Vectorial Nonparaxial Four-Petal Gaussian Beams and Their Propagation in Free Space
GAO Zeng-Hui1,2 , Lü Bai-Da2
1 Institute of Optoelectronic Information, Yibin University, Yibin 644000
2 Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064
Vectorial Nonparaxial Four-Petal Gaussian Beams and Their Propagation in Free Space
GAO Zeng-Hui1,2 ;Lü Bai-Da2
1 Institute of Optoelectronic Information, Yibin University, Yibin 644000
2 Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064
关键词 ：
41.85.Ew ,
42.25.Bs ,
42.60.Jf
Abstract ： The vectorial nonparaxial four-petal Gaussian beam (FPGB) is introduced. The closed-form propagation expressions for the free-space propagation of FPGBs are derived and their more general applicable advantages are illustrated analytically and numerically. Some special interesting cases, in particular the paraxial one, are discussed. It is found that the parameter f =1/kw0 with the k being the wave number and w0 being the waist width plays a crucial role in determining the nonparaxiallity of FPGBs. For small values of the f parameter the paraxial approximation is allowable. In the nonparaxial regime the beam order n additionally affects the vectorial and nonparaxial behaviour of FPGBs.
Key words ：
41.85.Ew
42.25.Bs
42.60.Jf
出版日期: 2006-08-01
:
41.85.Ew
(Particle beam profile, beam intensity)
42.25.Bs
(Wave propagation, transmission and absorption)
42.60.Jf
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
引用本文:
GAO Zeng-Hui;Lü Bai-Da. Vectorial Nonparaxial Four-Petal Gaussian Beams and Their Propagation in Free Space[J]. 中国物理快报, 2006, 23(8): 2070-2073.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I8/2070
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2006, Vol. 23 
