser light, a difference between the different timings being equal to or greater than sum of a pulse width of the first pulsed laser light and a pulse width of the second pulsed laser light.