A. Rapaport et al., Visible light emission from dyes excited by simultaneous absorption of twodifferent frequency beams of light, APPL PHYS L, 74(3), 1999, pp. 329-331
Emission of visible light by dyes in both liquid and polymer hosts is repor
ted when excited by simultaneous absorption of infrared light from two diff
erent wavelength sources. By moving the intersection point of these two bea
ms about within the volume of the dye-doped medium, one can create a true,
real-time, three-dimensional display. (C) 1999 American Institute of Physic
s. [S0003-6951(99)02903-4].