Patent ID: 8649404

Claim:
A laser providing a frequency doubled output operating in continuous wave regime, the laser comprising: a semiconductor diode pump laser providing a pump beam at a selected wavelength and a microchip laser cavity disposed to receive the pump beam, the laser cavity comprising: two mirrors, each mirror defined by a coated surface reflective at the laser fundamental wavelength; a solid-state gain element pumped by the semiconductor diode pump laser and disposed between the two mirrors; and a bulk, periodically poled nonlinear frequency doubling crystal disposed between the two mirrors, the crystal being selected from the group consisting of: periodically poled MgO-doped LiNbO 3 , periodically poled MgO-doped LiTaO 3 , periodically poled ZnO-doped LiNbO 3 , periodically poled ZnO-doped LiTaO 3 , periodically poled stoichiometric LiNbO 3 , and periodically poled stoichiometric LiTaO 3 ; and an external electro-optic crystal rotating its output beam polarization, the crystal being selected from the group consisting of: periodically poled MgO-doped LiNbO 3 , periodically poled MgO-doped LiTaO 3 , periodically poled ZnO-doped LiNbO 3 , periodically poled ZnO doped LiTaO 3 , periodically poled stoichiometric LiNbO 3 , and periodically poled stoichiometric LiTaO 3 .