Figure 1 | Scientific Reports

Figure 1

From: Mutually guided light and particle beam propagation

Figure 1

Schematic of the optical forces that the particles experience in the region of large light intensity gradient. \(U_{\mathrm{max}}=\alpha 'I_0/(2c\varepsilon _0)\) is the maximum potential amplitude that is dependent on the maximum light intensity, \(I_0\), and the beam radius, \(w_0\). Note the scattering force has two contributions: absorption in the direction of the incoming photon and spontaneous emission resulting in a momentum change in a random direction.

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