Aberration correction by electron holography using a liquid crystal spatial-light modulator

Jun Chen; Guanming Lai; Kazuo Ishizuka; Akira Tonomura

doi:10.1117/12.155730

3 September 1993 Aberration correction by electron holography using a liquid crystal spatial-light modulator

Jun Chen, Guanming Lai, Kazuo Ishizuka, Akira Tonomura

Proceedings Volume 1889, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine III; (1993) https://doi.org/10.1117/12.155730
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Electron holography has a potential to overcome the resolution limitation of transmission electron microscopes imposed by a spherical aberration of an electron objective lens. This paper describes a new optical system a liquid-crystal spatial-light modulator (LC-SLM) to correct a spherical aberration from an off-axis electron hologram. The effective refractive index of the liquid crystals changed by the applied electric field can flexibly compensate for a wave aberration. Some experimental results involving the correction of the spherical aberration in an off-axis image electron hologram are presented. Zernike phase contrast method is also realized by the LC-SLM to visualize the phase distribution of a corrected object wave.

Citation Download Citation

Jun Chen, Guanming Lai, Kazuo Ishizuka, and Akira Tonomura "Aberration correction by electron holography using a liquid crystal spatial-light modulator", Proc. SPIE 1889, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine III, (3 September 1993); https://doi.org/10.1117/12.155730

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available