中国激光, 2008, 35 (12): 2011, 网络出版: 2008-12-17   

色散介质中超短脉冲厄米-高斯光束在相位奇点附近的光谱异常特性

Anomalous Spectral Properties of an Ultrashort Pulsed Hermite-Gaussian Beams in Dispersive Media
作者单位
西南石油大学理学院, 四川 成都 610500
摘要
基于索末菲(Sommerfeld)衍射积分公式,对色散介质中超短脉冲厄米-高斯光束在相位奇点附近的光谱异常行为进行了研究,并与真空中的光谱异常行为进行了比较。结果表明,超短脉冲厄米-高斯光束的轴上光谱蓝移,蓝移大小与群速度及脉冲宽度有关,而与群速度色散无关。色散介质中的相对光谱移动略小于真空中的相对光谱移动,脉冲宽度越大,相对光谱移动越小。光谱开关的位置与横向距离、传输介质和厄米函数阶数m, n有关,而与脉冲宽度无关。光谱开关的横向距离小于真空中的相应阶的光谱开关的横向距离,并且随光谱开关的阶数增加,真空和色散介质的相对光谱移动均缓慢减小。
Abstract
Based on the Sommerfeld diffraction integral, the anomalous spectral properties of an ultrashort pulsed Hermite-Gaussian beams propagating in dispersive media are studied , and its comparisons with anomalous spectral behaviors in free space are analyzed. It is found that the on-axis spectrum blueshift of ultrashort pulsed Hermite-Gaussian beams is relative to group velocity and pulse duration, but not to group velocity dispersion. The size of relative spectral shift in dispersive media is slightly smaller than that in free space, and the relative spectral shifts decrease with increasing the pulse duration. The location of spectral switching is relative to the transversal distance, transmission media,and the Hermite function indexes m and n, but not to pulse duration. The transversal distance of spectral switching in dispersive media is less than that in free space, the relative spectral shift slowly decreases as the order number of the spectral switching increases.
参考文献

[1] M. S. Soskin ,M. V.Vasnetsov. Singular Optics (Progress in Optics Vol.42) [M] Amsterdam North-Holland, 2001

[2] . Pu, H. Zhang. Spectral shifts and spectral switches of partially coherent light passing through an aperture[J]. Opt. Commun., 1999, 162(1): 57-63.

[3] . T. Foley , E. Wolf. Phenomenon of spectral switches as a new effect in singular optics with polychromatic light[J]. J. Opt. Soc. Am. A, 2002, 19: 2510-2516.

[4] . Pu, S. Nemoto, B. Lü. Effect of spectral correlations on spectral switches in the diffraction of partially coherent light[J]. J. Opt. Soc. Am. A, 2003, 20: 1933-1939.

[5] . Gbur, T. D. Visser, E. Wolf. Anomalous behavior of spectra near phase singularities of focused waves[J]. Phys. Rev. Lett., 2002, 88: 013901.

[6] . Gbur, T. D. Visser, E. Wolf. Singular behavior of the spectrum in the neighborhood of focus[J]. J. Opt. Soc.Am. A, 2002, 19: 1694-1700.

[7] . C. Kandpal, A. S.Vaishya. Experimental observation of the phenomenon of spectral switching for a class of partially coherent light[J]. IEEE J. Quant. Electron., 2002, 38: 336-339.

[8] H. C. Kandpal. Experimental observation of the phenomenon of spectral switch [J]. J. Opt. A: Pure Appl. Opt. 2001, 3: 296~299

[9] 王中阳,张正泉,徐至展. 脉冲光束在均匀色散介质中的传播[J]. 中国激光,1997,A24(8):715~720

    Wang Zhongyang, Zhang Zhengquan, Xu Zhizhan. Exact solution of the pulsed beams propagation in homogeneous dispersive media [J]. Chinese J. Lasers, 1997, A24(8):715~720

[10] 王丽,韩秀友. 高阶群速度色散引起的高斯超短脉冲宽度的展宽和形变[J]. 光学学报,2007, 27(1): 138~142

    Wang Li, Han Xiuyou, Ultra-short Gaussian pulse expansion and deformation by high-order group velocity dispersion [J]. Acta Optica Sinica. 2007, 27(1): 138~142

[11] J. Pu, C. Cai, S. Nemoto. Spectral anomalies in Young’s double-slit interference experiment [J]. Opt. Expess. 2004, 12: 5131~5139

[12] 刘立人. 卫星激光通信.Ⅰ. 链路和终端技术[J]. 中国激光,2007,34(1): 1~18

    Liu Liren. Laser communication in space. Ⅰ. optical link and terminal technology [J]. Chinese J. Lasers, 2007, 34(1): 1~18

[13] 杨振军,胡巍,郑一周. 超短脉冲复宗量厄米高斯光束[J].光学学报,2004,24(11): 1571~1576

    Yang Zhengjun, Hu Wei, Zheng Yizhou. The ultrashort pulsed elegant Hermite-Gaussian beams [J]. Acta Optica Sinica. 2004, 24(11): 1571~1576

[14] . P. Agrawal. Far-field diffraction of pulsed optical beams in dispersive media[J]. Opt. Commun., 1999, 167: 15-22.

[15] M. Born , E. Wolf. Principles of Optics [M]. Ed. Seventh, Cambridge University Press, 1999. 512~516

[16] 邹其徽,吕百达. 啁啾脉冲高斯光束在自由空间的传输[J]. 中国激光,2006,33(4): 499~503

    Zou Qihui. Lü Baida. Propagation of ultrashort chirped pulsed Gaussian beams in free space [J]. Chinese J. Lasers, 2006, 33(4): 499~503

[17] . P. Agrawal. Spectrum-induced changes in diffraction of pulsed optical beams.[J]. Opt. Commun., 1998, 157: 52-56.

邹其徽. 色散介质中超短脉冲厄米-高斯光束在相位奇点附近的光谱异常特性[J]. 中国激光, 2008, 35(12): 2011. Zou Qihui. Anomalous Spectral Properties of an Ultrashort Pulsed Hermite-Gaussian Beams in Dispersive Media[J]. Chinese Journal of Lasers, 2008, 35(12): 2011.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!