標題: Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces
作者: Tung, J. C.
Liang, H. C.
Lin, Y. C.
Su, K. W.
Huang, K. F.
Chen, Y. F.
電子物理學系
電子工程學系及電子研究所
Department of Electrophysics
Department of Electronics Engineering and Institute of Electronics
關鍵字: laser modes;structured beams;Lissajous figures;orbital angular momentum
公開日期: 1-十二月-2014
摘要: We systematically explore the power scale-up and propagation evolution of Lissajous structured beams in a lowly Nd-doped YVO4 laser with the off-axis pumping scheme. We experimentally found that the average output power can be up to 1.0 W for the output transmission in the range of 1.8-10% at an incident pump power of 6.2 W. It is also found that when the output transmission is greater than 5%, the spatial coherence is considerably reduced to lead to a feature of broken Lissajous figures in transverse patterns. Moreover, transverse patterns varying with propagation direction are remarkably measured to manifest the 3D characteristics of Lissajous structured beams. We also employ the formula of coherent states to make a comparison with experimental observations and to reveal the transverse momentum density varying with propagation direction.
URI: http://dx.doi.org/10.1088/1612-2011/11/12/125806
http://hdl.handle.net/11536/123883
ISSN: 1612-2011
DOI: 10.1088/1612-2011/11/12/125806
期刊: LASER PHYSICS LETTERS
Volume: 11
Issue: 12
顯示於類別:期刊論文


文件中的檔案:

  1. 000345221300029.pdf