Experimental Evidence of an Optical Bistability Based on Self - Focusing

Optical bistability based on Self – Focusing of low power CW He-Ne laser radiation ,at the wavelength of 0.632m ,has been experimentally evidence in liquid CS2 using a new simple and effective technique. New experimental results supporting the hypothesis that optical bistability based on self –focusing of laser radiation occurs in liquid are present in this article. Mirrorless limiting mode is observed too.