2024-03-29T05:11:05Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00010173
2023-01-16T03:55:56Z
336:695:696
Laser Focusing System for High Brightness Polarized Electron Source for SPLEEM
Mano, A.
Yamamoto, N.
Tamagaki, K.
Okumi, S.
Yamamoto, M.
Kuwahara, M.
Sakai, R.
Monno, T.
Utsu, A.
Nakanishi, T.
Ohshima, T.
open access
Copyright (2007) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
high brightness
polarized electron source
laser focus
For construction of a high brightness polarized electron source for SPLEEM (Spin Polarized Low Energy Electronic Microscope), a new transmission type photocathode has been developed at Nagoya Univ. In our scheme, a laser light is injected from backside of the photocathode and an electron beam is emitted forward from the surface. A high numerical aperture lens with a short focal length can focus the laser lights into a small spot of photocathode. A laser spot with a diameter of 2.2μm could be achieved by our laser system, and it contributed to realize the high beam brightness of 10^5A·cm^{-2}·sr^{-1} or more for a total current of 5μA.
American Institite of Physics
2007
eng
journal article
VoR
http://hdl.handle.net/2237/11991
https://nagoya.repo.nii.ac.jp/records/10173
https://doi.org/10.1063/1.2750957
0094-243X
AIP Conference Proceedings
915
1
1081
1084
https://nagoya.repo.nii.ac.jp/record/10173/files/25483992.pdf
application/pdf
253.8 kB
2018-02-20