Properties of ultrafast speckle fields in Fresnel diffraction region

被引：0

作者：

Song, Hongsheng ^{[1
]}

Liu, Guiyuan ^{[1
]}

Qin, Xifeng ^{[1
]}

Zhang, Ningyu ^{[1
]}

Cheng, Chuanfu ^{[2
]}

机构：

[1] School of Science, Shandong Jianzhu University, Jinan

[2] College of Physics and Electronics, Shandong Normal University, Jinan

来源：

Guangxue Xuebao/Acta Optica Sinica | 2013年 / 33卷 / 09期

关键词：

Scattering; Statistical property; Ultrafast optics; Ultrafast speckle;

D O I：

10.3788/AOS201333.0932001

中图分类号：

学科分类号：

摘要：

The studies of the speckle field are extended to the area of ultrafast laser, and the concept of ultrafast speckles is introduced. In the theoretical research, the ultrafast speckle fields in the Fresnel diffraction region and the general expressions of their autocorrelation functions are discussed, and then the speckle intensity autocorrelation function is solved using the optical field autocorrelation and the intensity ensemble average. As time delays, ultrafast speckle intensity space autocorrelation curves present a characteristic of periodic oscillation and the frequency gradually increases. Combined with the computer simulation, the formation and the never-before understood dynamic behaviors of the ultrafast speckles in the Fresnel diffraction region are found and explained. Such dynamic behaviors include the increased speckle grains, the structures of the interference fringes in the speckle grains and the decrease of the spatial period, and the interference fringes gradually disappearing from two sides to the center of the observation plane, etc.

引用

共 23 条

[1]

Kempe M., Rudolph W., Analysis of confocal microscopy under ultrashort light-pulse illumination, J Opt Soc Am A, 10, 2, pp. 240-245, (1993)

[2]

Hell S.W., Hannien P.E., Salo J., Et al., Pulsed and CW confocal microscopy: A comparison of resolution and contrast, Opt Commun, 113, 1, pp. 144-152, (1994)

[3]

Gu M., Confocal imaging of thin and line objects under ultrashort laser-pulse illumination, Optic, 101, 3, pp. 118-122, (1996)

[4]

Cooper J., Marx E., Free-space propagation of ultrashort light pulses, J Opt Soc Am A, 2, 10, pp. 1711-1720, (1985)

[5]

Ziolkowski R.W., Judkins J.B., Propagation characteristics of ultrawide-bandwidth pulsed Gaussian beams, J Opt Soc Am A, 9, 11, pp. 2021-2030, (1992)

[6]

Wang Z., Zhang Z., Xu Z., Et al., Spectral and temporal properties of ultrashort light pulse in the far zone, Opt Commun, 123, 1, pp. 5-10, (1996)

[7]

Lefrancois M., Pereira S.F., Time evolution of the diffraction pattern of an ultrashort laser pulse, Opt Express, 11, 10, pp. 1114-1122, (2003)

[8]

Jiang Z.P., Jacquemin R., Eberhardt W., Time dependence of Fresnel diffraction of ultrashort laser pulses by a circular aperture, Appl Opt, 36, 19, pp. 4358-4361, (1997)

[9]

Gu M., Gan X.S., Fresnel diffraction by circular and serrated apertures illuminated with an ultrashort pulsed-laser beam, J Opt Soc Am A, 13, 4, pp. 771-778, (1996)

[10]

Gu M., Gan X.S., Effect of an ultrashort pulse on Fresnel diffraction by a circular opaque disk, Opt Commun, 125, 1, pp. 1-4, (1996)

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