a substrate;

an excitation light generation element for emitting a plurality of excitation lights, wherein the excitation light generation element includes a plurality of surface emitting laser elements having a pair of first reflection layers and an activation layer disposed between the pair of first reflection layers, and wherein the surface emitting laser elements are disposed on the substrate so that the surface emitting laser elements provide a surface emitting laser array; and

a light converter having a pair of second reflection layers and a solid laser medium layer disposed between the pair of second reflection layers, wherein the pair of second reflection layers and the solid laser medium Layer provide a resonator, wherein

the solid laser medium layer generates a plurality of lights having different peak wavelengths by receiving the excitation lights,

the light converter is disposed on an output surface of the excitation light generation element,

the light converter outputs the output lights,

each wavelength of the output light is different from a wavelength of the excitation light,

the resonator is divided into a plurality of resonator regions according to a structure of the second reflection layers,

the resonator regions resonate at different peak wavelengths of the output lights, respectively, so that the resonator regions having the same solid laser medium layer respectively output the output lights having different wavelenghts,

the pair of second reflection layers includes an output side second reflection layer and an input side second reflection layer,

the output side second reflection layer includes a plurality of reflection films, each of which has a maximum reflectivity at the peak wavelength of the corresponding output light,

the reflection films in the output side second reflection layer are stacked from the solid laser medium layer in a predetermined output-side peak wavelength order,

the input side second reflection layer includes a plurality of reflection films, each of which has a maximum reflectivity at the peak wavelength of the corresponding output light,

the reflection films in the input side second reflection layer are stacked from the solid laser medium layer in a predetermined input-side peak wavelength order, which is opposite to the output-side peak wavelength order, and

an utmost outer reflection film of the stacked reflection films of the output side second reflection layer in each resonator region has a maximum reflectivity at a peak wavelength of the corresponding output light of the resonator region the peak wavelength of which is equal to a peak wavelength of an utmost outer reflection film of the stacked reflection films of the input side second reflection layer in the resonator region.