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In this paper, the light pressure force in low and high intensity laser fields is derived. The exact numerical results of forces F n ∥(n=0,1,2,3,4,5,6...) through the matrix continued fraction method are presented. At low intensity field (G=1), the spatially averaged force F 0 ∥ gives a cooling effect at the negative detuning. At high intensity (G=64), the effects of the forces with higher order (n≥2) appear and the contributes of the forces with odd or even order are opposite. It is great different from no high order force at low intensity.
In this paper, the light pressure force in low and high intensity laser fields is derived. The exact numerical results of forces F n ∥ (n = 0,1,2,3,4,5,6 ...) through At low intensity field (G = 1) , the spatially averaged force F 0 ∥ gives a cooling effect at the negative detuning. At high intensity (G = 64), the effects of the forces with higher order (n ≧ 2) appear and the contributes of the forces with odd or even order are opposite. It is great different from no high order force at low intensity.