AMPLITUDE SQUEEZING FROM SINGLY RESONANT FREQUENCY-DOUBLING LASER

We analyze amplitude squeezing from a singly resonant frequency-doubli ng laser oscillating at a single frequency, In this laser system, the cavity loss depends on the intensity of the oscillating fundamental fi eld, so that conventional analyses based on a mean-field approximation become invalid in a highly pumped regime, To avoid this inconvenience , we consider spatial evolution of fields both in a laser medium and i n a nonlinear crystal, It is predicted for the first time that a combi nation of excess nonlinearity and modest laser saturation can increase the output noise, We propose novel indices to evaluate the possible n oise enhancement and suggest a design rule for squeezed light generati on.