Radiation forces exerted on a microsphere by a broadband Gaussian beam

Authors

Kristine Faith Roque ⋅ PH National Institute of Physics, University of the Philippines Diliman
Paul Leonard Atchong Hilario ⋅ PH National Institute of Physics, University of the Philippines Diliman
Giovanni Tapang ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We present the calculation of radiation forces generated by the interaction of a polystyrene microsphere with a Gaussian beam with a broad frequency spectrum. Increasing the spectral bandwidth of the Gaussian filter while keeping the incident power constant lowers the net axial force by about one order of magnitude for all central wavelengths but are still sufficient to overcome forces that result to Brownian motion. Restoring axial forces directed towards the focus are achieved for -2μm < z₀ < 0μm and z₀ > 4 μm.

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Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2012-PA-18

Section

Poster Session PA

Published

2012-10-22

How to Cite

[1]

KF Roque, PL Atchong Hilario, and G Tapang, Radiation forces exerted on a microsphere by a broadband Gaussian beam, Proceedings of the Samahang Pisika ng Pilipinas 30, SPP2012-PA-18 (2012). URL: https://proceedings.spp-online.org/article/view/SPP2012-PA-18.