B. Deboo et al., Multichannel conical emission and parametric and nonparametric nonlinear optical processes in ytterbium vapor, J OPT SOC B, 18(5), 2001, pp. 639-645
Collimated and conical emissions that appear when Yb vapor is illuminated b
y light pulses at 262 nm (near the one-photon Yb 6s(2 1)S(0) --> 6s7p P-3(1
) transition) are experimentally investigated. Conical emission is observed
at multiple wavelengths. Parametric and nonparametric nonlinear optical pr
ocesses are studied by investigation of the spatial distribution of generat
ed light and the efficiency of light generation as a function of the incide
nt light frequency. (C) 2001 Optical Society of America.