Multiple filamentation generated by focusing femtosecond laser with axicon |
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Authors: | Sun Xiaodong Gao Hui Zeng Bin Xu Shengqi Liu Weiwei Cheng Ya Xu Zhizhan Mu Guoguang |
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Institution: | Institute of Modern Optics, Nankai University, Key Laboratory of Optical Information Science and Technology, Ministry of Education, Tianjin, 300071 China. |
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Abstract: | Multiple filamentation has been observed when focusing a femtosecond laser pulse into a methanol solution with an axicon. It is found that multiple long filaments are located on the central spot and ring structures of the quasi-Bessel beam created by the axicon. Since the quasi-Bessel profile is determined by the axicon properties, the axicon has been suggested as a simple optics to control multiple filaments. |
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