Improvement of the accuracy of phase observation by modification of phase-shifting electron holography.
We found that the accuracy of the phase observation in phase-shifting electron holography is strongly restricted by time variations of mean intensity and contrast of the holograms. A modified method was developed for correcting these variations. Experimental results demonstrated that the modification enabled us to acquire a large number of holograms, and as a result, the accuracy of the phase observation has been improved by a factor of 5.
Advanced Science Institute, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
Takahiro
T
Suzuki
Shinji
S
Aizawa
Toshiaki
T
Tanigaki
Keishin
K
Ota
Tsuyoshi
T
Matsuda
Akira
A
Tonomura
D000465:Algorithms; D004583:Electrons; D006696:Holography / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D046529:Microscopy, Electron, Transmission; D013048:Specimen Handling; D014618:Vacuum