@article{oai:nagoya.repo.nii.ac.jp:00010173,
 author = {Mano, A. and Yamamoto, N. and Tamagaki, K. and Okumi, S. and Yamamoto, M. and Kuwahara, M. and Sakai, R. and Monno, T. and Utsu, A. and Nakanishi, T. and Ohshima, T.},
 issue = {1},
 journal = {AIP Conference Proceedings},
 month = {},
 note = {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.},
 pages = {1081--1084},
 title = {Laser Focusing System for High Brightness Polarized Electron Source for SPLEEM},
 volume = {915},
 year = {2007}
}