The schemes of optical bistable systems employing the dynamic holographic gratings are analysed. A counter-propagating four-wave mixing in a medium with cubic nonlinesrity and local response is used for dynamic grating recording.
I. L. Rubtsova,
A. I. Khiznyak,
"Bistability Of Reflection From Optical Systems With Dynamic Gratings", Proc. SPIE 1183, Holography '89, (12 April 1990); doi: 10.1117/12.963815; https://doi.org/10.1117/12.963815