New optical systems for holographic recordings of aberration-corrected diffraction gratings

2001 ◽  
Author(s):  
Elena A. Sokolova
Keyword(s):  
Diffraction Gratings ◽  
Optical Systems ◽  
Aberration Corrected

Aberration Corrected Holographically Recorded Diffraction Gratings

1981 ◽  
Author(s):  
J. M. Lerner ◽  
J. Flamand ◽  
J. P. Laude ◽  
G. Passereau ◽  
A. Thevenon
Keyword(s):  
Diffraction Gratings ◽  
Aberration Corrected

Chromatic aberration corrected switchable optical systems

2018 ◽  
Author(s):  
Nelson V. Tabirian ◽  
Zhi Liao ◽  
Jeoungyeon Hwang ◽  
David Roberts ◽  
Brian Kimball ◽  
...  
Keyword(s):  
Chromatic Aberration ◽  
Optical Systems ◽  
Aberration Corrected

scholarly journals Aberration corrected STEM by means of diffraction gratings

2017 ◽  
Vol 182 ◽  
pp. 36-43 ◽  
Author(s):  
Martin Linck ◽  
Peter A. Ercius ◽  
Jordan S. Pierce ◽  
Benjamin J. McMorran
Keyword(s):  
Diffraction Gratings ◽  
Aberration Corrected Stem ◽  
Aberration Corrected

The Principles Of Aberration-Corrected Optical Systems

1986 ◽  
Author(s):  
Richard G. Bingham ◽  
Michael J. Kidger
Keyword(s):  
Optical Systems ◽  
Aberration Corrected

scholarly journals Aberration-Corrected STEM by Means of Diffraction Gratings

2014 ◽  
Vol 20 (S3) ◽  
pp. 946-947 ◽  
Author(s):  
Martin Linck ◽  
Benjamin McMorran ◽  
Jordan Pierce ◽  
Peter Ercius
Keyword(s):  
Diffraction Gratings ◽  
Aberration Corrected Stem ◽  
Aberration Corrected

scholarly journals Design method for freeform optical systems containing diffraction gratings

2018 ◽  
Vol 26 (16) ◽  
pp. 20792 ◽  
Author(s):  
Benqi Zhang ◽  
Guofan Jin ◽  
Jun Zhu
Keyword(s):  
Design Method ◽  
Diffraction Gratings ◽  
Optical Systems

Atomic Resolution in Crystal Aperture Stem

1990 ◽  
Vol 48 (1) ◽  
pp. 236-237
Author(s):  
J T Fourie
Keyword(s):  
Optical System ◽  
Spherical Aberration ◽  
Three Dimensional ◽  
Transmission Function ◽  
Optical Systems ◽  
Bragg Angle ◽  
Electron Optical System ◽  
Intimate Contact ◽  
Diffraction Effects ◽  
Design Aspect

The attempts at improvement of electron optical systems to date, have largely been directed towards the design aspect of magnetic lenses and towards the establishment of ideal lens combinations. In the present work the emphasis has been placed on the utilization of a unique three-dimensional crystal objective aperture within a standard electron optical system with the aim to reduce the spherical aberration without introducing diffraction effects. A brief summary of this work together with a description of results obtained recently, will be given.The concept of utilizing a crystal as aperture in an electron optical system was introduced by Fourie who employed a {111} crystal foil as a collector aperture, by mounting the sample directly on top of the foil and in intimate contact with the foil. In the present work the sample was mounted on the bottom of the foil so that the crystal would function as an objective or probe forming aperture. The transmission function of such a crystal aperture depends on the thickness, t, and the orientation of the foil. The expression for calculating the transmission function was derived by Hashimoto, Howie and Whelan on the basis of the electron equivalent of the Borrmann anomalous absorption effect in crystals. In Fig. 1 the functions for a g220 diffraction vector and t = 0.53 and 1.0 μm are shown. Here n= Θ‒ΘB, where Θ is the angle between the incident ray and the (hkl) planes, and ΘB is the Bragg angle.

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