Patent ID: 8243764
Filing Date: 2012-08-14
Classification: G02F,H01S

Abstract:
1. A system comprising: a laser means for generating input light; a nonlinear crystal having a first face end and a second face end opposite to the first face end, a first length portion and a second length portion; wherein the nonlinear crystal is disposed and sized to receive the input light at the first face end for converting the input light into frequency converted light and for providing the frequency converted light at the second face end; wherein the nonlinear crystal is configured so that the first length portion of the nonlinear crystal is phase matching for the input light and the frequency converted light, and the second length portion of the nonlinear crystal is phase mismatching for the input light and the frequency converted light, so that the input light and frequency converted light within the first length portion are in-phase and so that the input light and frequency converted light are out of phase with one another within the second length portion thereby lessening the power density of light exiting the second end face; a first temperature controlling controllable component for configuring the first length portion of the nonlinear crystal to be phase matching for the input light and the frequency converted light; and a phase mismatcher for configuring the second length portion of the nonlinear crystal to be phase mismatching for the input light and the frequency converted light, wherein the phase mismatcher comprises a second temperature controlling component.