OPTICAL ANALYSIS SYSTEM AND METHOD

摘要

An optical system comprising: a nonlinear material having a ferroelectric domain structure, the nonlinear material capable of converting first and second optical signals respectively to first and second frequency-converted optical signals; and alignment means for respectively aligning the first and second optical signals such that they propagate collinearly, but in opposite directions, through the nonlinear medium to obtain a overlap region in the nonlinear material where the first and second optical signals overlap, wherein the nonlinear material being capable of converting the first and second optical signals to a third frequency converted optical signal in the overlap region; wherein the third optical frequency generated by the nonlinear material propagates in a direction that is either oblique or transverse to the propagation direction of both the first and second optical signals.