| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1542439 | Optics Communications | 2006 | 7 Pages |
Abstract
A method of more precise determination of the focal length of equivalent thermal lens (TL) is presented in this paper. The method is based on the diffraction theory of aberrations. By numerically calculating the optical path difference (OPD) distribution and the Strehl ratio, the focal lengths for “top-hat” pumping and Gaussian pumping are obtained and the equations for the focal lengths are presented by curve fitting. Also the equations for average pump radii are presented. The experiment on a fiber-coupled LD pumped Nd:YAG laser is carried out. The experimental results verify the validity of the method.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Shuzhen Fan, Xingyu Zhang, Qingpu Wang, Shutao Li, Shuanghong Ding, Fufang Su,