A novel method to generate a collimated hollow-laser-beam (HLB) by only a single axicon is proposed. With some reasonable assumptions, the radial light intensity distribution is calculated in detail by diffraction integral theory. The result of numerical simulation shows that this method is valid. Compared with other methods of generating HLB, this scheme is extraordinarily simple in principle and can be utilized experimentally to construct a light trap in atomic fountain for convenience.
© 2005 Chinese Optics Letters
Yong Qian and Yuzhu Wang, "Theoretical analysis of a collimated hollow-laser-beam generated by a single axicon using diffraction integral," Chin. Opt. Lett. 2, 232-234 (2004)