Patent ID: 8416832

Claim:
A solid state laser device with switchable wavelength, the device having a laser cavity and comprising: two resonator end mirrors disposed within the laser cavity; a solid state gain medium disposed between the resonator end mirrors, said solid state gain medium being selected to emit optical radiation at a first wavelength in a green wavelength region with a first polarization and at a second wavelength with a second polarization different from said first polarization, when optically or electrically pumped, and a polarizing device disposed within the laser cavity, said polarizing device being adjustable at least between said first and said second polarization, wherein the two resonator end mirrors implement lasing of the solid state laser at said first wavelength when the polarizing device is adjusted to the first polarization, and the two resonator end mirrors implement lasing at said second wavelength when the polarizing device is adjusted to the second polarization, wherein said solid state gain medium also emits optical radiation with at least one third wavelength different from said first and second wavelengths when optically or electrically pumped, and wherein said end mirrors inhibit lasing at said at least one third wavelength.