中国物理B ›› 2013, Vol. 22 ›› Issue (6): 64101-064101.doi: 10.1088/1674-1056/22/6/064101
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
徐一清, 周国泉, 汪小刚
Xu Yi-Qing (徐一清), Zhou Guo-Quan (周国泉), Wang Xiao-Gang (汪小刚)
摘要: Analytical expressions for the three components of the nonparaxial propagation of a Hermite-Laguerre-Gaussian (HLG) beam in uniaxial crystal orthogonal to the optical axis are derived. The intensity distribution of an HLG beam and its three components propagating in a uniaxial crystal orthogonal to the optical axis are demonstrated by numerical examples. Although the y and z components of an HLG beam in the incident plane are both equal to zero, they emerge upon propagation inside the uniaxial crystal. Moreover, the beam profile of the x component is relatively stable and the beam profiles of the y and z components have the same evolution law. If the ratio of the extraordinary refractive index to the ordinary refractive index is larger than unity, the beam profile of the HLG beam is elongated in the x direction and generally rotates clockwise. Otherwise, the beam profile of the HLG beam is elongated in the y direction and generally rotates anticlockwise. This research is beneficial to the optical trapping and nonlinear optics involved in the rotation of the beam profile.
中图分类号: (Particle beam profile, beam intensity)