Figure 1

Remarkable agreement between analytical (Eq. (1)) and numerical (Eq. (2)) approaches is demonstrated. Gradient force (red) and scattering and absorption force (blue) calculated by the analytical expression Eq. (1) (symbols) and numerical approach Eq. (2) (solid lines), respectively. The 300 nm diameter particle of refractive index 1.59 is immersed in water (refractive index = 1.33). The wavelength is 1064 nm.