FREQUENCY DOUBLER DIODE-STIMULATED SOLID-STATE LASER

摘要

PROBLEM TO BE SOLVED: To provide a frequency doubler diode-stimulated solid-state laser which can be improved not only in stabilization but also in output ability for the polarized light mode in a resonator. SOLUTION: An optical element 7 is set up in a resonant cavity which is positioned in front or back a type II frequency doubler nonlinear crystal 6 positioned after a laser crystal 5 and the crystal 5 in the resonant cavity and turns the polarization direction of each linear polarized beam component which is emitted along the crystal axis of the crystal 6 when a basic-wavelength beam passes through the optical element twice by 45 deg..