標題: | The formation of quasi-nondiffracting focused beams with second-harmonic generation of flower Laguerre-Gaussian modes |
作者: | Lin, Y. C. Huang, K. F. Chen, Y. F. 電子物理學系 Department of Electrophysics |
公開日期: | 1-十一月-2013 |
摘要: | We theoretically demonstrate that the second-harmonic generation of a flower Laguerre-Gaussian mode can be exploited to form a quasi-nondiffracting focused beam. It is verified that the product of donut Laguerre-Gaussian modes with opposite topological charges leads to the formation of the quasi-nondiffracting focused beam. The divergence of the quasi-nondiffracting focused beam is numerically confirmed to be root 2l + 1 times less than that of the Gaussian TEM00 mode with the same beam waist parameter, where l is the azimuthal index of the flower Laguerre-Gaussian mode. In an experiment, we employ a diode-pumped solid-state laser resonator with intracavity second-harmonic generation to realize the formation of the quasi-nondiffracting focused beams. |
URI: | http://dx.doi.org/10.1088/1054-660X/23/11/115405 http://hdl.handle.net/11536/22954 |
ISSN: | 1054-660X |
DOI: | 10.1088/1054-660X/23/11/115405 |
期刊: | LASER PHYSICS |
Volume: | 23 |
Issue: | 11 |
結束頁: | |
顯示於類別: | 期刊論文 |