Propagation properties of Lorentz beam in uniaxial crystals orthogonal to the optical axis |
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| Authors: | Jia Li Yanru Chen Shixue Xu Yongqing Wang Muchun Zhou Qi Zhao Yu Xin Feinan Chen |
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| Institution: | 1. School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region;2. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, United States;3. City University of New York Graduate School of Public Health and Health Policy, New York, United States |
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| Abstract: | The properties of Lorentz beams propagating in uniaxial crystals orthogonal to the optical axis are studied. The diffraction field components and effective beam sizes of the Lorentz beams are derived in analytical forms. Numerical results show that, upon propagating in uniaxial crystals, a Lorentz beam loses its initial Lorentz type distribution. Also, after propagating for sufficient distances, the transverse components would finally convert into a specific four-petal profile with an axial shadow, which may find applications in the optical trapping of particles. It also shows that the Lorentz beam parameters w0x, w0y and the ratios of refractive indices have strong influences on the diffraction field components and on the effective beam sizes when propagating in uniaxial crystals. |
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