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- Lee, Kang Soo
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Radiation forces on a microsphere in an arbitrary refractive index profile
- Author(s)
- Lee, Kang Soo, Yoon, Sang Youl, Lee, Kyung Heon, Kim, Sang Bok, Sung, Hyung Jin, Kim, Sang Soo
- Issued Date
- 2012-03
- Citation
- JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, v.29, no.3, pp.407 - 414
- Abstract
- ( The force equations describing the radiation forces on a microsphere in an arbitrary refractive index profile are derived here by using the photon-stream method in a ray-optics regime. A loosely focused Gaussian beam was employed as the radiating illumination beam. The radiation forces on a spherical microsphere were calculated in a time-varying refractive index profile. The refractive index profile of the surrounding medium was evaluated according to the concentration distribution obtained from the diffusion equation. The scattering and gradient forces on a microsphere were calculated for different refractive indices (1.22, 1.33, 1.43, and 1.59), and the radiation forces on a perfectly reflecting microsphere were calculated. The results were compared with previous results to validate the derivation. (C) 2012 Optical Society of America
- Publisher
- OPTICAL SOC AMER
- ISSN
- 0740-3224
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