Reduction of speckle noise in multiwavelength contouring

被引：24

作者：

Falldorf, Claas ^{[1
]}

Huferath-von Luepke, Silke ^{[1
]}

von Kopylow, Christoph ^{[1
]}

Bergmann, Ralf B. ^{[1
]}

机构：

[1] Bremer Inst Angew Strahltech, D-28359 Bremen, Germany

来源：

APPLIED OPTICS | 2012年 / 51卷 / 34期

关键词：

RECONSTRUCTION; MICROSCOPY; COHERENT; COMPENSATION; CONTRAST;

D O I：

10.1364/AO.51.008211

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a method that can be used to improve the result of multiwavelength contouring in the case of objects with rough surface. It is based on the combined evaluation of multiple measurements with varying direction of illumination. While the individual measurements share the same systematics with respect to the shape of the investigated object, the noise arising from speckle decorrelation fluctuates statistically and hence can be reduced by means of averaging. For the case of three illumination directions we show that weighted averaging of the measured phase distributions enhances the signal-to-noise ratio by approximately 3 dB. (C) 2012 Optical Society of America

引用

页码：8211 / 8215

页数：5

共 17 条

[1] Total aberrations compensation in digital holographic microscopy with a reference conjugated hologram [J].

Colomb, T ;

Kühn, JK ;

Charrière, F ;

Depeursinge, C ;

Marquet, P ;

Aspert, N .

OPTICS EXPRESS, 2006, 14 (10) :4300-4306

[2] Simultaneous amplitude-contrast and quantitative phase-contrast microscopy by numerical reconstruction of Fresnel off-axis holograms [J].

Cuche, E ;

Marquet, P ;

Depeursinge, C .

APPLIED OPTICS, 1999, 38 (34) :6994-7001

[3] Compensation of the inherent wave front curvature in digital holographic coherent microscopy for quantitative phase-contrast imaging [J].

Ferraro, P ;

De Nicola, S ;

Finizio, A ;

Coppola, G ;

Grilli, S ;

Magro, C ;

Pierattini, G .

APPLIED OPTICS, 2003, 42 (11) :1938-1946

[4] SPACE AND WAVELENGTH DEPENDENCE OF SPECKLE INTENSITY [J].

GEORGE, N ;

JAIN, A .

APPLIED PHYSICS, 1974, 4 (03) :201-212

[5]

Goodman J., 1975, LASER SPECKLE RELATE, P9, DOI [DOI 10.1007/978-3-662-43205-1_2, DOI 10.1088/0335-7368/6/1/301]

[6]

Goodman J., 1996, Opt. Eng

[7] CONTOUR GENERATION BY WAVEFRONT RECONSTRUCTION [J].

HAINES, K ;

HILDEBRAND, BP .

PHYSICS LETTERS, 1965, 19 (01) :10-+

[8] Fundamental diffraction limitations in a paraxial 4-f imaging system with coherent and incoherent illumination [J].

Kelly, Damien P. ;

Sheridan, John T. ;

Rhodes, William T. .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2007, 24 (07) :1911-1919

[9]

Schnars U., 2005, DIGITAL HOLOGRAPHY

[10] The determination of material parameters of microcomponents using digital holography [J].

Seebacher, S ;

Osten, W ;

Baumbach, T ;

Jüptner, W .

OPTICS AND LASERS IN ENGINEERING, 2001, 36 (02) :103-126

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