We identify an aerosol of dielectric particles as a broadband, low-power nonlinear-optics medium. We demonstrate theoretically that a room-temperature volume of 5-µm-radius glass spheres will exhibit a third-order susceptibility in the visible equal to ~10ƒ esu, where ƒ is the volumetric packing fraction of the spheres. The response of the system is broadband throughout the visible, and the nonlinear-optic gain coefficient is shown to exceed the extinction coefficient because of scattering at pump-power levels on the order of 0.3 W/cm2. Two techniques for levitation of the aerosol are quantitatively evaluated.
© 1980 Optical Society of America
A. Jay Palmer, "Nonlinear optics in aerosols," Opt. Lett. 5, 54-55 (1980)