Vectorial structure of helical hollow Gaussian beams in the far field

详细信息    查看全文

• 作者：Huiqin Tang ; Xuguang Li ; Guoquan Zhou ; Kaicheng Zhu
• 关键词：Beam propagation ; Vectorial structure ; Helical hollow Gaussian beam (HHGB) ; Far field
• 刊名：Optics Communications
• 出版年：2009
• 出版时间：15 February 2009
• 年：2009
• 卷：282
• 期：4
• 页码：478-481
• 全文大小：227 K

文摘

The analytical vectorial structure of helical hollow Gaussian beam (HHGB) is investigated in the far field based on the vector plane wave spectrum and the method of stationary phase. The energy flux distributions of HHGB in the far-field, which is composed of TE term with the electric field transverse to the propagation axis, and TM term with the magnetic field transverse to the propagation axis, are demonstrated. The physics pictures of HHGB is illustrated from the vectorial structure, which is important to understand the theoretical aspects of both scalar and vector HHGB propagation.