Study of non-linear optical phase conjugation in Ca by resonant degenerate four-wave mixing via bound excited states

摘要: We have studied the optical phase conjugation (OPC) effect in Ca vapour by using resonant degenerate four-wave mixing (DFWM) technique. The was through first excited state of Ca, 4s4p 1 P1. depen- dence reflectivity on density, buffer gas pressure and pump beams intensity investigated. influence strong linear absorption taken into account a theoretical model that led to satisfactory interpretation experimental results. A maximum 46% measured under optimized conditions. also high-lying bound states 4p 23 P 0 , 2 . as high for state. oscillator strength demonstrated experimentally interpreted with help simple model.