%0 Journal Article
%T Influence of spherical aberrations on fundamental mode beam quality under different laser resonators<br>
%A Xiang Zhen
%A Hu Miao
%A Ge Jian-Hong
%A Zhao Zhi-Gang
%A Wang Sh
%A Liu Chong
%A Chen Jun
%A <br>
%J 中国物理 B
%D 2009
%I 
%X Spherical aberrations of the thermal lens of the active media are severe when solid state lasers are strongly pumped. The fundamental mode profile deteriorates due to the aberrations. Self-consistent modes of a resonator with aberrations are calculated by using the Fox--Li diffraction iterative algorithm. Calculation results show that the aberration induced fundamental mode beam quality deterioration depends greatly on the resonator design. The tolerance of a flat--flat resonator to the aberration coefficient is about 30$\lambda $ in the middle of stability, where $\lambda $ is the wavelength of laser beam. But for a dynamically stable resonator, 2$\lambda $ of spherical aberration will create diffraction loss of more than 40{\%}, if inappropriate design criteria are used. A birefringence compensated laser resonator with two Nd:YAG rods is experimentally studied. The experimental data are in quite good agreement with simulation results.
%K spherical aberration
%K fundamental mode beam quality
%K diffraction loss
%K resonators design<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=98DE28D7660737FF4513F2B927AD4AA5&yid=DE12191FBD62783C&vid=13553B2D12F347E8&iid=DF92D298D3FF1E6E&sid=D75E56D700503C25&eid=B55917F5071FEB5E&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0