Fz [ENI (Fx, Fz) 00050.100156200250300050.100.150.200260300050.100.15020026030 Fig. 10 Plots of the net force components (Fr, F), computed with Method l, for a glass micro- bead (d=460nm, n= 1.5) versus the offset from the focal point. The host medium is water (ninc 1.33), 20= 532nm, the objective lens NA is a 1. 4, and the incident beam s power is P=1.0W. Top row: x-polarization, bottom row. y-polarization. The lateral trapping force Fr at the center of the small rectangle in the case of x-polarization is weaker than the corresponding Fr in the case of y-polarization(ratio=0.92) (Fx) 06001061502002036600100150200203000601601502002030 Fig. Il Plots of the net force components(Fx, Fs), computed with Method l, for a glass micro- bead(d=460nm, n= 1.5)versus the offset from the focal point. The host medium is water (ninc = 1.33), 20= 532nm, the objective lens NA is a 1.4, and the incident beam's power is p row: x-polarization, bottom row y-polarization. The lateral trapping force F at the center of the small rectangle in the case of x-polarization is stronger than the corresponding Fx in the case of y-polarizat #67575-$15.00USD Received 15 February 2006, revised 7 April 2006, accepted 10 April 2006 (C)2006OSA 17 April 2006/Vol 14, No 8/OPTICS EXPRESS 3670Fx Fz (Fx,Fz) Fig. 10. Plots of the net force components (Fx,Fz), computed with Method II, for a glass micro￾bead (d = 460nm, n = 1.5) versus the offset from the focal point. The host medium is water (ninc = 1.33), λ0 = 532nm, the objective lens NA is ≈ 1.4, and the incident beam’s power is P = 1.0W. Top row: x-polarization, bottom row: y-polarization. The lateral trapping force Fx at the center of the small rectangle in the case of x-polarization is weaker than the corresponding Fx in the case of y-polarization (ratio = 0.92). Fx Fz (Fx,Fz) Fig. 11. Plots of the net force components (Fx,Fz), computed with Method III, for a glass micro￾bead (d = 460nm, n = 1.5) versus the offset from the focal point. The host medium is water (ninc = 1.33), λ0 = 532nm, the objective lens NA is ≈ 1.4, and the incident beam’s power is P = 1.0W. Top row: x-polarization, bottom row: y-polarization. The lateral trapping force Fx at the center of the small rectangle in the case of x-polarization is stronger than the corresponding Fx in the case of y-polarization (ratio = 1.2). #67575 - $15.00 USD Received 15 February 2006; revised 7 April 2006; accepted 10 April 2006 (C) 2006 OSA 17 April 2006 / Vol. 14, No. 8 / OPTICS EXPRESS 3670