%0 Journal Article
%T Propagation Properties of Ultrashort Pulsed Bessel-Gauss Beams with Constant Diffraction Length<br>等衍射长度超短脉冲贝塞耳-高斯光束的传输特性
%A (Institute of Laser Physics
%A Chemistry
%A Sichuan University
%A Chengdu
%A <br>邹其徽
%A 吕百达
%J 光子学报
%D 2006
%I 
%X The complex analytical signal representation was applied to study the free-space propagation of ultrashort pulsed Bessel-Gauss beams with constant diffraction length. Closed-form expressions were derived and analyzed both theoretically and numerically. It is shown that within the diffraction-free range, the spreading of transversal intensity distributions of ultrashort pulsed Bessel-Gauss beams is small, whereas beyond this range a remarkable spreading appears. But, within the diffraction-free range there is still a broadening of on-axis pulse forms. With increasing propagation distance, the on-axis blue shift increases monotonously and then reaches gradually its asymptotic value. The off-axis spectral shift changes from the blue shift to the red one as the transversal distance increases.
%K Laser optics
%K Ultrashort pulsed Bessel-Gauss beam
%K Constant diffraction length
%K Complex analytical signal representation
%K Spectral shift<br>激光光学
%K 超短脉冲贝塞耳-高斯光束
%K 等衍射长度
%K 复解析信号
%K 光谱移动
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=B89D035F1B85240F&yid=37904DC365DD7266&vid=6209D9E8050195F5&iid=94C357A881DFC066&sid=4C49EFA0A53C9DF0&eid=762CFFBBDED11937&journal_id=1004-4213&journal_name=光子学报&referenced_num=8&reference_num=17