Systems and methods for shifting a position of one or more optical elements are disclosed. In an embodiment, a system may include a housing having a chamber formed therein, at least one non-linear crystal disposed in the chamber, the non-linear crystal configured to receive at least one incident signal and to convert a wavelength of at least a portion of the incident signal, and at least one shape memory alloy element disposed such that thermal or electrical energy applied to the shape memory alloy causes movement of the non-linear crystal.
