Ultrashort-pulsed truncated polychromatic Bessel-Gauss beams
Ultrashort-pulsed truncated polychromatic Bessel-Gauss beams
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DOI：
10.1364/oe.16.001077
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发表时间：
2008-01-21
期刊：
影响因子：
3.8
通讯作者：
Piche, M.
中科院分区：
文献类型：
--
作者：
Grunwald, R.;Bock, M.;Piche, M.
研究了截断超短脉冲贝塞尔-高斯光束的空间-光谱和时空传输及强度传输。扩展针形聚焦区产生使用一个紧凑的设置与反射小角度轴棱锥和自切趾截断由一个适应的光圈。利用高阶统计矩分析了贝塞尔-高斯光束的谱图。与聚焦脉冲高斯光束相比，其光谱相关的传播，超宽带空间光谱传递函数被检测到超过10厘米的瑞利范围。这些结果表明，良好的伪无衍射特性，不仅从空间传播的角度来看，而且相对于光谱和时间的稳定性。(c)2008年美国光学学会。
Spatio-spectral and spatio-temporal transfer and intensity propagation of truncated ultrashort-pulsed Bessel-Gauss beams were investigated. Extended needle-shaped focal zones were generated using a compact setup with a reflective small-angle axicon and self-apodized truncation by an adapted aperture. Spectral maps of Bessel-Gauss beams were analyzed on the basis of higher order statistical moments. Compared to focused pulsed Gaussian beams with their spectrally dependent propagation, an ultrabroadband spatio-spectral transfer function was detected over Rayleigh ranges exceeding 10 cm. These results indicate favorable pseudo-nondiffracting characteristics not only from the point of view of spatial propagation but also with respect to the spectral and temporal stability. (c) 2008 Optical Society of America.