DIGITAL EXTRACTION OF THE MAGNETIC-FLUX DISTRIBUTION FROM AN ELECTRON INTERFEROGRAM

被引：15

作者：

RU, Q

MATSUDA, T

FUKUHARA, A

TONOMURA, A

机构：

[1] Tonomura Electron Wavefront Project, Research Development Corporation of Japan, C/O Advanced Research Laboratory, Hitachi, Ltd., Hatoyama, Saitama

[2] Advanced Research Laboratory, Hitachi, Ltd., Hatoyama, Saitama

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1991年 / 8卷 / 11期

关键词：

D O I：

10.1364/JOSAA.8.001739

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A phase-fitting method is proposed for correctly extracting the magnetic-flux distribution from a low-quality electron interferogram. The method is based on the use of the property nabla x B = 0, which static magnetic-flux density B in vacuum must satisfy. It is derived from the property that the electron-wave phase distribution caused by magnetic fields satisfies the harmonic condition nabla 2-phi(x, y) = 0 but most of phase errors do not. A series of harmonic polynomial expressions is given and is used to fit the noisy phase data. The performance of the proposed method is shown by practical experiments.

引用

页码：1739 / 1745

页数：7

共 9 条

[1] THEORETICAL CONSIDERATIONS CONCERNING QUANTIZED MAGNETIC FLUX IN SUPERCONDUCTING CYLINDERS [J].

BYERS, N ;

YANG, CN .

PHYSICAL REVIEW LETTERS, 1961, 7 (02) :46-&

[2] MAGNETIC-FIELD OBSERVATION OF A SINGLE FLUX QUANTUM BY ELECTRON-HOLOGRAPHIC INTERFEROMETRY [J].

MATSUDA, T ;

HASEGAWA, S ;

IGARASHI, M ;

KOBAYASHI, T ;

NAITO, M ;

KAJIYAMA, H ;

ENDO, J ;

OSAKABE, N ;

TONOMURA, A ;

AOKI, R .

PHYSICAL REVIEW LETTERS, 1989, 62 (21) :2519-2522

[3] COMPUTER RECONSTRUCTION FROM ELECTRON HOLOGRAMS AND OBSERVATION OF FLUXON DYNAMICS [J].

MATSUDA, T ;

FUKUHARA, A ;

YOSHIDA, T ;

HASEGAWA, S ;

TONOMURA, A ;

RU, Q .

PHYSICAL REVIEW LETTERS, 1991, 66 (04) :457-460

[4] BEOBACHTUNGEN UND MESSUNGEN AN BIPRISMA-INTERFERENZEN MIT ELEKTRONENWELLEN [J].

MOLLENSTEDT, G ;

DUKER, H .

ZEITSCHRIFT FUR PHYSIK, 1956, 145 (03) :377-397

[5] OBSERVATION OF RECORDED MAGNETIZATION PATTERN BY ELECTRON HOLOGRAPHY [J].

OSAKABE, N ;

YOSHIDA, K ;

HORIUCHI, Y ;

MATSUDA, T ;

TANABE, H ;

OKUWAKI, T ;

ENDO, J ;

FUJIWARA, H ;

TONOMURA, A .

APPLIED PHYSICS LETTERS, 1983, 42 (08) :746-748

[6] COMPUTER-BASED HIGHLY SENSITIVE ELECTRON-WAVE INTERFEROMETRY [J].

TAKEDA, M ;

RU, QS .

APPLIED OPTICS, 1985, 24 (18) :3068-3071

[7] FOURIER-TRANSFORM METHOD OF FRINGE-PATTERN ANALYSIS FOR COMPUTER-BASED TOPOGRAPHY AND INTERFEROMETRY [J].

TAKEDA, M ;

INA, H ;

KOBAYASHI, S .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1982, 72 (01) :156-160

[8] OBSERVATION OF AHARONOV-BOHM EFFECT BY ELECTRON HOLOGRAPHY [J].

TONOMURA, A ;

MATSUDA, T ;

SUZUKI, R ;

FUKUHARA, A ;

OSAKABE, N ;

UMEZAKI, H ;

ENDO, J ;

SHINAGAWA, K ;

SUGITA, Y ;

FUJIWARA, H .

PHYSICAL REVIEW LETTERS, 1982, 48 (21) :1443-1446

[9]

TONOMURA A, 1987, REV MOD PHYS, V59, P637

← 1 →