000.0$ $nm$, $h=000.0$ $nm$ and $\protect\sigma=00.0$ $nm$ along $OX$. The incident field is a $p$-polarized Gaussian beam with $W=0000$ $nm$ and $\protect\theta_ 0=00^o$. \[fig:prb0\](a): Horizontal force. \[fig:prb0\](b): Vertical force. Solid curves: $\protect\lambda= 000$ $nm$ (on resonance), broken curves: $\protect\lambda= 000$ $nm$ (off resonance). Thin 