R. Gauderon et Cjr. Sheppard, Two-dimensional weak-object transfer functions in the scanning harmonic microscope, J MOD OPT, 47(7), 2000, pp. 1195-1202
The two-dimensional imaging properties of scanning harmonic microscopes are
considered. The two-dimensional weak-object transfer functions for non-con
focal (point source and large-area incoherent detector) and confocal (point
source and point detector) scanning harmonic microscopes are calculated. R
esults show that the harmonic microscopes are capable of super-resolution i
n that the spatial frequency cut-off is twice that for a microscope working
at the fundamental wavelength. Confocal scanning harmonic microscopes exhi
bit better resolution than the conventional type.